Think of the Radeon 7000 as an "enhanced" Rage 128, but running almost as cool. 2D is the same, but 3D stuff/games is definately snappier. I think with the ATI control panel installed it also has some DVD/MPEG hardware decoding support under OS 8/9. The AGP Radeon 7500 is a good cheap upgrade for the G4 Cube, provided you put a fan on it or have some nearby airflow.