Japanese Supercomputer Now No. 1 in World Japan knocks China out of top spot By Evann Gastaldo, Newser Staff Posted Jun 20, 2011 8:21 AM CDT 9 comments Comments Japan's national institute Riken president shakes hands with Fujitsu chairman as they announced that their joint development 'K Computer' became the world's fastest supercomputer on June 20, 2011. (Getty Images) (Newser) – Japan is at the top of the computer heap for the first time in seven years, now that Fujitsu Co.’s supercomputer has bested that of a Chinese competitor. The “K Computer,” funded by the Japanese government, is the best-performing machine in the world, capable of handling more than 8 quadrillion (that's 8,000 trillion) calculations per second. Once completed next year, it will be able to perform 10 quadrillion calculations per second, the Wall Street Journal reports. Fujitsu says the K Computer has so much computing muscle that it can now run a simulation of how a beating human heart responds to new medicine in two days, down from two years. It is more powerful than the next five systems on the list combined, easily besting China’s National University of Defense Technology supercomputer, which now holds the No. 2 spot. China and Japan each have one other machine in the top 10 and France has one. The other five spots, including the No. 3 spot, are held by the US.