3DVelocity look at one of ATi's current high-end cards, excluding the "Phantom Edition" that is, the X850XT.

At the very top of the Crucial graphics portfolio sits a genuine behemoth of a card, the Radeon X850 XT. Based on the R480 VPU , this chip boasts 160 million transistors and 16 pipelines , 256MB of DDR3, a 520MHz VPU and 540MHz DDR3, or in short, masses of pixel pushing power. Yes we say that with every new generation of graphics chip, but by today's standards this thing really shifts some pixel plastered polygons.

Crucial RADEON X850 XT 256MB PCI Express