My setup, no shiny lights, maximum OC.
Monitor left and right 1920*1080 24 inch.
Center monitor is a 34um95 from LG with 3440*1440 34 inch. Very happy with this one.
My slave system has a quadcore i7 3770k clocked @4.2 Ghz, 32Gb ram CL9 1866Mhz, GTX680 4Gb, aircooled and is connected to the screen to the left.
My master system has hexacore i7 3930k clocked @4.6Ghz, 32Gb Ram CL9 2133Mhz, 2x GTX 780 2Gb sli, watercooled and connected to the screen in the center & right.
Using input director to control everything with one mouse & keyboard. Games are loaded from SSDs into a ramdrive to achieve nonexistant loading times. (Reading speeds of 8500Mb/sec, no joke)
Main pc runs 15 clients @ 50 fps capped.
Slave pc runs another 10 clients @ 50 fps capped.
Also got a laptop that can run 10 clients but that doesn't matter in this current setup.