I agree, it sounds a bit high for an XP. I have the 1800XP with a Thermalright SK-6 and a 60mm fan, and two 80mm case fans, and my temps run around 38 degrees with ambient air temps around 70. With my old T-Bird 1gig they used to run consistently above 42 degrees, but even in the summer with no ac they never hit 50. One thing, are these temps after a hot and heavy gaming session or just normal run temps? If they are just normal running temps, you might want to look into a better heatsink/fan combo. I've heard that using thermal paste instead of a pad will help too.