IT Tips & Tweats

Published on July 23rd, 2011 | by Klaslo.com

AMD Phenom II X4 955 Black Edition overclocked to 4ghz

AMD Phenom II X4 955 Black Edition overclocked to 4ghz

So I finally overclocked my AMD Phenom II X4 955 Black Edition CPU to 4ghz, and I can report that it is running 100% stable.

AMD Phenom II 955 4ghz

However this is different to my last post (overclocking to 3.8ghz) since this time I overclocked it by only changing the multiplier to x20 instead of changing the FSB. I have found that when doing a system stress test using Prime95 the system was 100% stable.

Benchmark Results using Geekbench 32bit:

Stock at 3.2ghz = 5722
Overclocked (FSB) to 3.8ghz = 6855
Overclocked (multiplier) to 4ghz = 7109

Benchmark Results using Geekbench 64bit

Overclocked (multiplier) to 4ghz = 8285

CPU-V Validator link

My Overclocking Video

Here is a short video I made:





Conclusion

After comparing both types of clocking FSB and multiplier I believe the best setting or optimal setting for the AMD Phenom II X4 955 Black Edition to reach 4ghz is to set the multiplier to x20 and not changing the FSB as in my last post. The AMD Phenom II X4 955 Black Edition C3 does run stable on multiplier x20. Unless your have very good high end DDR2 or DDR3 Ram I suggest overclocking your The AMD Phenom II X4 955 Black Edition via the multiplier.

My PC Specs

CPU = AMD Phenom II X4 955 Black Edition C3 @ 4ghz
Cooling = CoolIT ECO Advanced Liquid Cooling CPU Cooler
RAM = 4GB Corsair DDR2 800 5-5-5-18
Motherboard = Gigabyte GA-MA790GP-DS4H (BIOS F6)
Video = HIS HD6870 1GB 900/1050
PSU = Corsair 620HX
HDD = 2x500GB Seagate 7200RPM RAID 0
CASE = Antec 900
OS = Microsoft Windows 7 Enterprise x64

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