The server was a second hand server that has 32GB RAM and 2 i7 CPU’s, it was made in 2015 so quite old. The Odroid has only 8GB of RAM but for my purposes that’s enough, and given the power it saves it’s absolutely a bargain!
If I ever need this much memory again I can just temporarily spin up something more powerful, for all other 24/7 tasks I can keep up the efficient ARM server.