Welp, I have a question. I'm looking to build a i5 750 under water with also the MOSFETS under water. An ASUS P7P55D Deluxe is the motherboard of choice. EK makes a MOSFET waterblock for the ASUS P7 series boards. A Swiftech Apogee XT is will be the CPU block. For a radiator, I'm pretty limited due to the limitations of the Tempest EVO. I'm thinking of going with a Koolance 2x140 radiator since it will be the biggest rad that will fit length-horizontal wise. It's thin enough to fit and the Tempest EVO's 140mm fans that sit up top should do a decent job pulling air from the rad. Using a high flow pump, do you guys think one radiator will keep everything decently cool? I was thinking of adding a single 120mm rad in the lower front but my goal is to keep temps below 65c at full load at 4GHz at 1.38v. Here is my case that everything will be going into: The only thing I'm really unsure about is what pump to go with.