BEST Mac Graphics Cards? (AGP8-PCI)

[gwandoma]

Opinions All, had a NVIDIA GeForce 6800 Ultra DDL, it broke. Despite tons of research i cant find a comparable card that can run Two dell 24" ultra-sharps (DVI/AGP) and keep AfterEffects, Aperture, CS3, 3D smoothly running on a AGP8x Chip set or PCI. Am i stuck buying another 6800 or is there something equal or lesser price/performance that i have any options




2Ghz DP G5 w/ 3x PCI and 1 AGP8x (2GB RAM)

Exact Model:
http://www.everymac.com/systems/apple/powermac_g5/stats/powermac_g5_dual_2.0.html

2 x UltraSharp 2407WFP 24-inch Wides (Dual Monitors)

http://accessories.us.dell.com/sna/productdetail.aspx?c=us&l=en&s=dhs&cs=19&sku=320-4335