Zalman CNPS9500 AT CPU Cooler
 

Start off with a 100% copper heatsink with a aerodynamically optimized tunnel design for maximum cool efficiency, add in fins that measure a mere 0.2 mm in size guaranteeing the best possible air flow through the heat sink. And finally using Zalman's very own patented heatpipe bending design the CNPS9500-AT has the same heat transfer characteristics of a 6-heatpipe unit while only using three-heatpipes.