Ok here's the problem. I had the stock heatsink on my Pentium 4 2.4 GHz. It was idling at about 47* celcius, and the case was about 39. Today I got the Thermaltake Polo 735 heatsink. I put it on, and even with fan on full blast, CPU idles at around 47, load is about 63. The case temps are still the same. Is the problem that the case temps are high and it's just blowing warm air over the CPU? Do I just need more case cooling. In about a week I'm either getting 512 more RAM, or 2 80mm fans for intake and a 120mm for top exhaust. I already have 1 80mm side intake and 2 80mm back exhausts. Whats the problem here?