Legion Hardware reviews ASUS’ Extreme X800 Silencer.  As the name implies, this is a new ATI card that runs dead silently.  The heatpipes heatsink may be huge, but with it you can overclock this thing very well.
“This new passive cooling design by ASUS has proven to deliver exceptional performance while operating with complete silence. The demand for silent cooling methods has become increasingly popular as volume has become a real concern over the past few years. Today’s graphics cards and processors generate very large amounts of heat making cooling a real issue.”

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