I just got the ATI radeon x800 xl in PCI-E, I'm running on a multiprocessor 3.0ghz hyperthreading PC with a gig of ram. My concern is with the graphics, the performance is great little to no lag, but it's just kind of choppy I can't explain it, such as doom 3 my character is fine, but the surroundings are kinda choppy, like you can see random lines that kind of flash... I guess lol if you understand what I'm saying could you suggest anything for me.