Titan to become world's fastest supercomputer Summary: The U.S. Department for Energy's Oak Ridge National Laboratory is ready flip the on switch on what is expected to be the world's fasted supercomputer which promises a speed reaching 20 petaflops per second. By Andy Smith | October 29, 2012 -- 16:31 GMT (09:31 PDT) Previous | Next Image 12 of 12 Tian's with 299,008 processors will eclipse Jaguar's 224,256 processors. Topic: Big Data Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.