The University of Antwerp gave everyone a chuckle last year when they built a quaint little supercomputer made out of four high end Nvidia GPUs. Apparently, that was just a practice run. The same group has now constructed a 13 GPU monster of a supercomputer called Fastra II.
The rig contains six dual-GPU Nvidia GTX295 cards and a single GTX275. As you can imagine, there were a few issues getting the whole system up and running. Motherboard manufacturers don’t usually anticipate someone needing to run 13 GPU cores. With a little persistence and a custom BIOS from ASUS, the tiny supercomputer was up and running. The whole affair cost only 6000 Euros, and is capable of twelve teraflops.
The value per teraflop is high considering most conventional supercomputers cost millions of dollars to build and run. You can check out some possible applications and crazy benchmarks here.