I'm building a new rig from old parts. I have a q6600, a gigabyte mobo, 4 GB of ram and an amd 6950 and a couple of hdds. I'm putting this together for my kids to have a (rather large) media center hooked up to the living room TV. Theyll basically play the Sims 4, Dirt, titanfall and some indi games on Steam. I need a power supply. The cheaper the better, but probably 600w or so. Anyone have suggestions? I haven't bought one in years. Any other must haves for a rig like this?