I saw this article yesterday at MaximumPC.com in reviewing/benchmarking Windows 7:
The good news is that it appears to be much faster than Vista in many ways, and even faster than XP in some ways. The installation discs include both 32-bit and 64-bit, too.
I know we've got folks here (like Anna Wood) who are already experimenting with this new operating system and probably have learned a lot about it already. I'm still running my old copy of XP, but I plan to skip Vista entirely and jump to "7" near the new year.
Anyone have any experience they'd like to share with this?