I am gonna get a graphics card soon, but I don't know which one to get. My machine is kind of old. It only has PCI(NOT PCI Express) slots and a single AGP 1x/2x/4x slot. From what I read though, most 8x cards will work in a 4x slot though(they say they are 4x as well on the box). The thing is that I don't know squat about which one to get. I was considering getting a Geforce 6800, as while it isn't the latest and greatest, it appears it should work on my set up(I say appears as some places say it has PCI Express support). For a non PCI Express system, is the geforce 6800 decent or is there something better?