The thermalright heatsinks are built to have standard case fans put on them, so you buy the heatsink and then a good quality fan, and they become awesome coolers. I have the XP-120 now, and that thing takes a 120mm fan on it. This is now believed (by many) to be the best s478 cooler around atm, and the good thing is that 120mm fans are nice and quiet too. I'd highly recommend it. Only thing is it's probably the most expensive cpu air cooler around too. Also, the size can end up being too much for some motherboards and cases, so you might want to check that out first. I own a P4P800 Deluxe in a CM Stacker so it fits fine.