Anand Lal Shimpi takes an in-depth look at Apple’s new Mac OS X Tiger operating system for AnandTech. It’s a very thorough review and worth taking the time to read it through. One issue in particular stood out. Anand Lal Shimpi writes:
“Quartz 2D Extreme, the complete handling of UI rendering and compositing by the GPU, is not enabled in the release version of OS X Tiger. As such, users of Quartz 2D Extreme supported GPUs gain no performance benefits in Tiger as the CPU is still left to handle all UI rendering and the GPU handles all compositing after the CPU renders the interfaces to textures in AGP memory. The only benefit modern day GPUs offer in Tiger (other than their improved performance in 3D applications) is that there are certain visual effects that are only enabled if you have a GPU that supports Tiger’s Core Image. For example, when dropping a widget onto the Dashboard, you get a very nice ripply-wave effect on GPUs that support Core Image; and on those that don’t, there’s no effect. But from a performance standpoint, there’s no benefit to either ATI’s Radeon X800 XT Mac Edition or NVIDIA’s GeForce 6800 Ultra DDL.”
Full article, highly recommended along with the Ars Technica review listed below, here.
Related MacDailyNews articles:
Ars Technica: Mac OS X Tiger ‘at least twice as significant as any single past update’ – April 28, 2005