So, AMD’s ownership of ATI now means that anywhere you once put the graphics chip-maker’s products, you’ll now be putting in AMD . In this case, it’s the newly available ATI Radeon X1900 G5 Mac Edition. The card is your best option for delivering high-end 3D graphics performance to an older Power Mac desktop with a x16 PCI Express slot. For $349, you get 36 pixel shader processors, 256MB of VRAM and more than 37GB per second of memory bandwidth. And with two DVI ports it’s got good power for driving two 30-inch Apple Cinema HD Displays.
ATI Radeon X1900 G5 Mac Edition [product page]