depends on how extreme you want to go sony, if you check over in prime81's thread he's using a new type of air cooler that has a 50watt pelt in it stock, but he's uped the pelt to around 168ish with the stock controller and his normal psu so that would be an option, another option is coolitsystems freezone systems, which I have heard have high pump failures, but it is possible that they have fixed it, I've never used it myself so I'm not gonna say anything bad about their products I'm just stating what I've heard. Their systems are a self contained water cooling system with a pelt cooler, and from the reviews I've read do a pretty good job at what they do.