I switched from a ATI Radeon 8500 Mac Edition to an ATI Radeon 9000 Mac edition to cut fan noise (no fan) and to marginally speed up the G-Force Pro Visulizer when I am playing iTunes for extended periods. It cured the jerky action. Mike >I have noticed several postings about adding new video cards and the >associated problems. My G4-1GHz-AGP came with the ATY,Rage128Pro. Since I >do not play games on the computer, is there any need for an upgraded card? >What's wrong with the standard G4 video card? > >Dick -- Almost never pointless.