AMD processors don't run hotter then P4... I've check it out on the white papers. Intel makes it complicated by not posting the max thermal power, but they do for the xeons, which are the same anyway. http://www.computernerd.com/inteltdp-2.html The only time there was a discrepency was when the P4 went .13 micron, and AMD was still at .18. If P4s run cooler at all, it must have something to do with the size of the die. Also, the P4's bracket encourages larger coolers... the stock AMD cooler is still 60 mm. The 2.4 GHz has a max of 75 watts, and the 2400+ has a max of 68 watts. A 3.06 GHz does 100 watts max!