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M1 value seems wrong, should be 407

Different test:

Cinebench R23 Multi Package Power Efficiency

M1 - 561 pts/watt

M2 - 433

AMD Ryzen 7 6800U - 374

Intel Core i5-1240P - 258

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Those are the "multi package" numbers. Though exactly what "single" vs "multi" means in this context is unclear to me.

"Cinebench R23 Multi" and "Cinebench R23 Single" are the software workloads used (multi-thread and single-thread). "Package Power" specifies (approximately) where the power is measured and what components are included—but reviewers like NotebookCheck aren't equipped to actually measure power at the chip or package level, so they're actually relying on software estimates that add another layer of vendor-specific sources of error on top of the inconsistencies about what's in the package (eg. Apple puts DRAM in the package but Intel and AMD don't).

Cinebench uses Intel Embree, which is library that is hand optimized for x86 instructions.

It should not be used to compare ARM vs x86 CPUS. Geekbench is better here.

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