A Japanese supercomputer has broken its own record as the world's fastest machine by managing to do 10 quadrillion calculations in a second.

The "K Computer", which has more than 88,000 central processing units mashed its own record of just over 8 quadrillion calculations during an experiment in October.

Ryoji Noyori, president of Riken, the company that jointly developed the machine alongside Fujitsu, said it was a landmark achievement in computing.

"The K Computer is a key national technology that will help lay the foundation for Japan's further progress. I am delighted that it has achieved its major objective, demonstrating our strong technical power,"
he said.

Of course the K Computer will soon be out classed by the Chinese, but it is still a good speed record.