I'm not much bothered about water cooling, but I'm always a sucker for crazy mentalist overkill setups. To that end I point you in the general direction of Project Monolith:
http://www.bit-tech.net/modding/mod-of- ... may-2009/7
http://forums.bit-tech.net/showthread.php?t=160383
rainwulf's Project Monolith @ bit-tech
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