Q6600 Overclocking Database.

[crossg]

I think 3,2 is possible with the B3 steppings.
I hope you don't have to put the voltages up so high but it's deppending on what you get.

If you have the right Mobo 3.2 is very easy to achieve on air and keep the temps reasonable. 3528 Mhz ,1 week stable contininuous Folding @ Home and temps never exceeded 60 deg c. Ambient temp was 22 deg c. As soon as ambient temp increases I have to back off the OC to keep below 60 deg. I have booted @ 3730 and ran Super PI and a few other apps but an Idle temp of 45 deg is probably going to top out at 75 deg+ and that's too high for me. I have had no troubles clocking the B3 stepping chip so far with my current board. I am sure it will go higher but with my cooling it would just be frustrating to know I can't use it.
CPU and Heat sink are lapped BTW.