Blue Gene snatched the crown from Japan in November
Blue Gene/L, the fastest supercomputer in the world, has broken its own speed record, reaching 135.5 teraflops - a trillion calculations a second.
That is double the speed it clocked up to take it to the number one spot in the Top 500 supercomputer league
source/full story: news.bbc.co.uk/1/hi/technology/4379261.stm