If you buy the retail version, it will! That version of the 9800 is specifically made for the G4 Macs.
I am waiting for mine to finally come to Holland.... I also have the Dual 1.25 w/ FW 800.
The difference between the RETAIL 9800 and the OEM 9800:
Retail: AGP 4x, DVI and VGA
OEM: AGP 8x, DVI and ADC
So if you have an ADC monitor, you will need a DVI to ADC adaptor aswell, remember that....