Hey C&MT, it's been a while for me. I'm putting together a passively-cooled Qotom system (Atom C3758R) to become a new OPNsense router... More accurately, it will probably run Proxmox, with the router ...
When I built a NAS a few years back I used the then-slightly-out-of-date i3 8100 quad core CPU, more than enough oomph for NAS stuff but has the benefit of supporting ECC memory as well, on the right ...