Buy Tower - Server

If the server is mission-critical, look for a model with dual power supplies . If one fails, the server stays up. 4. New vs. Used

You can get massive amounts of RAM and cores for a fraction of the price on sites like eBay or specialized refurbishers. Just be prepared for higher power bills and older hardware. To give you a better recommendation, let me know:

You get a warranty and the latest power efficiency. (Example: Dell PowerEdge T-series or HPE ProLiant MicroServer).

What is your (file storage, hosting a website, or running virtual machines)? What is your approximate budget ?