Hi, I used to get 650FPS with glxgears before I added this option (at the end ofthis mail ) to my xorg.conf. Now I get 1100FPS. Is it true that this option increased the FPS of my card? I am using "ATI Rage 128 Pro" as video card. Is glxgears reliable for such tests? Option "EnablePageFlip" "true" Thanks and regards from VJ