5 super-cool supercomputers

Japan's K Computer became the first supercomputer capable of running faster than 10 petaflops. It held the title of the world's fastest supercomputer from June 2011 until June 2012. Now, it's ranked fourth.

Still, it's one of only 26 supercomputers in the world with performance greater than 1 petaflop.

There's something to be said for remaining in the top ten of the list for multiple years in an industry that's moving rapidly. The last system ranked on this year's Top500 list ranked 320 just six months ago.

K Computer is installed at the RIKEN Advanced Institute for Computational Science in Kobe, Japan and was manufactured by Fujitsu.

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