Changes

The '''CDC 6600''' was a [https://en.wikipedia.org/wiki/Mainframe_computer mainframe computer] manufactured by [https://en.wikipedia.org/wiki/Control_Data_Corporation Control Data Corporation], designed by [https://en.wikipedia.org/wiki/Seymour_Cray Seymour Cray] <ref>[http://research.microsoft.com/en-us/um/people/gbell/craytalk/sld001.htm A Seymour Cray Perspective] by [https://en.wikipedia.org/wiki/Gordon_Bell Gordon Bell], [https://en.wikipedia.org/wiki/University_of_Minnesota [University of Minnesota]], November 10, 1997</ref>, and flagship of the [https://en.wikipedia.org/wiki/CDC_6000_series CDC 6000] series, first delivered in 1964. It is generally considered to be the first successful [https://en.wikipedia.org/wiki/Supercomputer supercomputer], outperforming its fastest predecessor, [https://en.wikipedia.org/wiki/IBM_7030_Stretch IBM 7030 Stretch], by about three times. Its circuits were cooled by extensive chilled water plumbing. It remained the world's fastest computer from 1964 to 1969, when it relinquished that status to its successor, the '''CDC 7600'''