Cal Evans has run some initial benchmarks on the newly released Windows PHP cache accelerator (see here) and the results are promising.

I do not pretend that this benchmark will mirror real-world results. It is simply an indicator that WinCache may improve the performance of your application because it did in the case of this one. Ok, so now we are clear about what we are seeing here. it's not a guarantee, it's just a pointer in the right direction. Let me take you through what I did and how I tested.

His tests were run on a machine with Windows 7, MySQL, the Web Platform Installer and PHP. He walks through the steps he followed to prepare the environment and to run his tests on a sample WordPress install both with and without the cache enabled. Check out his entry for the results!