AMD Phenom II "Reasonable Selection"
Today I will tell you about the extreme selection of AMD Phenom II 965 processors, based on the new promising C3 stepping.
On the selection was given 3 copies of the processor.
First of all, it was decided to first try what they can do when using air cooling. As a cooler, there was a standard boxed one, which comes in a boxed version of these processors. The technique is extremely simple: a given voltage is applied to the core and the processor that, at a higher frequency, passes a multi-threaded test (for example, CPU test from 3DMark 2006), is better. What was my surprise when by an experimental method it turned out that all 3 instances lost stability at the same frequency! Then I tried the method “from the reverse”: the frequency is set at 4000 MHz and the power to the core is gradually reduced. And here is the same thing! All 3 copies faltered at 1.412 V. The conclusion can be drawn as follows: a streamlined pipeline for selecting processors at the manufacturer’s plant, as well as a good percentage of the yield of suitable crystals.
')
3 flight in flight:
All the test subjects had the same 33rd week of 2009 release:
But I was not more interested in the potential for overclocking processors in the air. Therefore, I assembled the stand and checked whether they were the same when using extreme cooling using liquid nitrogen (-196c).
- AMD Phenom II 965 C3 revision socket AM3
- GIGABYTE 790FXTA-UD5 (the first motherboard with USB3.0 and SATA-III support for the AMD platform)
- 2x2048Mb Corsair DOMINATOR GT 2000C7
- ATI Radeon HD4890
- WD Raptor 740ADFD
- Enermax Revolution 1050W
- Windows Vista SP1 EN full tweaked
- cooling: nitrogen cup of own design MiniGun rev.1.4.
As is known, the Phenom II processors and the Athlon II models derived from them do not have the concept of ColdBug (failure to work at low temperatures), therefore, we will cool them to the limit, as far as nitrogen allows us.
Work in full swing .... and nitrogen too!)
All 3 in turn were tested first for maximum validation.
1st mastered 6658 MHz
2nd mastered 6625MHz
The third was mastered by 6727 MHz , one is better than the previous ones 2, this one I will torment again.
valid.canardpc.com/show_oc.php?id=983081
This was followed by a multithreaded test wPrime www.wprime.net .
The test creates a rather heavy load on the processor power converter and is demanding of the overall stability of the platform. He is also one of the disciplines of the world overclocker ranking hwbot.org.
Passing the test at 6400MHz is quite a serious statement, especially since it is among the top 5 in the world.
hwbot.org/rankings/benchmark/wprime_32m/rankings?hardware=phenom_ii_x4_965_be
It is worth noting that the motherboard holds excellent load on the power supply circuits and has never failed during the test.
During testing, no processor was hurt! )
On the selection was given 3 copies of the processor.
First of all, it was decided to first try what they can do when using air cooling. As a cooler, there was a standard boxed one, which comes in a boxed version of these processors. The technique is extremely simple: a given voltage is applied to the core and the processor that, at a higher frequency, passes a multi-threaded test (for example, CPU test from 3DMark 2006), is better. What was my surprise when by an experimental method it turned out that all 3 instances lost stability at the same frequency! Then I tried the method “from the reverse”: the frequency is set at 4000 MHz and the power to the core is gradually reduced. And here is the same thing! All 3 copies faltered at 1.412 V. The conclusion can be drawn as follows: a streamlined pipeline for selecting processors at the manufacturer’s plant, as well as a good percentage of the yield of suitable crystals.
')
3 flight in flight:
All the test subjects had the same 33rd week of 2009 release:
But I was not more interested in the potential for overclocking processors in the air. Therefore, I assembled the stand and checked whether they were the same when using extreme cooling using liquid nitrogen (-196c).
Stand:
- AMD Phenom II 965 C3 revision socket AM3
- GIGABYTE 790FXTA-UD5 (the first motherboard with USB3.0 and SATA-III support for the AMD platform)
- 2x2048Mb Corsair DOMINATOR GT 2000C7
- ATI Radeon HD4890
- WD Raptor 740ADFD
- Enermax Revolution 1050W
- Windows Vista SP1 EN full tweaked
- cooling: nitrogen cup of own design MiniGun rev.1.4.
As is known, the Phenom II processors and the Athlon II models derived from them do not have the concept of ColdBug (failure to work at low temperatures), therefore, we will cool them to the limit, as far as nitrogen allows us.
Work in full swing .... and nitrogen too!)
All 3 in turn were tested first for maximum validation.
1st mastered 6658 MHz
2nd mastered 6625MHz
The third was mastered by 6727 MHz , one is better than the previous ones 2, this one I will torment again.
valid.canardpc.com/show_oc.php?id=983081
This was followed by a multithreaded test wPrime www.wprime.net .
The test creates a rather heavy load on the processor power converter and is demanding of the overall stability of the platform. He is also one of the disciplines of the world overclocker ranking hwbot.org.
Passing the test at 6400MHz is quite a serious statement, especially since it is among the top 5 in the world.
hwbot.org/rankings/benchmark/wprime_32m/rankings?hardware=phenom_ii_x4_965_be
It is worth noting that the motherboard holds excellent load on the power supply circuits and has never failed during the test.
During testing, no processor was hurt! )
Source: https://habr.com/ru/post/83113/
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