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Three Reasons IBM Keeps Winning the Green500

IBM keeps winning the Green500, a contest for the most energy-efficient supercomputer. There are three reasons IBM keeps winning, but the bottom line is that it is not cranking up clock speeds just to win the Top500, thereby increasing its energy efficiency ratings for the Green500.

Table of Contents:

Three Reasons IBM Keeps Winning the Green500
The supercomputers of the world are not just competing on raw speed, but also in Green500, whose official metric is floating-point operations per second per watt of energy consumed (flops/watt). For instance, this year's winner�the IBM Blue Gene/Q�achieved 1,684 Mflops/watt, compared with the second-ranked system by HP, which used Intel's Xeon processors to deliver 948.29 Mflops/watt, making the Blue Gene/Q 77 percent more energy-efficient. Still in the prototype stage, when completed next year, the Blue Gene/Q is expected to top 20 peta-flops, making it 10 times faster than this year's winner of the Top500 list�giving the Blue Gene/Q a shot at topping both the Top500 and Green500 lists in 2011.

On the latest Green500 list, updated last month, IBM won not only the top spot, but also the top 15 out of the top 25 greenest supercomputers and over half of the top 100.

IBM's Blue Gene/Q ranked as the "greenest" of supercomputers worldwide. IBM made 15 of the top 25, and over half of the first 100, on the Green500 list.

Next: Main Reason IBM Dominates Green500 List >>

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