How many Multi-boxers use only 1 system?

[PineBeach]

I run five instances of wow on one machine. I turn all the graphics settings to low, except the view distance and envrionment detail.

32" Monitor
Intel Quad Core 2.6Ghz
4GB RAM
PNY Nvidia GeForce 9600 GT 1GB
HotKeyNet

I have the screen set to 2560 x 1600 and each window set to 720x576, then I use HKN to resize and position the windows. Because the screen is set to 2560 x 1600 all the graphics look really sharp, though a little squashed when a window is maximised. If I'm going to play with one window maximised for extended periods I minimize the others to reduce the strain on the system.