Not only is Oak Ridge National Laboratory’s Titan the world’s most powerful supercomputer, it is also one of the most energy-efficient.
Titan came in at number three on the Green500 list. Organized by Virginia Tech’s Wu-chun Feng and Kirk Cameron, the list takes the world’s 500 most powerful supercomputers—as ranked by the Top500 list announced Monday—and reorders them according to how many calculations they can get per watt of electricity.