So my dads friend built me a computer long time ago, and it has an intel core i2 q9400 quad core, and the motherboard model is of428d. I want to stick the gtx 660 I found on ebay in my computer, but I'm not sure if it's compatible with the board. I'm also certain that my psu isnt good enough, but I have no idea on what psu I have. Any replies are very appreciated.