Frequency scaling can hurt, even in same family

This looks like a fantastically useful library.

Just a point for consideration, given that one of the targets is to make it easier to write fast code:
https://blog.cloudflare.com/on-the-dangers-of-intels-frequency-scaling/

Note that same generation, same feature set can have wildly different performance depending on if it's "Silver", "Gold" or "Platinum", none of which is exposed by flags. Silver, for example, is de-tuned for AVX-512 (as someone puts it in the comments there).

You can parse that out of /proc/cpuinfo, if you're solely looking at Linux use cases, but this seems like something that would be ideal to find out via this library.