I know that it supports one x16 PCIe and one x1 PCIe card.
The motherboard is an Intel 925ex motherboard.
As far as budget is concerned, I'm not willing to spend top dollar. I'm looking for a cost-efficient solution that will run COD 4 smoothly.
If ur really low on the budget, then go slowly...start with the videocard, then motherbaord, then processor; buying it one by one. If u happen to get satisfied by buying the video card alone; then thats good.