I just bought a brand new system right before the upgrade/rebate program was announced so I'm in Windows XP right now, though I have tested Vista RC1 and other builds.

I am considering trying Vista on this machine:

2-Intel Core Duo 2, 2394MHz
2GB DDRAM
500MB HD (2x 250GB RAID-0 array)
Nvidia GeForce 7950 GX2 (1GB Dual Core GPU) PCI-E


My old system ran Vista and had:

Intel Pentium 4 3.06ghz
1GB RAM
128MB GeForce 6600 GT AGP
160GB HD

Vista also ran on my laptop (without Aero functioning):

Intel Centrino Mobile M
2GB RAM
Intel Integrated Graphics Accelerator
80GB HD


I may wait until the final release of Vista to try it on my new machine. I have access to virtualization software and I might use this simply to test it out in Windows XP