http://news.bbc.co.uk/1/hi/technology/10181725.stm

"China has 24 machines in the list. Its fastest has a top speed of 1.20 petaflops, more than double the speed of its previous top supercomputer. However, it has a theoretical top speed of nearly 3 petaflops, which would make it the fastest in the world."

The 'Explore the Top 500 machines' link on that page is interesting too.......