What types of graphics cards suitable for my Apple Power Mac G5/2.0 Dual Processor (PCI-X)?

Currently it uses ATI Radeon 9600 Pro with 64 MB of DDR SD-RAM video card which I feels it's too slow.



This is my Power Mac G5 specs link:



http://www.everymac.com/systems/apple/powermac_g5/stats/powermac_g5_2.0_dp.html|||ATI Radeon 9650 with 256MB DDR SDRAM, one single-link and one dual-link DVI port