In Pictures: The 10 most powerful supercomputers o...
No. 4: Mira
Also using the Blue Gene/Q architecture is Mira, of the Department of Energy's Argonne National Laboratories. However, it packs substantially more cores than JUQUEEN -- 786,432, to be exact -- in return for a nearly doubled performance return of 8.16 petaflops.
In Pictures: The 10 most powerful supercomputers on the planet