1 Ghz G4 Cube, 100 Mhz Bus, 1.5 GB RAM, Radeon 7500
VPC 7.0 w/ Windows 2000 Advanced Server, Latest Service Pack (I think 7)
Very fast, on a 22" Apple Display running at full screen mode, the start menu and other windows redraw very fast and the whole system is much more responsive. I wish I had some hard data but let's just say it's finally useable. I haven't tried any other forms of Windows though and I have heard that Anything after Windows 2000 (XP, XP Pro, Server 2003, etc.) is very slow and sluggish on machines like ours.