Gotta replace AGP graphics card MPro 6850 what's suitable?

[DaveG11th]

It's time to replace the video card in my dual Xeon 6850 22U

Running Windows XP pro

I know the original came with a variety of cards including
-- Wildcat III 6110
-- ATI Fire GL 8800
-- nvidia Quadro4 900XGL

Anyone know what other AGP cards will work? Maybe something a bit younger than the quoted ones?

Thanks,
Dave