NFSU2 on a TNT2?
And I am finding it difficult to run at 800x600 with Motion Blur on a FX5600U. Are you sure the game can be played at 640x480 with all effects turned off? Plus, would anyone really want to play it that way? I would say the best NFS game to stop at would be Porsche Unleashed. The best part about the Underground series IS the graphics. As for Action games, you can try Max Payne, Quake II, Quake III Arena, RtCW, etc.