asetek Antarctica LGA775 Water Block
 

"Even with the system overclocked, the temperatures were still a good 10
degrees C below the stock Intel heatsink. The time between full load and
idle temperatures was also quite low. Temperatures dropped nearly 10
degrees almost the instant I closed Prime 95 and paused Folding @ Home."

http://www.viperlair.com/reviews/coo...blocks/antlga/