GPU fails to accelerate despite GPU physx enabled because APEX files on any game may be "bad coded" and fault but... and new CPU AMD x6 may be fault. after I investigated the games/samples/demos. GAMES: -Alice Madness Returns - http://forums.guru3d.com/showthread.php?t=346408 -Dark Void - http://forums.guru3d.com/showthread.php?t=346074 DEMO: New GPU PhysX benchmark released for online shooter Mars - http://physxinfo.com/news/5837/new-gpu-physx-benchmark-released-for-online-shooter-mars/ - you look "nuninho" on 1st page. can you fix performance issue? NOTE: I got normal performance in games (mafia 2, batman AA), nvidia physx demos, samples (Star Tales, JX3 benchmark...) but I weird these games that have APEX files.