I just assembled a new computer, with a P4 3.0C, Intel D865GBF motherboard, stock Intel heatsink/fan and Antec Sonata case (1x120mm exhaust fan). The idle temp seems to be approx 35-40C, but when I open up Unreal Tournament, the graphics start chopping up, and the temp readout indicates 50C (this is after a couple minutes of gameplay, I think the motherboard is throttling back the cpu clock speed, which is causing the slowdown). A friend of mine recently put together a 2.4C which ran hot at first, but he said it seems to have "settled in" and dropped to the 30C range. Is this typical for these P4 CPU's? My case has a mount for a 120mm intake fan, but i would like to avoid installing one if at all possible, to reduce noise. I will if I have to. I've noticed many computers these days get by with just an exhaust fan, so hopefully I'll be fine. If my heatsink/thermal transfer shit does need to "settle in", how long does that usually take? Thanks in advance for any advice.