well I've looked all over on what power supply fits in a Dimension 9150 that is 600watt and above, and so far I've gotten no answers. It's driving me crazy. I know if I buy another computer at some time (which I can't afford) I'm not going with dell doing anything with them is more complicated then I ever imagined. But then again when I got this computer I didn't think I was going to get into 3d graphics.