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Confusing grammar aside, the most powerful computer before this was HPC6 in Italy which is definitely in Europe.

https://www.top500.org/lists/top500/2025/06/

https://en.wikipedia.org/wiki/Supercomputing_in_Europe

Your Top 500 link says something completely different:

"The 65th edition of the TOP500 showed that the El Capitan system retains the No. 1 position. With El Capitan, Frontier, and Aurora, there are now 3 Exascale systems leading the TOP500. All three are installed at Department of Energy (DOE) laboratories in the United States."

HPC6 is listed below those, and far less powerful.

In Europe, HPC6 was the fastest before Jupiter. It was No.4 last year and 6th now that JUPITER is taken 4th place.

Yes, but that fact does nothing to make the statement in question more sensible, so I don't know why you bothered to point it out, or to emphasize the "HPC6 [is] in Italy which is definitely in Europe" aspect. (Although I don't think the statement in question was all that nonsensical to begin with — IMO, it was just inartfully phrased.)

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