An article written by Richard Koman from newsfactor.com talks about the performance increases that everyone will see once SP3 for Windows XP is released. The company Devil Mountain Software, has recently done tests on Windows Vista in regards to the up-coming release of SP1. The testing concluded:

"The hoped-for performance fixes that Microsoft has been hinting at never materialized," the testers reported. "Vista + SP1 is no faster" than out-of-the-box Vista, they said.