AGP videocards for G5

Christopher Overstreet's icon

OK so it is not worth selling my AGP powermac G5 (and its one of the fastest
machines that can run OS9 in case I want to do an NN piece someday) so I am
finally upgrading the videocard. These are the two choices in the budget:

ATi Radeon 9800XT VRAM : 256MB 256-bit DDR
OR
Mac nVidia Geforce 6800 GT 256MB Video Card G4 G5 AGP

Which would be a better jitter performer?

Thanks,
Christopher Overstreet