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Good news for green tech: The fastest supercomputer in the world is also one of the most energy efficient. In the twice-yearly list of the fastest computers on the planet, IBM has 5 of the top 10 most powerful computers, including the No. 1 spot.
Supercomputing, which pits the highest-end machines against challenges such as forecasting the global climate in coming decades or finding oil reservoirs underground, is a fast-changing field. The Top500 list once again had the most…










