I just got a new cooling unit, a CoolerMaster Hyper 212 Evo for my X3 720 and am trying to overclock it. I did try unlocking the 4th core but all I got was a black screen upon restart.
(btw I am not very experienced at overclocking)
So far I have set the CPU Vcore to +.05 and it's now stable at 3.4ghz (multiplier at 17). It was not stable at 3.4ghz without upping the voltage. CPU-Z shows the CPU voltage to be at 1.408v so I don't really understand how the + CPU Vcore works...Stock voltage is 1.3 so I thought +.05 would make it 1.305
I tried setting it to +.10 and going to 3.5ghz but it BSOD'd running Prime95
How high is it safe to go with the voltage? Temps are still fine, never going over 37-38C at 100% load.
Also I've noticed Cool N' Quiet doesn't seem to work once I overclock...it's still checked as enabled in my BIOS but it just stays at 3.4ghz all the time.
CPU: AMD Phenom II X3 720 @ 2.8ghz
RAM: G.Skill RipJaw DDR3 1600, 8gb - 2gbx4
GPU: ASUS HD 5770 (1gb, 850/1200)
MOBO: BIOSTAR TA790GXB3
PSU: Antec Earthwatts 650W