Nas, Nuc or PC with Roon

So I have a large music library. I’ve been moving toward a real setup. I have a Bel Canto Steamer
and a Dac. Now lookkng to go to the next step.
so many ways to skin a cat on this topic. Looking for a decent cost but also
want a large enough processor to handle this.
Thinking i7 and 16 g memory type of thing. What do you guys think? 

Roon has a community forum with a knowledgable group of regulars.

When asking there, include the size of your library. # of tracks, # of albums. 

Also indicate the percentage of your library that is already digitzed. 

Good luck. 

have you checked out the Small Green Computer products....many of us use them, myself included (I5 as my Roon server)