With World in Conflict, the Radeons show, time and again, their fragility once antialiasing is activated, with, fluctuating performances depending on the cards and the resolutions. We don't measure a real upper hand of the HD 3870 over the HD 2900 XT. The superiority of the 640 MB version of the 8800 GTS compared to the 320 MB version is, however, quite pronounced, especially with filters enabled.