There are situations in the life that can cause surprise from any, even if the most famous skeptics. This material can be called a real sensation in recent years. The news is as follows: Intel has released a dual-core Pentium D of the lower price level. But after small modifications, this processor is able to bypass even top models.

This includes even Athlon FX-60 and Pentium Extreme Edition 965. Yes, we already feel the whole bitterness of the disappointment of those users who invested in the top computer systems. But let's get acquainted with our today's hero: Pentium D 805 processor at 2.66 GHz with two cores and 64-bit support. And this processor is very cheap: it is possible to buy it somewhere for $ 130. When we received the first performance results, there was no limit to surprise: the processor easily operates at 4.1 GHz, and with conventional air-cooled.

If you remember the story, then successful examples of overclocking "cheap and angrid" met before. Take the same Intel Celeron 300A, which at a regular frequency of 300 MHz easily worked for 450 MHz. At the same time in some tasks, he began to bypass much more expensive Pentium II 400.

Where is it cheaper? Intel Pentium D 805 for $ 130.

Pentium d 805 At first glance, seems to be an ordinary inexpensive processor, but after overclocking up to 4.1 GHz, the situation changes dramatically. Overclockers, who have recently admired AMD Opteron 144, appeared a new overclocking leader: Pentium D 805. At the same time, the Intel processor accelerates the processor is not only easier, but more efficient. It is connected with duid architecture, because Opteron has only one kernel.

And so Pentium D 805 looks like a "Device Manager".

Pentium D 805 in detail

Pentium d 805 uses two cores of the first generation Pentium D, namely: smithfield. The preceding models in the 8xx ruler operated on clock frequencies from 2.8 GHz (D 820) to 3.2 GHz (D 840). Both kernels in the line are equipped with 1 MB of Cache L2, while the processors of the 9xx cache line processors have increased to 2 MB to the kernel. Over the past year, Intel has not released new models in the 8xx lineup, since the company switched to the 90-nm technical process on 65-nm. And the new technical process is used only for the production of the 9xx line. However, in May, the old SMITHFIELD core received a new reincarnation in Pentium D 805.

View bottom Pentium D 805 for Socket 775.

CPU	Code number	Clock frequency	Cache L2.	Factor	Frequency FSB.
Pentium EE	965	Two nuclei, 3724 MHz	2 MB	14X.	266 MHz QDr.
Pentium EE	955	Two nuclei, 3466 MHz	2 MB	13X.	266 MHz QDr.
Pentium D.	950	Two nuclei, 3400 MHz	2 MB	17x	200 MHz QDr.
Pentium D.	940	Two nuclei, 3200 MHz	2 MB	16x	200 MHz QDr.
Pentium D.	930	Two nuclei, 3000 MHz	2 MB	15x	200 MHz QDr.
Pentium D.	920	Two nuclei, 2800 MHz	2 MB	14X.	200 MHz QDr.
Pentium 4 "E"	661	One nucleus, 3600 MHz	2 MB	18x	200 MHz QDr.
Pentium 4 "E"	651	One nucleus, 3400 MHz	2 MB	17x	200 MHz QDr.
Pentium 4 "E"	641	One nucleus, 3200 MHz	2 MB	16x	200 MHz QDr.
Pentium 4 "E"	631	One nucleus, 3000 MHz	2 MB	15x	200 MHz QDr.
Pentium EE	840	Two nuclei, 3200 MHz	1 MB	16x	200 MHz QDr.
Pentium D.	840	Two nuclei, 3200 MHz	1 MB	16x	200 MHz QDr.
Pentium D.	830	Two nuclei, 3000 MHz	1 MB	15x	200 MHz QDr.
Pentium D.	820	Two nuclei, 2800 MHz	1 MB	14X.	200 MHz QDr.
Pentium D.	805	Two nuclei, 2666 MHz	1 MB	20X.	133 MHz QDr.

If you compare D 805 with other processors, the frequency of 2.66 GHz looks not too attractive. Yes, and 133-MHz (533 qdr) the tire seems just ridiculous compared to 200 and 266 MHz in other processors.

Frequency FSB.	Bandwidth
266 MHz (1066 QDR)	8.53 GB / s
200 MHz (800 QDR)	6.40 GB / s
133 MHz (533 QDR)	4.20 GB / s

Without any modifications, the exchange rate between Pentium D 805 and the northern chipset bridge more than twice as slower than 266 MHz in top processors.

The secret of the multiplier

The multiplier shows the processor frequency ratio to the FSB frequency. For Pentium D 805, it is 20x. Compared to other processors using a tire of 200 or 266 MHz, the multiplier is very high. Multiplers are much more common. But the high multiplier leads to the fact that Pentium D 805 is a good candidate for overclocking. You can simply increase the FSB frequency to 200 MHz, after which the clock frequency of the processor will grow to 4.0 GHz (200 MHz x 20).

In the following table, you can view the factors of all Intel desktop processors since the times of Socket 5 (1993).

Extreme Edition 965 processor multiplier can be set in BIOS at any level from 12x to 60x, but for the unlocked multiplier will have to pay. This processor costs about $ 1,000, which can be spent not every user. That is why overclocking less high-speed processors is so popular today.

The multiplier 20x is toughly stitch in the processor. It cannot be changed in neither BIOS, nor with the help of jumpers of the motherboard.

The Pentium D 805 multiplier is fixed, therefore there is only one way to overclock the processor: an increase in the clock frequency FSB.

FSB 133 MHz: perfect option for overclocking

Our project of overclocking Pentium D 805 has begun from the standard clock frequency FSB 133 MHz (533 QDR).

The clock frequency of FSB can be easily changed in the BIOS. Here is an example on the Maternal Asus motherboard.

Using the motherboard manufacturer utility, you can even change the FSB frequency directly under Windows. The illustration shows the EasyTune 5 utility from Gigabyte.

The following table shows the possible FSB frequencies and the corresponding processor frequencies with a multiplier 20x.

Pentium d 805 with a multiplier 20x
Frequency FSB.	Frequency CPU.
133 MHz (regular)	2.66 GHz
140 MHz	2.80 GHz.
150 MHz	3.00 GHz
160 MHz	3.20 GHz
166 MHz	3.33 GHz
170 MHz	3.40 GHz
180 MHz	3.60 GHz
190 MHz	3.80 GHz
200 MHz	4.00 GHz.
205 MHz	4.10 GHz
210 MHz (THG frequency)	4.20 GHz
215 MHz (maximum frequency at which the system loaded)	4.30 GHz

At first glance, the acceleration of so cheap processor up to 4.1 GHz seems incredible. But in any case, the numbers do not lie. And if you carefully look at the preceding models, then the reasons for such a strong overclocking will be able to understand.

If you closely look at the 805 kernel, then we will find a stepping B0. The first processors in the 8xx ruler were made with old stepping A0.

According to the functions of energy saving or sets of instructions, there is no significant differences between stepping, but the stepping B0 certainly suggests that Pentium D 805 belongs to the second generation of Pentium D 8xx processors. The updated stepping stepping is usually distinguished by further optimizations of layout of elements on a crystal, process improvements, refinement of design and edits of various errors. In any case, the stepping B0 works better than the old version A0. Since the first versions of 8xx processors were distinguished by the maximum clock frequency of 3.2 GHz, it was safely believed to assume that the stepping B0 could disperse them at least up to 3.2 GHz. That is what we believed, starting the tests of overclocking Pentium D 805.

CPU	Clock frequency	Stepping	Spec number
Pentium d 840.	3.20 GHz	A0.	SL88R.
Pentium d 830.	3.00 GHz	A0.	SL88S.
Pentium d 820.	2.80 GHz.	A0.	SL88T.
Pentium d 840.	3.20 GHz	B0.	SL8CM.
Pentium d 830.	3.00 GHz	B0.	SL8CN.
Pentium d 820.	2.80 GHz.	B0.	SL8CP.
Pentium d 805.	2.66 GHz	B0.	SL8zh

To distinguish processors among themselves, each model carries a special number. It is called SPEC, and examples of numbers are shown in the table above. These numbers are applied both to the processor itself and on the box outside.

The last five characters of the product code, which is located on the right side of the box with the processor, are just refer to the SPEC number.

You can easily buy a Pentium D 805 processor with a stepping B0 and the SPEC SL8ZH number identical to what we used in our article. And, of course, there is no 100% guarantee that you will be able to get the same clock frequencies as in our case.

In order to warn the sale of counterfeit or modified processors, Intel has created a special packaging on which the processor specifications are clearly noticeable through a transparent plastic window. Thanks to it, the buyer can easily drain the number on the processor with the number on the box, without even checking out.

The following table presents the Pentium processors for Socket 775 with core titles and model numbers.

Overview of processors for Socket 775
CPU name	Model number	Code name nucleus	Stepping	TechProcess
Pentium EE	965	Presler	C1.	65 Nm
Pentium EE	955	Presler	B1.	65 Nm
Pentium D.	Rule 900.	Presler	B1.	65 Nm
Pentium 4.	6x1 line	Cedar Mill.	B1.	65 Nm
Pentium EE	840	Smithfield.	A0.	90 nm
Pentium D.	Line 800.	Smithfield.	B0.	90 nm
Pentium D.	Line 800.	Smithfield.	A0.	90 nm
Pentium EE	3.72 GHz	Prescott 2m.	N0.	90 nm
Pentium 4.	6x0 line	Prescott 2m.	N0.	90 nm
Pentium 4.	5x1 line	Prescott.	D0, E0	90 nm
Pentium 4.	Rule 5x0J.	Prescott.	D0, E0	90 nm
Pentium 4.	Rule 5x0.	Prescott.	D0, E0	90 nm
Pentium EE	3.46 GHz	Gallatin.	M0.	130 nm
Pentium EE	3.40 GHz	Gallatin.	M0.	130 nm

Three reasons for the appearance of Pentium D 805

Now there is a logical question: why did INTEL decide to release a similar processor to the market? We have three possible explanations. The first: 65-nm production technology works better than Intel assumed, which allows you to issue a wider range of products. To empty warehouses 90-nm processors and avoid financial losses, products based on old technologies should be attractive to buyers. You can reset the clock frequencies and prices to quickly sell 90-nm processors.

The second possible reason: the processor was released consciously in order to take away the overclocked processors from AMD. AMD has already sufficiently sufficiently off Opteron 144 with a low clock frequency, which occupies about the same price position and provides good overclocking potential.

Finally, the third assumption: Pentium D 805 is a regular OEM processor, which very well received excellent specifications, ensuring the excellent overclocking potential.

In the end, it is not so important which of the reasons expressed correctly. The consumer wins in any case!

Ideal conditions for overclocking

It is time to distinguish four key elements that allow the processor to show a good overclocking potential.

• Low FSB Tire Frequencythat allows you to overclock the processor by the method of its increase.
• High multiplierwhich allows the processor to achieve high clock frequencies.
• Improved version of the crystal (stepping).
• Low price Compared to top processors, which justifies efforts to carry out overclocking.

What memory comes best?

Pentium D 805 works in normal mode with FSB 133 MHz (533 QDR). Therefore, due to the design of the chipset, we obtain the maximum frequency DDR2-533. But the processor bus acceleration also leads to an increase in the memory frequency. It can be calculated by taking FSB frequency and memory bus factor. Usually on the Intel platforms, the multiplier varies from 2.0 to 4.0. Since our acceleration began with very low FSB frequency, certain difficulties can be observed with a memory controller. Namely: for FSB frequencies from 133 MHz to 148 MHz, the only faces of the multiplier are 3.0 and 4.0 - fewer meanings have no meaning.

FSB (MHz)	Factor	Memory
133 - 148	3,00	DDR2-400 to 444.
133 - 148	4,00	DDR2-533 to 592.
149 - 266	2,00	DDR2-298 to 533.
149 - 266	2,66	DDR2-396 to 710.
149 - 266	3,00	DDR2-447 to 800.
149 - 266	3,33	DDR2-496 to 888.
149 - 266	4,00	DDR2-596 to 1066.

We assume that a multiplier 4.0 is set, which raises the memory frequency DDR2-533 for FSB 133 MHz to DDR2-667, when the FSB frequency increases to 166 MHz. If you increase the FSB frequency to 200 MHz, then thus increase the speed of memory to DDR2-800. If you continue to increase the frequency of FSB, then the memory frequency will also be increased.

Some maternal manufacturers do not allow the use of high-speed DDR2-1066 memory. The reason lies in the components they installed on the fee. In order for memory to work at high frequencies, the components must be very high-quality, increasing, in turn, the cost of the motherboard. Yes, and the design of the motherboard also plays its role: the data lines that will work at 500 MHz can be located close to each other, at a distance of 10 cm. Bad design leads to the accumulation of the capacity and the appearance of resonant interference, which negatively affects stability and May lead to the collapse of the system.

At FSB frequencies below 149 MHz, the multipliers of memory below 3.0 are not available, since in terms of performance they do not mean. For example, at a frequency of FSB 133 MHz, a multiplier 2.0 leads to the speed of DDR2-266.

Memory multipliers available in BIOS are changing from one manufacturer to another. Multiplier 4.0 is also not always, so the erroneous choice of motherboard can lead to a drop in performance. In most cases, manufacturers indicate the support of the multiplier 4.0 as "Native DDR2-800."

Right chipset

Choose the right chipset for our project turned out to be very simple: all chipsets that support dual-core processors are supported and the FSB frequency is at least 200 MHz. Of course, Pentium D 805, they also support. We successfully implemented our overclocking project on five motherboards from ASUS and GIGABYTE, the list of which is shown below.

• ASUS P5WD2-E Premium (Intel 975x)
• ASUS P5WD2-WS Premium (Intel 975x)
• ASUS P5WD2 Premium (Intel 955x)
• Gigabyte G1975x Turbo (Intel 975x)
• Gigabyte 8i955x Royal (Intel 955x)

If you want to be exactly sure that your processor will work with the motherboard and the CPU will be able to disperse, carefully examine the list of compatibility from the board manufacturer. We decided to turn to the three largest retail motherboard manufacturers: ASUS, GIGABYTE and MSI. And that's what we found.

At MSI, the situation is not entirely intelligible. Many motherboards have this processor added quite recently. Some is not supported at all.

MSI motherboards problems arise due to the solution of this manufacturer to save prices at a minimum level. Component and compatibility tests passed at a memory frequency of only 200 MHz. So the use of these motherboards at higher speeds can lead to loss of stability.

Acceleration CPU has a reverse side of the medal: heat released due to very high power consumption. Since our Pentium D 805 processor has been created on 90-nm technology and uses duid design, power consumption at frequencies above 4 GHz is already extreme.

In accordance with the "Platform Compatibility Guide", this processor consumes up to 95 W on a standard clock frequency. The designation 05a indicates the PRB0 specification. Of course, this means that the supply cooler is also designed for such a relatively modest, heat dissipation.

"Box" cooler version.

At the standard clock frequency of 2.66 GHz Intel indicates the maximum power consumption / heat dissipation of 95 W. If you call on mathematics to help, then on 4 GHz we obtain the theoretical level of heat dissipation of 142 W.

According to the same specifications, the processor can be powered by voltage in the range of 1.2-1.4 V. The voltage level may vary from one processor to another: it is written to the chip ROM and is not specified on the package or in the SPEC number.

The lower the standard voltage of the processor, the lower the power consumption and the smaller the requirements for the cooling system will be.

A smaller processor supply voltage usually indicates a better crystal. Transistors for switching requires less voltage, which increases the chances of obtaining high clock frequencies.

In the processor bought, the rated voltage is 1.3375 V.

If you want to get the same overclocking results as we (or even even higher frequency), the voltage level of your Pentium D 805 should be the same or even lower.

Power growth over 200 W

We measured at different clock frequencies. For the test system, we used the following components:

• Intel Pentium D 805;
• power supply Tagan i-Xeye 480 W;
• ASUS P5WD2-E PREMIUM;
• OCZ DDR2-800 (2x 512 MB);
• 2x Western Digital WD160;
• GeForce 7800 GTX;
• Gigabyte DVD-ROM 16X.

After overclocking Pentium D 805, the power consumption of the system in the mode of inactivity rises by 88 W. This increase is associated with the lifting the voltage required for stable operation.

With a full load (100%) on both processor kernels, the difference in power consumption between the standard clock frequency and overclocked to 4.1 GHz processor becomes simply huge. Performance growth costs an additional 216 watts.

If you look at power consumption in idle mode, our overclocked system looks not so sad. For example, compared to Pentium D 950 by 3.4 GHz, the system after overclocking up to 4.1 GHz consumes only 50 W more.

At maximum load, the difference between Pentium D 950 and 4.1-GHz Pentium D 805 increases to 109 W. Given the difference between them at 700 MHz, the growth seems very reasonable.

We decided to understand which power supply is needed by our system, and for this completely loaded the processor along with the video card. As a result, we got the power consumption of the 512 W system (from the outlet). Very much, but should also take into account the efficiency of the power supply. Most power supplies give the efficiency between 75 and 80 percent, that is, our system consumed about 380 W. So if your power supply is capable of issuing 500 W, you can accelerate without problems.

In order not to overload the voltage stabilizer on the motherboard, it is better to take a model with an 8-phase stabilizer. For this reason, we recommend the Mother's ASUS P5WD2-WS Premium fee for workstations.

Thanks to the 8-phase voltage stabilizer, the ASUS P5WD2-WS board is capable of cope with high power consumption of the processor.

Energy Saving: Speedstep (C1E) is missing

Disconnecting the C1E energy saving function at Pentium D 805, Intel buried any hope of getting a processor close to Intel Pentium Extreme Edition 965 with 266-MHz FSB. So the BIOS cannot include Enhanced Halt State, and the multiplier - to downgrade up to 14x. It is a pity, since the configuration 14 x 266 \u003d 3.73 GHz would look attractive.

To make sure that the results are reliable, we installed the processor into different motherboards from ASUS and GIGABYTE. But neither on the same board with the latest version of the BIOS we could not turn on C1E.

Intel Solution Turn off the C1E function may have two reasons.

• All previous desktop processors with C1E function could not reduce the clock frequency below 2.8 GHz. In the case of Pentium D 805, the regular clock frequency of 2.66 GHz is already below this threshold. The C1E function would reduce the frequency to 1.86 GHz, which is not typical for Intel desktop processors.
• Intel perfectly imagines a good potential of the acceleration chip, after which it is able to give up about the same performance as the high-speed extreme edition, which is more than $ 1000. Thanks to C1E, we could get the same clock frequency as Intel Pentium EE 965 (14 x 266). However, Pentium D 805 is twice as smaller L2 cache and does not support Hyper-Threading technology.

Since the C1E function is missing, the processor does not support and SpeedStep. The fact is that these two functions depend on each other.

Energy saving functions
CPU		Version	C1E.	EIST.	TM1	TM2.
Pentium EE	965	C1.	X.		X.
Pentium EE	955	B1.			X.
Pentium D.	Rule 900.	B1.	X.		X.
Pentium 4.	6x1 line	B1.	X.		X.
Pentium EE	840	A0.	X.			X.
Pentium D.	805	B0.				X.
Pentium D.	Line 800.	B0.	X.	X.		X.
Pentium D.	Line 800.	A0.	X.	X.		X.
Pentium EE	3.72 GHz	N0.				X.
Pentium 4.	6x0 line	N0.	X.	X.		X.
Pentium 4.	5x1 line	D0, E0	X.		X.
Pentium 4.	Rule 5x0J.	D0, E0	X.		X.
Pentium 4.	Rule 5x0.	D0, E0	X.		X.
Pentium EE	3.46 GHz	M0.			X.
Pentium EE	3.40 GHz	M0.			X.
			Saving energy		Protection

Overclocking without risk, including overheating protection

The Pentium D processor supports the second version of Intel Thermal Monitor, a protective mechanism that allows the system to continue to work without damage to the processor. Thermal Monitoring technology appeared in Pentium 4 processors (Willamette) in 2000. If the processor temperature exceeds a specific threshold, the clock generator automatically turns on trottling. In this case, energy consumption (and heat dissipation) is significantly reduced, but the performance also falls noticeably.

The updated version of Thermal Monitoring 2 turned out to be smarter: the clock generator no longer misses the tact, but reduces the clock frequency of the processor. The system includes a progot signal in which the processor works flawlessly, albeit on a reduced clock frequency. Since the activation of ProChot as a protective mechanism Thermal Monitoring 2 occurs in the processor itself, it does not require BIOS updates or any changes to the settings. The above-mentioned ENHANCED HALT MODE C1E technology translates this protection to another step above, capturing and the inactivity mode of the operating system.

Since the technology of Thermal Monitoring 2 provides a kind, overheating protection, thanks to it, the system has become much easier. In addition, if the processor is overheated, TM2 technology will respond much better than in the case of a system protected by Thermal Monitor 1. The second version of Thermal Monitor technology is a kind, bonus for overclockers.

Ready for a 64-bit future

If you look at the functions of the Pentium D 805, then you can immediately understand: we are not an old processor before us.

Processor functions
Name		Version	Number of logical centers	HT	NX.	EM64T.	Vt.
Pentium EE	965	C1.	4	X.	X.	X.	X.
Pentium EE	955	B1.	4	X.	X.	X.	X.
Pentium D.	Rule 900.	B1.	2		X.	X.	X.
Pentium 4.	6x1 line	B1.	2	X.	X.	X.
Pentium EE	840	A0.	4	X.	X.	X.
Pentium D.	805	B0.	2		X.	X.
Pentium D.	Line 800.	B0.	2		X.	X.
Pentium D.	Line 800.	A0.	2		X.	X.
Pentium EE	3.72 GHz	N0.	2	X.	X.	X.
Pentium 4.	6x0 line	N0.	2	X.	X.	X.
Pentium 4.	5x1 line	D0, E0	2	X.	X.	X.
Pentium 4.	Rule 5x0J.	D0, E0	2	X.	X.
Pentium 4.	Rule 5x0.	D0, E0	2	X.
Pentium EE	3.46 GHz	M0.	2	X.
Pentium EE	3.40 GHz	M0.	2	X.

If you compare Pentium D 805 with the most modern processor models, it turns out to be no worse. Indeed, he has support both EM64T (64-bit instructions) and Execute Disable bits (NX). Pentium D 805 is based on a duid architecture, so with Hyper-Threading can be parted without much suffering. The only thing that is missing is Intel Virtualization Technology (VT) virtualization technologies. Actually, the practice of disabling those or other functions in the Intel processors we know.

Thg Disclosure Diary

We start with 2.66 GHz

By default, Pentium D 805 works with a clock frequency of 2.66 GHz. Of course, this frequency is not impressive.

As for the frequency of memory, the choice at FSB 133 MHz is small. We chose DDR2-533.

To maximize performance, we configured the minimum memory delays.

3.33 GHz: Stable system with standard voltage level

At first we decided to raise the frequency FSB from 133 to 166 MHz. To our surprise, the processor earned at the frequency of 3.33 GHz and the standard voltage of 1.3375 V without any problems, even when both cores were completely loaded.

The multiplier 20x leads to the fact that with FSB 166 MHz, the processor frequency is 3.33 GHz. It should be noted that the specified supply voltage of 2.7 V is incorrect.

When choosing FSB 166 MHz memory frequency increases significantly.

The effectiveness of the "box" version of the cooler for this frequency was enough. The system started at a frequency of 3.33 GHz without any problems, and such overclocking led to an increase in energy consumption in the mode of inactivity by 6 W. But if the CPU is loaded and wait for a while, then the system "crashes" due to overheating. The reason is the method of controlling the fan. Intel deliberately limited the noise level in activity, but due to overclocking, the heat dissipation increases by 24 W, and the cooler begin problems. The controller cannot respond properly to such heat generation growth, and the cooler does not cope with cooling.

The "box" version of the cooler copes with the cooling of the processor only on standard frequencies.

Pentium d 805.	"Box" cooler Intel
Clock frequency	Inaction
4.10 GHz	Crash	Crash
4.00 GHz.	Crash	Crash
3.80 GHz	Crash	Crash
3.60 GHz	Crash	Crash
3.32 GHz	Crash	57 ° C.
2.66 GHz	78 ° C.	53 ° C.

We decided to abandon the Intel Boxer Couple and chose the Zalman model. We recommend CNPS9500 - one of the best coolers on the market (see our testing).

3.60 GHz: work without problems

We slowly raised the clock frequencies and exceeded the performance of the Pentium Extreme Edition 840, which works for 3.2 GHz. This processor is sold in retail for about $ 1000, so by choosing Pentium D 805, we saved $ 870. We still did not increase the tension, and the processor in tests worked stable.

In the Pentium EE 840 store you can buy approximately $ 1000.

It is quite clear that EE 840 operates at FSB frequency, which is 20 MHz above, and supports Hyper-Threading technology. But Pentium D 805 works with a clock frequency of 400 MHz above, therefore the performance turns out to be higher.

Overclocking FSB up to 180 MHz improves memory performance. The maximum frequency of memory in our testing was 360 MHz (multiplier 4.0), which gives DDR2-720. Memory capacity compared to the original clock frequency has improved by 35 percent.

Now the power consumption of the entire system has increased significantly. In idle mode, power consumption has grown by 33 W, and the power consumption of the entire system was 204 W. At maximum load, the growth of power consumption was 101 W. Considering that 80% of these 101 W belongs to the processor, the energy consumption of the latter at a frequency of 3.6 GHz doubled to 160 W. We are about 30 W exceeded the maximum thermal package for dual-core processors.

3.8 GHz: I had to increase the supply voltage slightly

We continued to increase the FSB frequency and reached 190 MHz. At such a frequency, we could no longer be able to provide stable operation, so I had to increase the CPU voltage. We raised the voltage in increments of 0.025 in until the processor started to work stably at maximum load. In this case, the goal was achieved at a voltage of 1,500 V, that is, 0.1625 above the standard level.

Of course, the heat dissipation increases as a result of increasing supply voltage, but Zalman cooler was able to cope without any problems with it, while the noise level did not go beyond the reasonable limits. Yes, and set the speed of rotation to the maximum was not yet necessary.

In idle mode, power consumption turned out to be 14 W higher than at a frequency of 3.6 GHz. With full load, power consumption increased by another 36 W - the average power consumption of the processor was about 190 W.

The memory capacity increased in proportion to the processor frequency: now in the BIOS it was possible to select the DDR2-760 frequency, which increases the memory capacity by 7.6 percent.

3.8 GHz is good, but the frequency of 4.0 GHz allows you to bypass the current version of Pentium Extreme Edition 965. For this, the FSB frequency had to be increased to 200 MHz.

So that the system remains stable and by 4.0 GHz, we again had to increase the voltage of the processor. We used the same approach to the gradual increase in the voltage, which is described above. By increasing the voltage of 0.2875 V, we received a stable operation of 4 GHz.

Although the Pentium D 805 processor is equipped with only 1-MB cache L2, the clock frequency CPU by 276 MHz exceeds the top pentium EE 965, equipped with 2 MB of Cache L2. Therefore, 805 overtakes more expensive CPU.

It was at this level that Zalman cooler began to demonstrate signs of excessive load. The maximum fan speed has already been not enough to take a huge amount of heat. The processor overheated and began to include trottling.

The purple schedule clearly shows that the thermal monitor 2 technology interferes with the processor, including trottling. Of course, it does not allow the processor to be overly warm up, but the performance is noticeably declining.

Trottling significantly reduces processor performance. On 4 GHz, the heat dissipation increases again, and now we must be discharged at a maximum load of 195 W, and not the original 80 W.

Pentium d 805.	Cooler Zalman.
Clock frequency	Inaction
4.10 GHz	Crash	52 ° C.
4.00 GHz.	80 ° C.	49 ° C.
3.80 GHz	76 ° C.	47 ° C.
3.60 GHz	74 ° C.	46 ° C.
3.32 GHz	71 ° C.	46 ° C.
2.66 GHz	64 ° C.	44 ° C.

It became quite obvious that for the operation of the system at a frequency of 4 GHz air cooling under any conditions already not enough. We switched to the cooling water system. And everything worked!

With FSB 200 MHz frequency, we can use DDR2-667 memory, as well as DDR2-800.

We spent our tests both with the memory DDR2-667 and with DDR-800.

In some applications, Pentium D 805 has already overtaken Pentium Extreme Edition 965, but we decided not to stop and increased the FSB frequency to 205 MHz. As a result, the processor earned 4.1 GHz.

But for stable operation, the system had to take additional measures. We increased kernel supply voltage by 0.338 V to 1.675 W. The memory frequency was DDR2-820, but we were able to maintain the delays CL4.0-4-4-8.

... But as soon as we restarted the system, I received a flashing message "CPU Overvoltage Error".

Using this message, ASUS informs the user to exceed CPU specifications and the transition to a dangerous voltage level.

It should be noted that our test system for 4.1 GHz without any problems passed through all the tests.

The power consumption of the processor has reached simply inconceivable level due to a significant increase in supply voltage. Compared with the standard frequency at 4.1 GHz, the processor in inactivity consumes 54 W more energy. It is difficult to believe, but at the maximum load of 4.1-GHz, the processor consumes 146 W more. At the same time, the clock frequency increased by 1.44 GHz.

4.3 GHz: Will the system be loaded?

It is quite clear that we tried to find the upper limit of Pentium D 805 capabilities for overclocking. We have successfully downloaded Windows XP on a system with a processor voltage of 1.675 V and a clock frequency of 4.2 GHz. But when we tried to run any application with a load, the system immediately "pulled out".

The Pentium D 805 processor started at 4.3 GHz, but at the same time Windows XP could not boot.

Analysis of test results: who won?

Yes, judging by the results, Intel was able to win the best friend of overclockers at AMD. Opteron 144 not long remained the best processor for overclocking. Today he gave way to Pentium D 805.

If you have time and necessary skills, you can achieve stable operation of Pentium D 805 and at frequencies up to 4.3 GHz. Of course, if you can give the desired voltage and take the accumulating heat.

CPU clock frequency	Memory mode	Memory bandwidth	Increase percentage
2.66 GHz	DDR2-533	8.5 GB / s	Standard
3.33 GHz	DDR2-664.	10.6 GB / s	24,6%
3.60 GHz	DDR2-720	11.5 GB / s	35,1%
3.80 GHz	DDR2-760	12.2 GB / s	42,6%
4.00 GHz.	DDR2-800.	12.8 GB / C	50,1%
4.10 GHz	DDR2-820	13.1 GB / s	54,1%

Conclusion: Double-core processor for 4.1 GHz

It seems incredible, but it is true: the processor for $ 130 after overclocking is capable of increasing the top models from AMD (Athlon 64 FX-60) and Intel (Pentium Extreme Edition 965), each of which costs $ 1,000.

We bought our sample Intel Pentium D 805 in a regular store, after which it was overclocked to 4.1 GHz (compared to the standard clock frequency of 2.66 GHz). The clock frequency increase was about 54%, but additional cooling is still required for extreme frequencies. The secret of overclocking lies in the clock frequency FSB: it should be increased from 133 to 200 MHz. At the same time, the system remains fully stable, since modern motherboards on Intel 9xx chipsets are designed to work with the FSB frequency up to 266 MHz. Pentium D 805 with ease replaces the previous overclocking leader: AMD Opteron 144 processor.

The system after refinement: reinforced Pentium D 805 with ease bypassing flagship processors from AMD and Intel.

More recently, we tested the Intel Pentium EE 965 flagship processor (Extreme Edition), which in retail costs about $ 1100. However, he had to give the performance leadership to our 4.1-GHz processor. The same applies to the Athlon 64 FX-60 processor, which is inferior to 4,1-GHz Pentium D 805 in many tests.

According to the results of our testing, Pentium D with extreme acceleration goes to the first place in terms of performance in almost all tests, including encoding and editing video, sound coding, office applications, photo processing and various 3D games. Pentium D 805 comes forward and in multitasking tests, when several applications are performed in parallel. If you work with complex filters and effects in Adobe Photoshop CS2 or use USE Pinnacle Studio Plus 10 to handle HD video, then the overclocking processor for $ 130 will be the best choice. Even the gamers are dispersed Pentium D 805 suitable as it is impossible.

In conclusion, the possible risks associated with acceleration should be mentioned. Let's start with power consumption: at a frequency of 4.1, the processor consumes 210 W against regular 95 W. At the same time, the current reaches 125 A (!), Which requires the appropriate heat removal from the voltage stabilizer. That is why we recommend buying a high-end cooler. In any case, due to overheating, the processor does not work out: the situation is saved by the technology "Thermal Monitor 2", which includes trottling after reaching a certain temperature threshold. Actually, that is why it is not worth raising the CPU voltage above a reasonable level, that is, above 1.7 V.

If you have already bought a system on Socket 775, then $ 130 per pentium d 805 will justify yourself in any case. If you go to the AMD system, you will have to spend money on a new motherboard (not less than $ 130 for a high-quality model) and 1 GB of high-quality DDR2 memory (not less than $ 100). At the same time, do not forget all the pleasures that you get from the assembly of such a system. AMD fans may have to change their attitude to Intel. But it is worth it.

Hello everyone and so I would say hello, not simple, but from the past, from that moment when the two-core processors of the Pentium D family came to the light (it was a cool time). The model D945 was released in 2006, it was not the topical processor at that time, but it was clearly spinning ..

Pentium D945 is made according to the process of 65 nm (it is good that at least 90 nm), has 2 kernels and cache size is 4 MB (for each 2 MB kernel). 3.4 MHz frequency, TDP 95 watts. The temperature processor temperature in the adequate will only if you put the cooler, all the same it is 95 watts and 65 nm technical process, all this means that the processor is not cold.

What is wondering that percentage of characteristics, as it were, even better than mine. And I have a Pentium G3220 on a socket 1150, and I have only 3 MB cache, and the frequency is only 3 GHz. But of course, in fact, G3220 is much faster than D945, all the same ten years differences. Just many users do not know that some models from the past by parameters are far superior to modern. For example, take the same Q9650 and compare it by parameters with some model Core i3.

What else can I say about Pentium D945? Sorry, unfortunately there are no streams (Hyper-Threading technology), this is what I am in the model D955 or D965 they are. And 2 kernels have respectively 4 streams, in Windows it can be seen as 4 kernels! But these models are certainly hotter, and not so simple to find them, rare it would be so.

Here is a screenshot of the utility CPU-Z with info about D945:

As you can see, here the processor is overclocked up to 4 GHz, it is possible even without the use of water cooling. The main thing is that the radiator is more powerful, well, that is, more important, for example, NOCTUA NH-U12P SE2, Thermalright Silver Arrow IB-E Extrem. Yes, this is certainly not cheap pleasure, you can search and slightly cheaper. But, keep in mind one, these coolers are omnivorous, that is, support both 775th sockets and modern, for example, 1150. And popular AMD sockets support. Although buying such a cooler for Pentium D, as it were, a little bit of it strange ... In general, when choosing a cooler, always look at supported sockets - when changing the platform, you can save on the cooler. Well, I hope you understand

Is it possible to put Windows 10 on Pentium D945? Yes, you can! Here is an example of a screenshot, here also Pentium D, but the model is a little younger - D940:

But as you can see, both kernel are loaded, but do you know what? Multiple tabs in the browser. Yes, sites there would so say multimedia, entertainment, with their simultaneous opening the Pentium D940 processor is completely clogged. But nothing hangs, just a little slows down. In general, it is possible to work and fairly well. In any case, Pentium D is better than the same popular Pentium 4 630 (there is only one kernel). Well, as popular, I mean among old processors

And if you still dispersed D945, then I think that it is still a good for office PC. If you still put SSD, it will be even better! The main minus at D945 I see only in its consumption, it is quite voracious. But on the other hand, the motherboard under this processor is worth a penny. And the processor itself is even cheaper. That is, the motherboard + D945 kit will cost you ... Well, the maximum of dollars 20. I consider it a plus, despite the power consumption. Especially if you consider that the D945 will pull many old games, well, for example NFS MOST WANTED. In short, you can make a gift to some kind of schoolboy ..

And in general. I have been sitting on Pentium 4,670 for a long time, yes, it was not enough for everything, and although this is the most powerful single-core processor. However, I was able to learn the scripting language AUTOIT on it, easily coded, well, I wrote small programs. That is, it is possible, it is not deafness. Although most likely not everyone will agree with me. For me personally, deafness is 370 socket, there are already really hellish brakes, even the Internet does not look, for it hangs everywhere.

By the way, for D945, I recommend using Windows XP, this is the perfect system for this pro. But Windows 7 seems to me, it is better not to put it, all the same it will be a little braked on D945, especially if you consider that it consumes more. By the way, I can advise you a super-fast browser for old computers, I recently opened it for myself and it's just something! It is called Pale Moon (made on the basis of Mozilla), in general, I advise

D945 works on a bus in 800 MHz, that is, nothing special. But the model is a little older, well, D955, D965, then there is a 1066 MHz tire.

In general, all, I hope that you are all clear and this info has been useful to you.

08.08.2016

3000 MHz, cache volume - 32 KB. The supply voltage in this case is 1.2 V. Tekhprotsess at the model takes 65 nm. This processor uses the socket connector. Scattered power of the Pentium D model is at the level of 95 W.

Main functions

The MSI function in this case is provided by the manufacturer. Thus, access to cache memory is provided pretty quickly. Directly architecture to control the parameters of the kernel is applied races. The large amount of intellectual memory allows the system to solve important tasks very quickly. The im-tire in this case is set with a frequency of 5 MHz.

For quick data packets, it is extremely important. Special attention in the processor deserves the "Turbo" function. Due to it, the controller clock frequency is adjusted. With the maximum processor load, the specified parameter decreases automatically.

Performance

If you believe the opinion of experts, then with the performance of the Pentium D processor there is no problems. The multi-core model allows you to solve the most difficult tasks. At once, the system is able to process many instructions. From the platform does not take a lot of time. If we talk about the parameters, the calculated device capacity is at 82 watts. In turn, the base frequency is 3.8 GHz. For processing computing data, it is extremely important. Also, the parameter of the basic frequency in the processor has an impact on the opening speed of transistors.

Specifications of memory modules

By making the Pentium D processor overview, it should be noted that the single-channel memory is supported by them. Directly the code correction code is not taken into account. If you believe the opinions of experts, the internal errors of the platform can be viewed. Two-channel memory is also supported by the system. Due to this, the speed of saving information is quite high. In this case, the reading of the data does not take a long time. Flex-memory, unfortunately, is not supported by this processor.

Expansion options

To support the expansion of the Pentium D processor, the EXPRESS editorial is applied. In the specified model, it is installed series 3.0. If you believe the opinions of specialists, then "Express" allows you to transmit the data sequentially. Also, the editors can connect the expansion bus. As a result, with hardware devices, a personal computer arise quite rarely.

Directly data management occurs with the interface cm. The edition in this case provides for various configurations. Some of them are designed to work with signaling channels. At the same time, others are created to handle modular files. The RS bus in this case is not activated.

Advanced technologies

The acceleration of the Pentium D processor occurs with the help of the technology in this way, the device performance can be highly enhanced. However, on energy consumption, this technology affects poorly. It should also be noted that it is not able to ensure the safety of the device. Pentium D is accelerated by changing the clock frequency.

With malicious software, the technology "Pro" is designed. The system is also aimed at monitoring all processes. According to experts, manage threats with the help of "about" simply. In this case, the user's personal information is safe, and confidential data is protected reliably. However, it does not apply to websites. Also, the "Pro" system is not able to ensure the safety of rootkits.

Technology "Haiper"

Thanks to the technology "Haiper" Pentium D is able to solve various tasks that are related to flow processing. In this case, the power consumption of the system is also taken into account. The kernels in computing operations are used separately. To increase the speed of information processing, it is very important. The TK system can interact with the reception modules. It is allocated by what is supported on the basis of architecture A-32.

In this case, virtualized applications are processed. The system is also able to cope with multi-threaded programs. According to experts, the "Itanium" function is very important for high performance processor. System security it also increases.

Tables at the processor

Technology "Table" The Pentium D model is available. For many programmers, she also calls the Second Address. Its main task is to be considered to handle virtualized applications. Support for two-channel memory in this case is provided. Special attention deserve programs on the TX platform.

According to experts, for their processing, the System "Table" is suitable ideal. However, it does not take part in reducing energy consumption. Also, the "Second Address" is not intended for hardware optimization of the central processor. Another option technology is considered to configure the autonomous security system. The forwarding table for this manufacturer is provided.

New system TKT.

Solution of problems with scaling occurs only due to the TCT system. It works completely in automatic mode. In this case, the memory module of the central processor is not activated. If we talk about the features of the technology, it is important to note that it is capable of working on the basis of architecture 64. The main function is considered to improve the software blocking.

For single-channel data transmission system can be used. She also participates in sending files to workstations. The central processor server is not activated directly. The speed of processing computing operations is associated with the throughput system of system. To connect wireless devices in the central processor, the technology "Wi-Fi" is used. For some printers and stereo systems, it can be very useful.

Systems "SIST" and "AIDS SPE"

To control power consumption, the system "System" is applied. According to experts, the speed of the central processor, it tracks quite efficiently. With a small load, the device instantly turns on idle mode.

AIDS Step is a technology that is designed to work with mobile applications. Also, this system is capable of supporting various programs based on the architecture of Cx. The voltage level of the central processor cannot be changed. However, to change the frequency of the base module, it is suitable ideal. Also in the "AIDS step" there are many strategies that allow us to divide streams. In this case, the signal recovery function in the device is available.

PLATFORM PROTECTION technology

Technology "Takes Platforms" is designed to work with various programs. In this case, the system is used to fully. Experts say that the Technology of Protection Platforms is capable of significantly expanding the capabilities of the processor. Chips in this case participate in solving problems whole.

The function of the measured launch in this model is provided. With multi-threaded applications, the system interacts normally. Hardware security feature is also provided. Vulnerability to viruses it reduces pretty much. More technology "platforms protected" can delete malicious code. Directly "Anti-Tef" ensures the reliability of the system on the AM platform.

Translation of Intel production lines to the new technical processors 65 nm revealed new processors on Cedar Mill and Presler cores. And if the mass release of the first (single-core Pentium 4 6x1) is still delayed, then dual-core Pentium D 9x0 is already available in the full assortment on store shelves. And it is particularly nice to note - prices for new items, especially for the younger models, are at an acceptable level and almost no different from the 800th series. Let's try to figure out the features of the new series of Intel dual-core processors and compare their capabilities with younger rules, as well as the closest competitor.

For a start, let's see what the processors have transferred 65 nm processors. If you carefully look at the history of processor development, it is easy to see that the decrease in the manufacturing process reduces the power consumption of the chip, i.e. Working voltage and heat dissipation decreases, and also increases maximum working clock frequencies. In addition, usually, the decrease in the size of the transistor occurs with the introduction of any technological improvements into new processors - increasing the size of the cache memory, add support for new instructions and technologies, and sometimes a significant redesign kernel.

If we compare the processors of the Pentium D 800th and 900th series, then all of the above trends are easily traced. In addition to a tangible reduction in power consumption, the processors have received a doubling of the second-level cache (2 MB on the kernel instead of 1 MB) and support for the promising virtualization technology of Vanderpool (Intel Virtualization Technology). Well, of course, an increase in clock frequencies is the fastest dual-core processor Intel now functions by 3.4 GHz. The truth was originally and losses in the form of technology Enhanced Halt State and Enhanced Intel Speedstep Technology, i.e. Processors have learned to "stop" and reduce power consumption with a decrease in voltage and multiplier (clock frequency) during inactivity. But not so long ago, Intel has updated stepping from almost all processors of the 900th ruler (except Pentium D 920) with B1 on C1 and returned lost opportunities. Unfortunately, the base has not yet been updated to say with confidence about all the features of the renewed kernel.

Another distinctive feature of new processors is Intel Virtualization Technology. So far, many users hard to imagine practical benefits from the ability to run on PCs at the same time two operating systems and as needed to switch between them. Namely, it is simultaneous work on one Windows and Linux hardware system, an Intel has been demonstrated a year ago. But this feature can already help network administrators today to make a unified management system of all computers of the enterprise, improve security and increase productivity of its work (if you believe Intel).

Pentium D dual-core processors and their characteristics:

	TechProcess
Pentium D 9x0 C1
Pentium D 9x0 B1

Intel Pentium D 930 came to our test laboratory, very promising price / possibilities for the ratio. And also we also received other processors necessary for full comparative testing.

The processor comes in a package with an updated design, "to the leg" with rebranding and aggressive advertising and pricing policies conducted by the Company itself.

The "Support Intel VIIV" logo is shown on the package (the latter is pronounced as "Waiv"). This logo talks about the involvement of Pentium D dual-core processors to the "digital house". In short, the idea of \u200b\u200bthe Intel VIIV platform is the use of a 945G, 945P, 955x chipset systems and dual-core processors with mandatory support for Intel Hi-Definition Audio and, at least, network communications using Ethernet Intel Pro / 100 running Windows XP Media Center Edition To create a high-performance media center.

Inside the box, everything is standard and invariably: manual with a logo, a processor (at first glance, not different from others under the LGA775) and the standard cooling system with a copper core.

Marking on new processors is not so easily distinguishable as on other models, but quite readable.

The location of the elements from the bottom of the processor is different from that of the 800th series.

For visual receipt of information about the processor, we used the updated CPU-Z 1.32 utility.

Processors with the core of the new stepping have not yet reached our retail - we got the "old" B1. The word "old" we naturally take in quotes, as the processor is the most new and technological of all intel sold today, and get upset due to the lack of Enhanced Halt State and Enhanced Intel SpeedStep Technology does not have a special meaning (except for only when Buying "hot" Pentium D 950).

We produced the first start of the system without updating the BIOS and noticed an interesting feature. ASUS called Intel Virtualization Technology a little unusual - Vendorpool. But it is possible to enable or disable this technology.

After updating the BIOS, the controversial moment with the correctness of the technology name was disappeared, and with it the possibility of its disconnection.

The 800-series processors had a low acceleration potential due to the complexity of architecture and a high initial heat release level. Therefore, we were interested in the accelerating potential of new two-threaten processors - will the situation fix the situation and TDP? But in the process of experiments, we managed and rejoice, and disappear. Immediately, the processor managed to start with a supporting frequency of the system bus 245 MHz, which gave the operating frequency of 3675 MHz (not bad, is not it?). The operating system booted, but the applications were launched through one, and the launch of S & M 1.7.6 led to a hang over a minute. I had to reduce, and then still reduce overclocking. Only at a frequency of 3450 MHz (supporting 230 MHz) All S & M tests 1.7.6 were passed. But after receiving half of the test results, the effect of "hanging one nucleus" was detected! The trouble was manifested as the hang of one of the tasks in multi-threaded tests (most often in PCMark), i.e. One of the progress indicators stopped, and the test could continue indefinitely (before the task is removed). I had to further reduce acceleration ...

Stable work and the passage of all tests managed to achieve only at a frequency of 3352 MHz. What, of course, is also not bad, but we expected more. On the other hand, we had only one processor on testing, which initially showed good potential, which means it is quite likely to obtain impressive results with another "stone" and a more advanced cooling system.

The appearance of the packaging is more accustomed, and has not yet undergone major changes.

From the top to the processor from others, for the LGA775, you can only be distinguished on labeling, and there are visible features from below (compare with the photo Pentium D 930 and others), but the identification is easier to produce on labeling.

Details about the kernel reports CPU-Z.

BIOS signals the full support of energy saving and overheating technologies. The same set of features received and updated Pentium D 930 stepping C1, it remains only to find them on the counter.

In addition to dual-core processors, the testing includes single-core, for the next assessment of the benefits of "two heads above one". In addition, testing was performed using the updated software and codecs. How relevant programmers multithreading?

The Intel Pentium 4 630 processor with some reservation can be considered half the Pentium D 930 - the same frequency and 2 MB of second-level cache memory on the kernel. Of course, it would be correct to compare the Pentium D 9x0 with Pentium 4 6x1 on the Cedar Mill core, but these processors have not yet managed to get to us for testing.

As you can see, within the same kernel, processors differ only in the technical process.

What pops up before your eyes when you hear "Pentium 4"? Surely a very hot processor comes to mind first, consuming a lot of energy and working on incredibly high clock frequencies. His appearance at the end of 2000 marked the company's refusal from the previous, very powerful and promising P6 architecture, on which three generations of Pentium Processors - Pentium Pro, Pentium II, Pentium III were based.

As a result of terrible experiments, something oriented, first of all, to work with multimedia appeared. The processor conveyor became incredibly long to ensure high frequencies, the level of power consumption and heat dissipation increased significantly, and the final price rose to an unbearable level. Pentium 4, working on the same with Pentium III clock frequencies, managed to lose him, standing at the same time 3-4 times more.

However, with overclocking, the new generation of processors has become much better - to overflow Pentium IV by 50-60% under air cooled was within the norm, only no one has seen from these "corn" megahertz - the speed gain turned out to be very small.

Against the background of such a nondescript appearance, AMD went to the attack, announcing very interesting and relatively inexpensive models of processors, which without much difficulty managed their competitors from the station Intel. The new technology that appeared from a competitor, AMD quickly responded with its own analogue, constantly supporting parity and not yielding to anything. Well, by the mid-2000s, "green" and at all went into the attack, announcing athlon 64, Athlon 64 x2 first, and then Athlon 64 FX, which in games shone much brighter than competing Pentium 4 HT, Pentium D and Pentium EE .

Pentium D against Athlon X2

In the meantime, in parallel, working out the Mobile Pentium M and Celeron M processors, Intel recognized the erroneousness of the NetBurst architecture, and fully switched to the creation of a new, economical and very productive Core architecture, based on Pentium M mobile processors, which are ideological and architectural continuers of Pentium III. However, the development of a new processor is not easy processor, and during its design and creating a competitor can greatly break out, unless of course roll out a more or less adequate product. They, of course, became Pentium d, at the SMITHFIELD core, focused on the market of productive home PCs. He spokesitically did not create a miracle, yielding almost all game tests by dual-core Athlon 64, but it was still helped to keep the company's image.

As a result, everyone was happy - the company rejoiced the presence of a competitive dual-core multimedia processor in the market and was not distracted from the development of Core 2, and users received aesthetic pleasure from the presence of a multiprocessor system. Inexpensive models like Pentium D 805 and did dual-core processors available almost for everyone - it was necessary, and with acceleration turned out to be more powerful pentium d 840ee.

Physically Pentium D 8x0 (SMITHFIELD) was two Pentium 4 5xx (Prescott) crystal, "paved" on one substrate. They functioned at a frequency of 2.66 - 3.2 GHz, possessed 2x1 MB of second-level cache, and were manufactured according to the 90nm process. The first downtown CPUs turned out to be voracious in terms of energy consumption, and very hot, which, however, did not particularly affect their high popularity. A little later, Intel, of course, tried to correct the shortcomings, announced the second, cooler generation of dual-core 65HM CPU - Pentium D 9xx (Presler) on the basis of two Pentium 6xx (2x2 MB of cache, 800 MHz FSB, 65 NM technical process).

Double-core processors of architecture K8, on the contrary, kept very firmly, and more powerful models with 4xx0 + and 5xx0 + index, regularly appearing on the market, only increased AMD positions. They were colder, more economical and often more productive than that faults that Intel spoke to users under the guise of "powerful gaming and multimedia processors". If it were not for the ongoing architecture of Core 2, who knows how else AMD has strengthened in the market.

However, the performance of Intel dioxidants was enough at that time for many games. For example, in TES IV: Oblivion or Fear, well-advanced toys are advanced from the point of view, the difference when changing Pentium D on Athlon 64 x2 was practically absent.

Looking at modern laptop iron, you can see how AMD guess at one time, and the Intel was calculated - the K8 architecture microprocessors (Turion 64 X2 Ultra) are still actively used in laptops in a pair with powerful video cards, providing them with due product for 100% disclosure. potential. As for Intel, it was completely refused to completely abandoned Kuts Pentium 4 Mobile in his laptops, preferred Pentium M.

Testing technique

To date, there are no few users who are still sitting on the old platform. Of course, I'm not talking about those who still get along the processor with 478 socket and AGP video card, no, I'm talking about those who are not lucky with buying a motherboard with the next upgrade. After all, very powerful boards like ASUS P5WD2, with excellent characteristics and excellent dispersion features, did not acquire support for Core architecture processors due to the power supply system, while budget motherboards at 945 chipseet partly have such an opportunity.

Actually, it would be interesting to know if the user with overclocked up to 4 GHz Pentium D to provide an acceptable speed in games by buying a RADEON HD 5770? The answer would probably be obvious if it were not for one thing - sooner or later to do an upgrade, and if we assume that the user would buy the most inexpensive processor and the most inexpensive RAM, as far as he won compared to Pentium D, and will provide a new inexpensive processor acceptable speed?

To implement a possible upgrade, a stand is collected from the cheapest components based on the AMD platform. Why is AMD and not Intel? First, to collect the Intel processor system for a 775 socket is inappropriate - as it is not sad, but the platform has become a dead end after the new generation of processors of Nehalem architecture processors, and new sockets - LGA-1156 and LGA-1366. It will take another year, and Intel will finally deliver a cross on the LGA-775. Secondly, even if they try to collect an inexpensive system under Nehalem based on the same Pentium G6950, it will be faster, it will be much more expensive than the configuration collected on the AMD platform. Yes, it is also not known whether new Sandy Bridge processors will be compatible with old motherboards or not that in a negative case will also lead to its futility. Finally, collecting the platform based on the same Athlon II X2, the user will receive further deposit for the future, and after six months without any problems will be able to profite on some Phenom II x4 or even x6. And since no new sockets and global changes in AMD in the next year and a half is promised, such a system will be bought by the future.

Heroes testing

Intel Pentium D 920 2800 MHz

At the time of Announcement Pentium D 920 was one of the most inexpensive models of Intel dual-core processors. He accelerated very well and in default did not grow much from his senior fellow. This CPU was manufactured on the 65th technical process, the volume of the L2 cache was 4 MB (2 MB for each kernel), the FSB bus is 800 MHz. In general - typical Pentium D, hot and high-frequency.

There were no problems with overclocking - using the ICE HAMMER HI-4401 + tower cooler, high to 1.5 in the voltage and good motherboard ASUS P5WD2, it was conquered 4066 MHz (45%), i.e. Preasurement in the frequency equivalent was 1266 MHz. This, of course, is a very modest result for Pentium D, because many copies well worked at 4200-4500 MHz, while using air-cooled. But, alas, for this instance, the achieved frequency turned out to be the limit.

Athlon II x2 215 2700 MHz

To date, the most inexpensive dual-core processor from AMD under the AM3 socket. It can work with DDR3 memory, chasing well and heats a lot. For functioning on a default frequency, a very weak cooling system is required. It has only 1 MB of second-level cache (512 KB on the kernel), and is produced in 45 nm in technical process. In the Russian retail, such a CPU costs about 1500 rubles, and at its price I am only inferior to the duid Celeron E3200 under LGA-775, which is about 50-100 rubles cheaper.

With acceleration Athlon II X2, not everything is so smooth as I would like. It would be quite good to achieve a level of 4 GHz, however, due to the inexpensive operational DDR3 of the memory used in the test bench (namely, it can afford an economical user, collecting a budget configuration), acceleration limited 3500 MHz, which is 30% or 800 MHz in Frequency equivalent.

Test Stand Configuration

Intel platform:

• Motherboard: ASUS P5WD2;
• Thermal interface: KPT-8;
• RAM: 2x 1 GB Patriot DDR2 RAM 800 MHz 5-5-5-12;
• BP: TUNIQ 950 W;
• Acer V243H monitor.

AMD platform:

• Motherboard: ASRock Socket-AM3 M3N78D;
• Cooling system: Ice Hammer Hi-4401 +;
• Thermal interface: KPT-8;
• RAM: 1x 2 GB Kingmax 1333 MHz;
• Video card: ASUS RADEON HD 5770 1024 CUCORE DEFAULT;
• Hard disk: WD Black Caviar 1000 GB;
• BP: TUNIQ 950 W;
• Acer V243H monitor.

Software:

• Operating system: Windows 7 Ultimate 32 Bit;
• Drivers: Catalyst 10.6, ForceWare 257.21.

Required Supplement:

The testing was attended by 4-nuclear Phenom II x4 810, unlocked to Phenom II x4 900 (possessing 6 MB of L2 cache) and dispersed to 3000 MHz. This CPU has been added for comparison, and, evaluating the results, it will be possible to conclude - how many one or another processor is lagging behind the "recommended" four-folder.

For more honest testing and clarity, the initial clock frequency of all test processors was set at 3 GHz.

Why does Radeon HD 5770 take part in testing? This video card provides sufficient performance to play with the maximum graphics settings in most applications, and is a certain basic level for gameimers. Radeon HD 5670, which bears on board only 400 scalar processors, is not particularly well suited for modern toys, and its performance can simply not be enough that actually relates to GeForce GT 240. In addition, comparing the results of Pentium D and Athlon II x2 with Phenom II X4 920, we define processor-dependence and see how much these two CPUs will stop from Phenom.

Comparative Table of Processor Characteristics:

Name	Pentium D 920.	Athlon II X2 215	Phenom II x4 810 @ 9xx
Code name	Presler.	REGOR.	Deneb.
Architecture	NetBurst.	K10.5.	K10.5.
TechProcess	65 Nm	45 Nm	45 Nm
Clock frequency	2800 MHz	2700 MHz	2660 MHz
Cache L2.	2x 2048 KB	2x512 KB	512x4 KB
Cache L3.	-	-	4048 KB @ 6144 KB
Factor	14	13,5	13
Nuclear	2	2	4
TDP level	95 Watt.	65 Watt.	95 Watt.

Test programs:

• 3DMark 2005.
• 3DMark 2006.
• Crysis
• Crysis Warhead.
• Farcry 2.
• Resident Evil 5.
• Warhammer 40000 Dawn of War II: Chaos Rising
• The Elder Scrolls IV: Oblivion
• Need for Speed: Shift
• Unreal Tournament 3.
• Call of Duty: Modern Warfare 2

All games were tested in two modes:

• 1280x1024, AAX4, AFX16
• 1920x1080, AAX4, AFX16

For testing, built-in benchmarks were used or a 3-minute game to detect the average FPS value through FRAPS. The route was always chosen the same, on it and the frame rate was measured per second.