i just upgraded my old p4 1.8 gig p4 to a 2.8 (powerleap upgrade from hell) but its running at like about 70 degrees idle, when i try benchmarking software it goes up to about 80-85 and it starts to really slow down. I used the heatsink from the upgrade, but i had to jimmy it by bending the heatsink to be able to stick the 4 screws in it. It cooled down a little bit, but not a whole lot. Im trying to find a new heatsink for the computer but i think with a dell (still need new case and mombo, everything else is new), but i never have luck finding somethin for under 100 bucks (mabye then i should get a new one, tiger direct has a case for 39 (i dont need anything fancy im in the process of buildin my own. Newegg had a socket 478 for 50 bucks, its all i need as long as its oc'able and has a normal socket not like the dell where i need a normal heatsink not the one you get, i just screwed the fan off the heatsink off the powerleap.