http://money.cnn.com/galleries/2011/technology/1111/gallery.fastest_supercomputer/?iid=Popular
“No: 1 Computer”
“It is more powerful than the next seven supercomputers combined.
“The supercomputer is capable of 10.51 Petaflops. That means it can do 10.51 quadrillion — that’s a million billion — calculations per second. Hence the supercomputer’s name: The letter “K” is short for the Japanese word “kei,” which symbolizes 10 quadrillion.”