Is there a general guideline with Server Side System Requirements for the MoP repack?

The older repack / release I used had a small memory footprint, but have read that some now require a substantial bit of kit.

I am hoping to just toss on a mini PC; ie, entry line NUC or similar and call it good.

It is in house use; ie, LAN only, 3 to 5 players tops.

Thanks in Advance for any information. If there is already a post somewhere with this information; sorry for the forum clutter.