| Updated at: 2200 PST, Tuesday, June 21, 2011|
TOKYO: A Japanese supercomputer has snatched the title of the world's fastest machine, ending China's brief reign at the top after six months.
The K supercomputer, built by the Fujitsu Company, is as fast as one million desktop computers connected together.
It has more than three times the power than the previous title-holder and is capable of performing eight quadrillion calculations each second
A quadrillion is one followed by 15 zeroes and in computer jargon the speed is known as 8.2 petaflops.
The previous fastest machine was the Chinese computer Tianhe-1A, which was clocked at 2.507 petaflops and highlighted the emergence of China's growing technological and economic power.
The Tianhe- 1A machine was the first time China had topped the speed list, wrestling the title from the U.S. who had four of the top ten supercomputers.