HEXUS has posted a review on the Crucial RADEON X850 XT 256MB Video Card

There's little doubt that ATI's RADEON X850 XT graphics card provides decent performance in the high-end sector. Our benchmarks have illustrated that it performs at around the same kind of pace as a GeForce 6800 Ultra, and around 5% slower than ATI's own X850 XT Platinum Edition. Performance, then, isn't really a concern.

Crucial RADEON X850 XT 256MB Video Card