The real question is which of the 2 are faster overclocked to 4Ghz =), I am going for the Q6600 G0 and I intend to clock it at 3600Mhz, as long as I get that I will be happy untill the X38 chipsets hit the market and then my PW5 DH will go to the wife and then the push for 4Ghz on the Q6600, I know it might not happen but there nothing wrong with aiming high.