i have the same rig , i run a second psu with 8 80mm fans to cool the entire case, i rigged up the setup shown in the picture above but i added a toggle switch and ran it through the front of a 5 1/2 bay so i can just toggle the second psu on when i power on the computer to get everything going at once. There is a way to wire up the 2nd psu to power on with the 1st one but i didnt want to cut wires on my atx cord for the main psu which is the way it would have to be done