I recently bought a new computer from Dell and the video card I wound up with at the time was an ATI 128 mb x800 SE. Well, the computer showed up yesterday and the card installed is an Nvidia 6800. Looking on Dell's site, the only possible Nvidia card they are offering with my model (Dimension 8400) is the 256 mb 6800 GTO. How do I go about determining which 6800 model I have? I don't know anything about video cards....did I get a bargain or do I need to call and complain?