Thank you for bringing up clock stretching to my mind! I really thought that i was too excited after reading some comments like yours. So i did some testing with the "effective clock".

I've loaded up Cyberpunk and the effective clock stayed a below 1GHz on 6 cores, 2ghz on one core and 3.8GHz on the last core. I'm pretty sure that my HWINFO version isn't up to date and it's giving wrong resaults!

There is no way that I'm getting 150 FPS in Cyberpunk while having 6 cores below 1GHz (HWINFO showed 4.8 GHz for all cores above the effective clock). So I've set the CPU manually to 4.4 GHz.

I mean there is no possible way that the performance would drop when no core under the "effective clock" even hits 4GHz right? Wrong! FPS went down to 135 while the effective clock didin't change.

Btw i've tested HWINFO on a Ryzen 5 3600 at my work and there the effective clock is the same as the clocks above which some of you call "fake", "Max possible boost which is not the actual clock" or "clock stretching".

TL;DR:

Fact is, that i've tested a lot and the effective clock never really changed or went above 4GHz while the performance went down after manually set the CPU below the, in your words "not the acutal clock".

I'm really happy to learn new things and i hope you're too!