Touted as the operating system that will change the way we compute, Microsoft Windows Vista promises a host of innovative features that will improve the overall system performance. Some of these impressive features include SuperFetch, ReadyBoost, and ReadyDrive. In this article, we will superficially look at SuperFetch and ReadyDrive, while discussing the coolest feature ReadyBoost in detail. All of these features are implemented to enhance the I/O (Input/Output) performance, and thereby improve system responsiveness.