I'm going to start by saying I've only been mining for 2 days, and I haven't really seen anyone else talk about using unmineable for XMR mining. Does anyone else do it?
Read this article, there is a very detailed description of the mining of Monero and all the necessary links are given.
https://coinmarketcap.com/alexandria/article/how-to-mine-moneroThe best benchmark for Monero
https://monerobenchmarks.info/But it's better to read the reviews of the miners first. A lot of problems arise when cooling processors, increasing memory timings, and so on. That is, for mining, it is better to take a specific motherboard, RAM and cooling system