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by akira2501 702 days ago
> so few performance cores and so many efficiency cores

I was baffled by this too but what they don't make clear is the performance cores have hyperthreading the efficiency cores do not.

So what they call 2P+4E actually becomes an 8 core system as far as something like /proc/cpuinfo is concerned. They're also the same architecture so code compiled for a particular architecture will run on either core set and can be moved from one to the other as the scheduler dictates.

1 comments

> They're also the same architecture so code compiled for a particular architecture will run on either core set and can be moved from one to the other as the scheduler dictates.

I don't know if that has done more good than harm, since they ripped AVX-512 out for multiple generations to ensure parity.