Yo. I'm building a new high end computer and I have a question about the psu. I am going to be running two psu's. One on the top and one on the bottom. The bottom one is where i'm going to hook up my motherboards power, along with two of my graphics cards. On the top one I am going to hook up my other two graphics cards along with my water cooling system and all the other small power plugs for the computer. When I hit the power button will they both power up at the same time. Or will just the bottom one because its hooked up to my motherboard. If you could help me get a better understanding of this that would be great.