"Want to know what heatsink AMD rely's on for its socket AM2 Athlon64 FX and Athlon64 X2 reference platforms? The AVC Z7U7414001 heatsink. While this cooler certainly lacks a catchy name, for an OEM heatsink it packs a big punch in a little package. The AVC Z7U7414001's thermally responsive fan enables the heatsink to automatically adjust its fan speed as ambient case temperature dictates, thus decreasing noise output as much as possible."