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In Pictures: The 10 fastest supercomputers on Eart...
No. 2: Titan (Cray)
The fastest American supercomputer in the latest top 10 is Titan, the only Opteron-based system to make the top tier. Titan uses about half a million main cores and a quarter-million NVIDIA-provided accelerators to produce 17.5 petaflops of computing power to its users at Oak Ridge National Lab.
In Pictures: The 10 fastest supercomputers on Earth