I have sold my c2d rig as i wasn't really using it apart from basic pc use, and got a s939 setup with the deal, it had a 3700sd/mobo, 3 gig ram, now i have put a x2 3800 in and i am more than happy with its performance but i noticed on the temps side, once core is idling around 33c and the other around 40c, now i thought maybe the zalaman wasn't sitting properly so re did it but its the same thing a good 7c difference between the cores is this ok.