The Asus Triton 85 heatsink FrostyTech is reviewing today ships with a 120mm 800-1400RPM PWM fan, and weighs around 520 grams. The heatsink is uses four 6mm diameter copper heatpipes to support a 120x120mm aluminum fin array above the CPU block. This orientation directs fan exhaust down towards the CPU area to cool adjacent motherboard components, chipset heatsinks and VRM circuitry.
FULL STORY @ FROSTYTECH (http://www.frostytech.com/articleview.cfm?articleID=2312)