I was gifted this motherboard: http://www.asrock.com/mb/overview.asp?Model=K10N78M PRO I need to find a compatible graphics card and am at a total loss at to what I can safety get. I want at least 512MB but would prefer over a 1GB card. Also I can disable the integrated graphics through the bios in favor of a dedicated. They *don't* need to work in tandem, I don't think. Any assistance in this matter is appreciated.