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Japan's K Computer took over first place as the top-performing supercomputer in the world as determined by the Top500 Supercomputing List. The K Computer, which is housed at the Riken Advanced Institute for Computational Science in Kobe, has 672 computer racks and 68,544 CPUs. This system achieved a LINPACK benchmark performance of 8.162 petaflops (quadrillion floating-point operations per second).
But this supercomputer isn't even finished. That should happen in November 2012 when it is expected to house more than 800 computer racks and exceed 10 petaflops.