I second that. AMD's K8 heatsinks do work pretty well, even the old-school aluminum-brick one like on my socket 939 X2 4200+. It's pretty quiet and my chip never got above 45 C running at full load. I've not had as good of luck with stock Intel heatsinks. The heatsink on my parent's P4 1.8 Willy doesn't work very well and the chip is usually in the 50s. A dual Irwindale Xeon unit with the 1150 g copper heatsinks works pretty well as the chips stay under 50 but those suckers are L-O-U-D. Intel would not do badly to go with the Cooler Master heatsink in the future.