After reading all the posts about TAT, I am now gunshy OC'ing the E6400. I previously had it running at 3.2GHz. Temps looked great per Speedfan. I ran TAT and it scared the **** out of me. 70C w/100% load. I backed off to 2.6GHZ, now 55C w/100% load. This with the BT and 23C ambient. Makes one wonder what kind of temps a Smithfield is actually running. TAT only works for PCG 06.