This is the 9th biggest supercomputer in the world, MareNostrum. It also happens to be the most gorgeous supercomputer in the world, installed in a former chapel with acres of glass and steel. It belongs to the Barcelona Supercomputing Center and is polished daily by hundreds of groveling grad students. Probably.
It has 10,240 CPUs, 20TB of RAM, 280TB of disk storage and runs on SUSE Linux. It can compute at 62.63 teraflops, with a peak performance of 94.21 teraflops, making it the most powerful computer in Europe.