you could always get a better card now and when you upgrade, if you do, in like a year you can use it for that system and buy another of the same card and run em both side by side. Saves some money down the road instead of buyin a lowend now and 2 more later if you want to go for that. I'd say go with the 4850 for about $130 and a couple months from now theyll probably 2/3's the price. That's if your planning to upgrade. P4's aren't quite up to date but i'm in the same boat as you i'm still sittin on Athlon 3400 and i can't play crap on it. Go with a decent card now and push it to its fullest until you get a better system