I'm buying a new 12 core, and I'm giving my son my old dual quad core 2008. We upgraded the ram, and put an Apple branded ATI 5770 in it. He wants to run Windows on it for gaming. Will that card work alright on Windows side of things. I know If we would have bought a Windows card, that would not run in OSX. He won't need to buy another graphics card flashed for Windows will he?