Supercomputing is becoming super-efficient. The highest climber in the latest Top500 list of the ’s fastest supercomputers is also one of the highest scorers on the Green500 ranking of the ’s most efficient.

But the November 2017 edition of the Top500 and Green500 is also remarkable in other ways, as it marks a tipping point in U.S. dominance of the list.

Chinese systems now outnumber U.S. systems on the list by 202 to 144 — a reversal of the situation just six ago, when the U.S. had 169 systems in the Top500 to China’s 160. It will still be a long while before third-placed Japan overtakes the U.S.: It has 3 systems in the list, followed by Germany with 20, France with 18, and the with 1.

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