E7200 at 3.94GHz wasn't stable. Damn! 3.9GHz wasn't stable either. Got it down to 3.81GHz. This is on P5B-E and it doesn't allow manual tuning of Vcore on 45nm CPUs (!) Stupid Asus BIOS!!!

So the Vcore is max the BIOS allows. That is, 1.1V (VID) + 0.35V = 1.45V in BIOS, but 1.392V in CPU-Z and 1.336V in OCCT (couldn't check it while running this tool!)



Quite scary! Took it to 83C!!! This is with Asus Silent Square Pro. I think I need to lap the HS and get some AS5 :/