I have the 2407 WFP one running with a SLi of 7900GTX. A single card wont be enough to play most of the games in confortable condition. With a single 7900GTX, i was running LFS at 160fps with my old 19" LCD, now with my SLI and my 24", I run LFS at 50-70fps. So with that you can already have an idea. Dont forget that i'm running in 1920x1200 and not in 2506x1600 ...
I can tell that you'll need a SLI or a 7950GX2 at least.