There's no way performance should be worse, no matter what the video card is. I had a TNT with a P2-400 and was getting 30+ FPS with UT. Unreal, being a less complex game, should be even faster. The 2.08s may be the fastest for most games, but with Unreal games being so quirky, maybe you should give the newer ones a try. I'm using 5.32s on a geforce SDR, still on the P2-400 (for now) with the smoothness I described before.