You guys who use a Pentium 4 or Celeron D on LGA775, do not get an aftermarket heatsink. I was talking to the reviewer from The Tech Report and he told me that the Intel stock heatsink is the best heatsink and cheapest one for the LGA775 processors. It keeps it cool and is rated up to 7000 RPM. I'm pulling out my 3d Rocket Cooler right now as it is a piece of shit. After reseating it around five times, my temperatures became higher and higher. Take my advice and stay away from the aftermarket air cooling for the LGA775. Sure, you want substance cooling, then great!