Some of the chips just run hotter. I have a 1.8A and with the stock heatsink and AS3, my idle temps were around 52 degrees, and full load was 67-68 degrees. With a Thermaltake P4 478 Volcano with AS3, my idle temps were around 46 degrees, but my load temps were still at 67-68 degrees. With my current Cooler Master IHC-H71 heatsink and AS3, my idle temperatures are around 48 degrees and my load temps are around 64 degrees. So some of the chips just seem to run hot, or some of the motherboards out there report a higher temperature. (Or on the other hand, some motherboards could be reading a lower temperature.) But the temperature does not matter one bit with your cpu. If your CPU idles at fifty degrees and has a load temperature around 65 degrees and is completely stable, then the temperature doesn't matter. If your CPU idles at 35 degrees and has a load temperature of 47 degrees, but you have to keep upping the voltage in order to keep it stable, then does having that low temperature really mean anything? (I believe that it is the higher voltage over the long run that will kill a cpu, not the heat.) Heat can only kill the CPU if the heat gets out of control and fries the chip. If my physical-chemistry memory serves me correct, semi-conductors actually run slightly faster at higher temperatures than at lower temperatures. That's why overheating will kill a cpu. It will heat up, and run faster which will generate more heat, which will make it run faster, etc. etc. until the chip melts. That's why a heatsink is important. It tranfers that excess heat away from the cpu. So if your computer is running stable, then don't worry about the temperatures. My temperatures might seem kind of high, but my computer is rock-stable and runs perfectly fine. (I'll be putting an air-conditioner in my room as soon as a new circuit is installed in the wall, and that should lower my temps quite a bit. But I won't be overclocking any more simply because once I'm not running the AC, I don't want to have to downclock it. lol)