Updates to this story
The supercomputer runs at more than one quadrillion (one thousand million million) calculations per second, making it the fastest one in the country.
Named "Xingyun", has been developed in Tianjin, and works at double the speed of "Tianhe-1", the previous fastest machine in China.
Its peak performance reaches nearly three quadrillion calculations per second, three times the peak speed of Tianhe-1.
It can do in a second what takes a whole day for a dual-core PC to do.
"Xingyun" is part of the "Dawning 6000" project which was jointly developed by the company, Chinese Academy of Sciences Calculation Institution, and the South China Supercomputing Centre, for cloud computing and DNA sequencing purposes, officials said.
By the end of 2010, "Dawning 6000" will be delivered to the National Supercomputing Centre in Shenzhen in Guangdong province for use in information services in southern China, including Hong Kong and Macao.
What is under the bonnet appears to be a secret.