To date, the fastest supercomputer in the world is IBM Blue Gene supercomputer, measuring 70.72 TFLOPS. A speed test on 24th March 2005 demonstrated that the performance was rated at 135.5 TFLOPS.
Blue Gene is made up of 32768 processors, arranged in 32 racks, each rack holding 1024 processors. The processor used is 0.7 GHz PowerPC 440.
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