Okay, I am a collector of parts. Through no fault of my own I have acquired a Pentium 4 640 Prescott from an old Dell XPS machine. I'm now using that processor to build an internet computer for my wife who has been using an old AMD Athlon 2200+ for many years which is now threatening to die. The problem is I don't have a beefy heat sink for the Pentium 4, but I do have a stock heat sink from a Intel Core 2 Duo E7200 that will fit in place on the motherboard, but I doubt that it will do the job properly. Will the stock heat sink from an Intel Core 2 Duo E7200 do the job? Please chime in if you wish to speculate or have any experience with this problem. Thanks!