The number one question Frostytech readers ask us is "what's the best silent heatsink?" Much of the time, readers find themselves asking us this question after they've built a media center PC using the standard type of heatsink one normally finds in local computer stores. If you need a silent heatsink, and I do mean silent, the Scythe Zipang (SCZP-1000) is the next best thing to a passive block of aluminum (the only truly silent option). What makes the Zipang quiet is a 138mm wide fan that spins at a lazy 1000RPM.