[citation][nom]alextheblue[/nom]There are some additional performance improvements and other odds and ends too. From the typical end user's point of view you'll probably only really notice the UI and UAC improvements. Performance is up a bit but probably only diehard framerate junkies will notice. It's not night-and-day earthshattering differences. So yes, if you already have Vista fully up to date, with good drivers that don't crash, there isn't much incentive to upgrade to 7.At least for the home user. For business/IT purposes, there's a LOT of very noticeable improvements in Win7. There's better file searching, better remote access, much improvement management (scripting, troubleshooting, etc), security enhancements (including stuff like applocker, better smart card support, native biometrics, etc), and deployment improvements (dynamic driver provisioning comes to mind - smaller images, and fewer images needed. just have it nab drivers off the server). There's probably a lot more stuff I'm not thinking of.A lot of those features are exclusive to Enterprise or Server editions, of course. They're useless for a typical home user, hence the removal of the features and lower price tag.[/citation]
Biggest advantage of 7 over Vista is all the Windows services are 64-bit under 7. Whereas they hadn't finished rewriting them under Vista.
Vista was a fine OS from the beginning you just needed to give it 64-bit sized resources. A dual core processor can run 7 and Vista but a quad core runs better. They really are helped by RAM too, I would never attempt either in under 2gb I prefer 4-8gb.