Most likely I'm getting a BFG 7800GTX video card to use on my AMD 3500+ system (with 1GB ram).Will my cpu severely limit the video card performance? I hope not because I really can't afford a new ...

Right now I have 2 7900GT OC BFG cards in an SLI setup. I have 400$ sitting on my credit card. I could throw it into my 401k but I want to buy a new video ...