That subject wasn't meant to be a tongue twister, but it might make your head spin if server licenses are coming out of your budget. Here's a handy "unofficial" Windows Server Licensing calculator. You pay the Number of CPUs per host times the cores in each CPU just for the privilege of licensing Windows Server.
I happened upon this site after speaking with a colleague about server licensing.
It's been a few years since I was an IT director at a mid-sized manufacturing company. Buying new servers was always an expensive proposition. I'm working on a blog about CALs, but wanted to be certain that my knowledge is up-to-date. His suggestion was, "call a company and ask around buying a server with X cores and ask to bundle MSFT licenses for a domain controller."
He followed that up with: "be prepared for aggressive emails lol". That's when I found this calculator.
It's been a nice week ... I'll spare myself the aggressive emails.