For some months I've been meaning to try out WattOS, an Ubuntu derivative that claims to do more than providing simple desktop theme changes and other high-level customizations. It seeks to provide a simple and fast desktop that's also said to conserve more power and run better on older hardware, but is this actually the case? Here are benchmarks of WattOS R4 compared to the upstream Ubuntu 11.04 release from which it's derived, and the numbers are quite revealing.