I have a q6600 G0 which will OC at max to 3.6ghz with a vid of 1.3250. I cant rember the voltage I had it at but I think I had it @ 1.475v with the CPU watercooled nothing else in my watercooling loop. The CPU hit 65 celcius under full load. I could boot to post " 4ghz but failed to load windows. Can load windows @ 3.8ghz but it will crash as soon as I try running any programs. The best stable I can get it to is 3.6ghz.

I am getting an Asus Maxus Formula soon and as soon as I change the CPU water block Ill be reinstalling my Q6600. Will do some testing.