AMD Athlon II X2 255 Processor Review

👤by James Clewer Comments 📅14-11-10
Setup, clocking and temps

Test setup

Motherboard: Asus Crosshair IV Extreme
RAM: 4gb OCZ 1333MHz PC3-10666 C9 DDR3
HDD: 160gb WD 7200rpm SATA HDD
Optical drive: LG Bluray/HDDVD Multidrive
CPU cooler: Coolermaster Hyper TX3
PSU: Nexus RX-8500 850w


Despite not being one of AMD's special multiplier unlocked 'Black Editions' thanks to a high multiplier the 255 begins at an impressive 3.1GHz stock clock speed.

255 @ stock.

A voltage bump of just under 0.1v allowed me to push the FSB to 240MHz which returned a creditable overclock of just over 3.73GHz.


I knew there was more in the chip so pushed on.

Another voltage bump (only 0.06v this time) allowed an extra 11MHz on the FSB to give just under 3.9GHz.


So close to 4GHz... it was now a mission!!!

Another 0.06v increase on the CPU voltage (0.05v wasn't quite stable) allowed a nice clean 260MHz on the FSB. 4.03GHz was the final stable clock.

Just over 4GHz.

I wouldn't advise this kind of voltage (I tend to limit myself to 1.55v) although I have seen users at close to 1.6v who say all is fine and dandy.

None the less that's an impressive overclock for a 55 processor.


Temperatures at stock were exceptional - probably all thanks to the C1E system.


Even when clocked they were more than acceptable. The TX3 happily coped with it which is good news for anyone with a half decent cooling solution.

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