I have a p4 machine that I built myself last October. Its a 3.0HT w/ 1 gig dual channel. The thing usually runs around 39C when idle. I added a 9800pro last night b/c I needed to upgrade the old video card. Now the machine idles 10degrees more Celsius with the addition of the card. You guys think I need a new heatsink and fan? Its the standard intel one that comes with the processor. My only thought is that since the 9800pro requires a power supply connection, it must need a decent amount of power and probably generates more heat. My processor also spikes to 66C when playing games.