My four-year-old Quicksilver G4 is getting a bit long in the tooth. I've upgraded its graphics card to an nVidia GeForce 4ti, and it runs respectably on games such as Jedi Knight, Halo, and the new Star Wars Battlefront. My question is this: if I take the plunge and get a stock dual 2.0 GHz G5 with the Radeon 9600, what improvements will I see in graphics performance on games of this nature?