AMD Phenom II X 4 955 Black Edition Overclocking

AMD Phenom II X 4 955 Black Edition (C3) is running on the 3.2 Ghz stock and I have been able to overclock to 3.8 Ghz, with the help of stock voltage (1.4v), using the stock heatsink and fan.

cpuz

CPU-Z connection

I overclocked AMD Overdrive, annex in Windows, rather then BIOS this way to see and check if Computer is stable to him.

Best settings for a stable system and temps I ended up with the following settings:

I just changed the speed of the bus while the multiplier stock 238 @ 16. In this way, you overclock the CPU and RAM at the same time, also I change fan control of direction and each of the 82% (higher is better, but noise I 82%)

With the rate of 82% (about 3000rpm) idle TEMPs @ 3.8 Ghz are around 38 ° c and under load are around 55 ° c, which is pretty good for the stock heatsink and fan.

However, note that I use ArticSilver 5 thermal paste.

For some reason, the motherboard held by increasing the voltage of the Cpu past its normal setup of 1.4V (for C3 version, the version of the C2, the setting of the stocks was 1.35V) when I put the CPU voltage control to automatically. motherboard increase the voltage of the Cpu at 1.456v, causing the processor to be heated to 70 ° C under load! After many tries I ended up changing automatically, manually, and then to the normal setting, because under manually 1.4v it could underclock voltage 1.34v, make the System unstable. I believe that this is a problem with the BIOS for the motherboard and CPU.

Runing stock @ 3.2 Ghz = 5722

Overclocked to 3.8 Ghz = 6855

CPU = AMD Phenom II X 4 955 Black Edition C3
RAM = 4 GB Corsair DDR2 800 5-5-5-18
Motherboard = Gigabyte GA-MA790GP-Might BIOS F6
Video = its HD6870 1 GB 900/1050
PSU = Corsair 620HX
HDD = 2x500GB 7200RPM Seagate RAID 0
Antec 900 CASE =
OS = Microsoft Windows 7 Enterprise x 64