To our surprise, the RADEON X800 XL isn’t very successful in Perimeter, although ATI’s RADEON X800 cards usually win this test through their high pixel shader performance. The more expensive RADEON X800 XT is the only competitor to the GeForce 6800 GT, while the RADEON X800 XL beats the GeForce 6800.
Strangely enough, nothing changed when we enabled full-screen antialiasing and anisotropic filtering. The GeForce 6800 GT is among the leaders still. We rechecked these results, but NVIDIA’s card was always the winner of this test.