|I have no idea how to answer that question.|
You need better, newer hardware than you have.
As to what specifically, you obviously have an internet connection, use google and start researching hardware.
What you're going to buy depends on what you need the server to do and your budget.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.