All you wanted to know about performance if you are upgrading the affordable Mac Mini to the affordable Snow Leopard.
The performance improvements we encountered in Mac OS X 10.6 through our benchmarks we were quite astonishing. Thanks to the introduction of the Grand Central Dispatch, 64-bit migration, OpenCL support (to largely benefit future applications), and other refinements made “under the hood” of Snow Leopard, this is one hell of a fast operating system. We were quite amazed with multiple tests exhibiting nearly 50% performance boosts over Mac OS X 10.5.8. While that was an extreme improvement, many other tests ran 10~16% faster.