see, I was just wondering where the stereotypical misconceptions of vista came from, now you made such statement.
who told you vista need 3GHz and 4G RAM? Or you just saying it and bet nobody here know anything about vista? LOL, I have hands-on with 3 Vista machines, from 1G RAM to 2G RAM, from 3GHz AMD Athlon64x2 to Intel CoreDuo, to Celeron 1.8Ghz, Vista runs FINE.
Apparently, you haven't touched enough Vista boxes to truly know what a technician's nightmare it is. The security alone is a nightmare to circumvent in order just to get a spyware/malware infected Vista box clean. Permissions everywhere....meaning that if you or a Trojan changes permissions on a registry key or system file, you're in for a boatload of hidden problems that creep up weeks later.
Vista (32-bit) does not run on anything very well unless you're looking at a mid to high range Core 2, Xeon, AMD Athlon 64 or Phenom and at least 3GB of RAM. Performance seems to be a bit better on the Vista 64-bit versions, but that leaves out everyone still running high-end P4, Core Duo or Athlon XP processors.
Low battery consumption on a notebook? Not if it is paging the hell out of the drive because the Microsoft VM solution is inefficient. Reminds me of the VM management used by legacy Apple operating systems from the late 90's.
Vista is a pig. Microsoft needs to pull an Apple and tell their legacy users that your 15 year old software isn't gonna work with our next OS. You're either in spec or you're left out. Legacy compatibility is killing security and performance in their newer products. While I know nearly all Microsoft apps are pigs (i.e. Office Mac 2008), they can stand to lose a few pounds by cutting the cord to those who feel their copy of Dbase 3 should still run on Windows Vista.