Stealth rig at work. Only 1400 kh/s for now. A 7970 and a pair of 5850's, soon to be joined by a 7950. That stand is an old PictureTel unit I was given that I gutted.  Tons of room in these things and designed for cooling.  There's also a Logitec sub in the bottom compartment as the Unit's "Clark Kent" theme is my jukebox/workstation.