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Could it be because it's the newest CPU included in the test suite.

Possibility related to what fab generation the CPU is on vs. other chips tested?

EDIT: why the downvotes?

I mean why CPU=8, not CPU=7 or CPU =9 has the fastest access. Anyway, I have asked this in [stackoverflow](https://stackoverflow.com/questions/73767563) and get downvotes too. T_T

If the test was done on a single processor and not repeated it's possible only that particular chip has this unique behaviour.

Each CPU in those graphs are a different core of a single physical CPU.

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