Hi there, My early 2008 model Mac pro's memory card just failed. Looked online and couldn't find anywhere to buy a new one. Lots on eBay but would prefer new. Apple recommends the following: ATI Radeon HD 2600 XT NVIDIA GeForce 8800 GT (part number 630-9191 or 630-9897) NVIDIA Quadro FX 5600 ATI Radeon HD 4870, offered as an upgrade kit but does anyone else know if other graphics cards (more recent) are also compatible? thanks for the help!