Nas upgrade/change solution

[Noufas]

Hello
I am currently using a terramaster f4 220 nas
As I think that I am pushing the cpu/ram to its limits I want to see what options I have
I have it placed in a utility room along with the router so looks are not important.

Could I get a xeon server and put the drives there? What options are there for that?
What I can get in terms of something better cpu wise that will not break the bank?

Thank you

 

[Noufas]

I am seeing near to 100% usage when I am even downloading torrents to it and it will not utilize the full speed.
The only services I am running are plex, emby, multimedia server and transmission.
Obviously I am not in dire need to update but I would like to think ahead a bit if possible

 

[Noufas]

Of course today out of all days it has stopped working
I am hoping it's just the psu