The Oak Ridge National Laboratory is again home to the computer system capable of handling the most data of any in the world. The fastest supercomputers are:
1. Titan Cray XK47 at Oak Ridge National Laboratory, 17.59 petaflops per second
2. Sequoia BlueGene/Q at Lawrence Livermore National Laboratory, 16.33 petaflops per second
3. Fujitsu's K computer at the RIKEN Advanced Institute for Computational Science in Kobe, Japan, 10.51 petaflops per second
4. The Mira BlueGene/Q computer at Argonne National Laboratory in Lemont, Ill., 8.16 petaflops per second.
5. The JUQUEEN BlueGene/Q computer at the Forschungszentrum Juelich in Germany, 4.14 petaflops per second.
Source: Top 500 Superfund List, Waibstadt-Daisbach, Germany. A petaflop is a measure of a computer's processing speed and can be expressed as a thousand trillion floating point operations per second.