Quote Originally Posted by Cy4n1d3 View Post
Often happens if Offset Voltage is set too low. You could also try lowering Offset a bit and using LLC4 instead of 5.
I'm using fixed voltage and for some reason when I manually overclock I lose the LLC option on Asrock P67 Pro3. I'm guessing it's not enough vcore. But I pass 10 passes of IBT, 20 passes of LinX and it crashes while surfing or idle.

If it were vcore I'd think LinX or IBT would fail.