Japanese Supercomputer Built by Fujitsu Claims World's Top Spot - WSJ.com

TOKYO—A Japanese supercomputer built by Fujitsu Co. grabbed the title of world's best-performing machine from a Chinese
competitor, returning Japan to the top of the computer arms race for
the first time in seven years.

Installed at Japan's Institute of Physical and Chemical Research and
also known as Riken, the Japanese government-funded "K Computer"
performs more than 8 quadrillion (8,000 trillion) calculations per
second. K Computer is a play on the Japanese word "kei" for the number
10 quadrillion, which will be the number of calculations the machine
aims to handle once it is completed in 2012.