they also mention that it's most likely a software bug, only present with ATI on using the DX10 path. Don't see what else could be added, it was not a single bugged run, it did it every time.
wait... what? it's not a poor logic, it's just mentioning the performance effect going from XP to Vista. Nothing more, nothing less. CF scaling fails in XP for two games, but even without those performance overall is better on Vista compared to XP for ATI. NVIDIA is not bad either, where XP and Vista performance are basically on par. Only when AA is thrown in the mix you really see a nice boost under Vista using ATI (-20% in XP, -10% in Vista performance hit going to 4xAA);
only the facts are mentioned, and if you are a gamer, you are better of with Vista when using ATI, no poor logic there...





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