Actually, the OEM G5 FX5200 can be modified to work in a G4 system - it's a really ugly and dangerous mod, but it is certainly doable. I doubt this modification would work for any other AGP Pro cards though, as they probably actually use the additional power the slot can provide.
It's a lot of work, IMO, for a mediocre card. The 9600XT is about the same price on the secondary market, but is much easier to modify(just tape pins 3 and 11 unless you want to power an ADC display) and is also a much better card.
I have actually decided on a FireGL X3 X800 XT Flashed card. However if i cannot obtain that by the time i have the money for it ill get the 9600 or any other card i can that will fit. And ill just take a screw driver and "break" the connection on pins 3 and 11 like in that article. Question though: Is the pins 3 and 11 on the front (heatsink) side of the card or the back side?
Actually, the OEM G5 FX5200 can be modified to work in a G4 system - it's a really ugly and dangerous mod, but it is certainly doable. I doubt this modification would work for any other AGP Pro cards though, as they probably actually use the additional power the slot can provide.