The latest release.

Snow Leopard 10.6.7 came out yesterday, with bug fixes and security enhancements, and before you could say ‘Hackintosh’ I had it installed on the HackPro.

It’s worth the upgrade. Running in 64-bit mode here is the Geekbench (OS performance as reflected in CPU and RAM throughput – no disk factors, so the SSD I have recently installed is irrelevant to comparisons) report:

Snow Leopard 10.6.7

Here is 10.6.6 with the same configuration:

Snow Leopard 10.6.6

That’s 2.4% faster. Not enough to notice, but nice to know that the newer version is not the victim of performance drag from code bloat. The biggest component of the overall change is in the memory performance result which is 8.0% faster. Nice code optimization, Apple!

On the 2010 MacBook Air (mine is the 11″ with the base spec and minimum RAM) the change in speed is +5%. Once again, not noticeable but nice to know.