Generaly can somebody post what is good and cheap configuration for CPU minning ,how RAM memmory needed

Ryzen 5   3600x   (how much RAM)
Ryzen 9   3900x   (how much RAM)

Also, can we use cheaper motherboard like

https://www.asus.com/us/Motherboards/PRIME-A320M-K/

https://www.biostar.com.tw/app/en/mb/introduction.php?S_ID=925#