I have 3 Computers:
PowerMac G4 (powerPC) 1.25 ghz with 512 Megs of ram, 40 gig hard drive, running Mac OSX 4.0 Tiger
Pentium 4 3.0 GHZ with 512 Megs of RAM and a Ati 9200, 40 gig hard drive, running Ubuntu Linux 6.06
Intel Celeron 900 Mhz with 512 Megs of RAM and a Ati 9200, two 80 gig hard drives, and running WinXP
I have a 20.1 inch Viewsonic Widescreen LCD monitor that can do HD at 720p. It's hooked up to my Celeron.
The other monitor i ahve is like a 15" LCD that's hooked up to both my PowerMac and my P4 via a KVM switch