the 4870X2 has a fan built in that will blow the air directly out of the back of the case ... but i would still recommend a fan as it runs hot untill you fan hack it, which is pretty much a must ... as for the water cooling, yes the 4870X2 has a waterblock out already
here is one
http://www.dangerden.com/store/produ...&cat=47&page=1
and here is another of higher quality
http://www.koolance.com/water-coolin...product_id=731
and here is a chart showing a few others and how well they perform so you can get an idea of the performance ratio
http://www.martinsliquidlab.com/EK-F...t-GTS-G92.html
(note ... scroll down on this one to see the charts, its not far at all but it is below the top)
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