Potential increases in hash rate for CPU purchase

[slyexe]

Probably better off just buying a server processor(s) and having more cores. Unless you have a fairly narrow password keyspace you're not going to have much luck and wasting resources on a lost cause. If you do have a good idea of the password and have a small keyspace to crack which at 7h/s I understand it taking a while then with your previous comment on using an AMD ryzen 5 1400 why not just step it up to a 3000 or 5000 series if your motherboard supports it.

Otherwise, being a slow hash rate, it won't improve much maybe double.