Hey guys, pretty similar situation here. I had an Antec 450, 12V rails would be around 11.72-11.78 when OC'ing to 3.4-3.5ghz. Switched to an Enermax 460 (refurb from Newegg), and now my 12V rails are fixed at 12.04, whether or not I OC or not. I would run some benchmarks if I were you. Another idea would be to get some PC4000 RAM if you are that concerned about 1:1 ratio. 512mb Kingston HyperX PC4000 @ bestbuy for $99 (after rebate), have to get two sticks to go dual channel though.