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LuStaysTru said:

Oak Ridge National Laboratory's Cray XT, running at 1.75 petaFLOPS, is in first place. Known as the Jaguar, it uses an AMD x86_64 Six Core, and it can perform calculations in one second that would take a PC 10 hours. A petaFLOP is 1,000 trillion calculations per second. On the drawing boards at various labs are exascale computers, which could do one quintillion calculations a second -- that's one million trillion.

Top Speed of 2.98 PetaFLOPS

The top Chinese supercomputer, called Nebulae, runs at 1.2 petaFLOPS, about twice as fast as the previous fastest computer from that country. Theoretically, Nebulae can run as fast as 2.98 petaFLOPS, which, if accomplished, would vault it into first place. It is built on a Dawning TC3600 Blade system , using Intel X5650 processors and Nvidia Tesla C2050 GPUs.

But can they play Crysis with maxed out settings?