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IMHO too many engineers (software devs in particular) think things are fine if there is a way to configure things the way you want. IMHO having to worry about which cores a process is running on is unacceptable. I'm kind of dreading AMD following along with perf and efficient cores.

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At the moment, the closest thing AMD has to efficiency cores is Zen 4c - and it's really not an eco core in the traditional sense.

https://www.techpowerup.com/310057/amd-zen-4c-not-an-e-core-...

The asymmetrical architecture in the 7950x3D unfortunately results in similar (but less extreme) issues to e-cores. Only one CCD has a big cache, while the other clocks higher. So, it can happen that processes which love the extra cache end up running inefficiently on the higher-clocked smaller-cache cores, or the other way around, where clock-sensitive processes are throttled by running on the 3d cache cores.

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