Good Gear Guide
In Pictures: The 10 fastest supercomputers on Eart...
No. 4: K computer (Fujitsu)
One of the older entries on the list, Fujitsu's K computer is the only SPARC64-powered system to crack the top 10. It's a power-hungry beast – producing just 830 megaflops per Watt to deliver its 10.5 petaflop capacity.
In Pictures: The 10 fastest supercomputers on Earth