Your probably goin to hear alot of ppl recommend alot of different heatsinks (at least that was my experience) i just went with the ninja cuz of how big it was, it has the silent mode. If your havin trouble, heres a chart from tom's hardware that has benchmarks and information for 10 different heatsinks: http://www.tomshardware.com/2005/06/07/10_mammoth_cpu_coolers/