Hey guys, Just put my new rig together... Its an X2 3800+ with an Arctic 64 Pro... I just put it on using the paste / tape thats already on the HSF (Can't remember whether it was paste or not )... I'm getting idle temps of around 37 and full load temps of 45 / 46 (Speedfan boosts my CPU fan to 100% instead of 50% when it goes over 45 and it stays very close to 45). Question is: Would it be worth taking the HSF off, cleaning it and the CPU up and then reapplying but using AS5 (I have some kicking around). Cheers!