*Spelled "Choose," wrong too* Through overclocking, benching etc, I've learned the long way that my psu in inadequate. It went poof. I know a little about psu's, more so about the hardware that they can work with because of simple google searches. I'll give you a list of items I have in my current system. core i7 965. Was at 4.1 ghz Asus Rampage 2 12 Gigs of ddr3 G skill SSD 128 GB G80 ultra (Been sitting on my hands about upgrading to two 4870 x2's 6 led case fans 2 drives I'm planning on doing some aftermarket stuff(well some more) in terms of a 220 watt peltier build for my cpu( I may get a dedicated psu for it.) Along with a complete watercooling loop (cpu+gpu's maybe NB, probably not though) http://www.newegg.com/Product/Productcompare.aspx?Submit=ENE&N=2010320058%20113142550&StoreType=-1&CompareItemList=N82E16817153055%2cN82E16817256038%2cN82E16817153054%2cN82E16817256041&page=2&bop=And Choices of psu's I'm looking at. My issues are... 1. Having enough power for everything I want to connect 2. The listing of 12v rails are 1-4 or 6 etc. Some give more power than others. How am I to determine the difference. 3.Does efficiency rating effect constant power output?