This is my new and second computer which I am working right now. I have collected several parts from the primary rig and soon will play around with those here. I am looking at Core i7 950 at 4.2GHz along with a R3E waterblock. I also want to configure 4 8800 ultras (3 will be in SLI and one will be as physics). What my intention is to complete the entire configuration in one full loop but with the use of very small radiator if possible. Currenrly I have 2 120x4 (Black Ice GTX480) and 2 120x3 (Black Ice GTX360). Is it possible to run a Whole loop with single radiator or should I need to add 2.