For example
AMD Ryzen Threadripper 1950x ( 800-1000 $) 1525 H/s
AMD Ryzen 1700X ( 330 $) 725 H/s
is it profitable to make such investments in mining? I think not.
If there is a given processor, you can receive 15-20 dollars of additional income per month. And to buy this processor for the mining is unreasonable.
It's easier to look for cheap old server boards with 2 processors and mine on it.
Yes, I agree, hence the 150 h/s hashing rate I'm promoting here as an average default value for average CPUs, but I wasn't sure what is he looking for.
Some people prefer to switch to CPU mining rather than GPU mining since GPUs were/are hard to find on the market.
If you compare the AMD Ryzen Threadripper 1950x with a 1080ti then the hash rates are kind of the same, the price as well if you're lucky but normally it exceeds that amount.
The issue is you can't buy a 1080ti since it's always out of stock

Not to mention you can use that CPU for other stuff as well.