I am wanting to totally upgrade my B&W G3 Rev. A. So what I want to ask is will there be any noticable difference between a 1Ghz G3 and a 1Ghz G4? I currently am leaning toward the G3 because of the price. I will be maxing out the RAM. Also what is the best video card that these machines can use? I will also be buying a SATA Hard drive controler does anyone have any recomendations of a particular card? Is there any other useful upgrades that I haven't thought of. and if it matters for the CPU I will be dual booting 10.3.9 and OS 9.2.2.