I found a better place to ask this question in the overclocking section. Sorry.
I have been incrementally increasing the vcore on my Q6600 to get 3.6ghz stable at the lowest possible voltage.
I have good watercooling, my temps are 63, 57, 57, 63 C (not lapped, maybe some other day)
Currently 3.6ghz, 1.47500 bios vcore, possibly still unstable.
I got to 1.46250 in the bios, which is 1.408 idle and 1.344 load in CPU-Z.
It crashed (not a core error, the computer went down) after a few hours of prime95.
So I moved up one step in the bios to 1.46875.
However, CPU-Z reported the same exact idle/load voltages as before.
So I moved it up again in the bios to 1.47500.
Same thing in CPU-Z.
Up to now, it has been giving me slightly higher numbers each time I change the bios vcore.
Should I trust CPU-Z and keep raising the bios vcore until the numbers change? Or should I go back and test 1.46875 (the one I skipped because it was the same in CPU-Z) to test if it is stable?