Hi all, I've done quite research on upgrading video card on this forum but I couldn't find satisfactory answer so I am writing one. My understanding so far is that any PCIe video card will work on Windows boot camp but they are not necessarily compatible with OSX. Also, in order to make a PCIe video card compatible to Mac, I understand i need to flash the video card. What are the successful video cards you know that can be installed in pre-Nehalem 2008 mac pro? By this i mean any video cards that are compatible with mac osx. My card is ATI x1900 and its pretty outdated. Any advise or corrections to my understanding would be appreciated. Thanks!