On 9/3/05 11:38 AM, Eugene <list-themacintoshguy at fsck.net> wrote: > Quartz 2D is the API used by an application to draw its contents > to a window, using the CPU to do the commands. Quartz 2D Extreme > sends these drawing commands to the GPU, letting the video card do > what it does best and off-loading the CPU to do other tasks. So in > general, "... Extreme" means that the graphics stuff (specifically, > OpenGL commands) been moved from the slower, general-purpose CPU to > the faster, special-purpose GPU. Of course, all this works only on > supported video cards. Actually, Quartz 2D Extreme is not enabled on any Macs yet. See http://www.macosxhints.com/article.php?story=2005050121260474 for more information on how to enable it. I have not personally done this, so it is not a recommendation, just an FYI.