The expensive mistake is not buying a slightly smaller CPU. It is buying a tower that cannot grow, has no out-of-band management, and is already out of warranty when the business depends on it.
File server, Tally/ERP, a handful of VMs, or CCTV storage are different designs. We ask what runs today, how many users, and what happens if the box is down for a day.
Use the infrastructure configurator if you already have a rough idea, or talk to us if you do not.