[G4] Video upgrades for PowerMac G4 dual

[David Gardner]

I have a PowerMac G4 dual 500mhz with the standard ATI Rage 128 AGP card 
with a measly 16mb video RAM, which is pretty inadequate. The 
recommended upgrade is to the ATI Radeon 9000 Pro Mac Edition, but those 
prices seem pretty high, as well as it being pretty rare, especially the 
128mb version.

Is it possible to forget the AGP slot completely and run a primary video 
card in one of the PCI slots instead, and if so, which higher end card 
would work best in this system?