AnandTech's Windows Vista Performance Guide
AnandTech has published a Windows Vista Performance Guide that is a very good read. If you want details and benchmarks on SuperFetch, ReadyBoost, ReadyDrive, 64 bit, etc. this article is for you. It does a good job of explaining the technologies and benchmarks each of the different options. Overall it is a very positive review but they don't pull any punches in the areas that could use further improvement.