Nov. 18 (UPI) -- The Tianhe-2, a Chinese-made supercomputer, has retained its place as the world's most powerful computer system -- nearly twice as fast as the next two American supercomputers.
Tianhe-2 can operate at 33.86 petaflop/s, which is the equivalent of 33.86 quadrillion calculations per second according to a test called Linpack benchmark. American super computers Titan and Sequoia came in second and third clocking 17.59 petaflop/sec and 17.17 petaflop/sec respectively.