IBM ends China's 5-year reign atop supercomputer rankings

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IBM ends China's 5-year reign atop supercomputer rankings

There’s a shake-up – and a scandal – in the Top500 ranking of the world’s most powerful supercomputers.

The U.S. has retaken first place in the Top500 list after five years of dominance by China. Computers built by IBM for the U.S. Department of Energy have pushed the previous two record-holders, both Chinese, into second and fourth place.

[ Now see who's developing quantum computers.]

But the previous fourth placeholder, Japan’s Gyoukou, is nowhere to be found, after one of its creators was arrested on suspicion of fraud.

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