Phoronix posted a quick test of OpenGL in Mac OS X 10.6.5
In August we reviewed Apple's Enhanced OpenGL Stack that was introduced as an update to Mac OS X 10.6.4. This Snow Leopard Graphics Update 1.0 came out following Valve bringing Steam and its games to Mac OS X and collaboration via Apple, NVIDIA, and ATI/AMD to better the Mac OS X graphics stack with supporting new OpenGL extensions and making other optimizations, such as adding OpenGL occlusion queries support. While we tested this major Apple graphics update under a NVIDIA MCP79-based Mac Mini, which is a GPU that did not receive as many performance optimizations as those higher-end NVIDIA ASICs in newer Macs, the performance improvements were noticeable in some cases. In select games, however, Ubuntu Linux with NVIDIA's proprietary driver was still faster than Mac OS X 10.6.4 + SLGU. With Apple having released Mac OS X 10.6.5 this week that "addresses stability and performance of graphics applications and games," among other changes, we have carried out some new Mac OS X benchmarks seeing how the performance has changed, if at all.A Quick Test Of OpenGL In Mac OS X 10.6.5