It operates the "Tianhe-1A Hunan Solution – NUDT YH MPP" supercomputer which runs at 1342 teraflops. The "National Supercomputing Center in Jinan" operates the "Sunway BlueLight MPP" supercomputer that runs at 795 teraflops. The "Shanghai Supercomputer Center" operates the "Magic Cube-II" supercomputer that runs at 400 teraflops. The "National Supercomputing Center in Shenzhen" houses the second fastest machine in China, and the third fastest in the world. In May 2010 the Nebulae computer in Shenzhen placed second on the Top 500 supercomputer list, after the Cray computer at the Oak Ridge National Laboratory in Tennessee. The "National Supercomputing Center in Tianjin" is one of the main centers. It houses the Tianhe-I supercomputer which in October 2010 became the top speed record holder in the world by consistently operating at 2.507 petaflops. The Tianjin Computer Institute had been active as far back as 1984 when it developed the 16-bit TQ-0671 microcomputer system. A commercial affiliate of the Tianjin center had previously made the PHPC100 personal supercomputer in 2008 which was about twice the size of a normal desktop computer, but had 40 times the speed. In 2010 a second generation model was released. The "National Supercomputing Center in Wuxi" houses the Sunway TaihuLight supercomputer, the second most powerful supercomputer in the world as of June 2019.