I have a Gen 4 Dell XPS (Pentium 4, 2gb Ram, Nvidia 6800GTO) I want to get a new video card in hopes to get another year or so out of this computer. Being a few years old, I know this is not a SLI motherboard. If I buy a SLI video card will it still work in my non SLI mobo? I'm looking at the BFG GeForce 7950GT http://www.newegg.com/Product/Product.aspx?Item=N82E16814143090