China's Tianhe-2 supercomputer has reclaimed the top spot for speed, almost twice as fast as the previous reigning champion, the US's Titan. Tianhe-2, unsurprisingly the follow-up to the Tianhe-1A which grabbed pole position back in 2010, is capable of 33.86 petaflops per second of processing, ranking organization TOP500 confirms, far ahead of the 17.59 petaflops per second Titan is capable of.
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