The Temjin TJ12 is a concept case by SilverStone. This case is so big you can up to plug 6 dual-slot cards at the same time. In the demo at Computex 2011, four GeForce GTX 480 and two GTX 580 were in the case. SilverStone has designed a special backplane with PCI-Express slots in order to plug all the graphics cards.
This case can handle any motherboards even the largest ones like EVGA’s SR-2. There’s also room for a second PSU if the fist one is not enough powerful.
A perfect case for HPC / GPU computing!