At work we have ~10 of these passive cooled TopTon n100 with their 5x Intel i226-IV 2.5GE interfaces laying around for emergency router setups. They are great for a lot of things.
But be careful: starting with the n150 you will need active cooling.
I have an n305 with the CPU thermally bonded to its small aluminum case with a quiet 80 mm Noctua fan screwed into the fins of the case. The manufacturer on Ali Express said the fan is optional, but it can get to ~85°F in the room where the computer is, so I want to be careful. At idle, the CPU reports 5-10°F above the room's temperature.
It has 10 TB spread across 3 SSDs and 2 x 10 TB spinning drives attached. It's a Time Machine target for a handful of Macs and a Borg Backup target for several machines, including some across the internet using Tailscale. It's also running Home Assistant with AppDaemon (with dozens of little apps), Frigate (object detection for 3 Ethernet-connected cameras using a Google Coral TPU over USB), Paperless-ngx (15 GB of PDFs), LibrePhotos (1.2 TB of photos), Syncthing, Tiny Tiny RSS, a UniFi Controller, distinct PostgreSQL instances for various of those, and more. I count 21 Docker containers running right now, and not everything is containerized.
The spinning drives are powered down with a smart plug for all but 1-2 hours at night for backups. With those off, the thing sips power... 10-15 W most of the time with occasional spikes up to ~30 W when LibrePhotos is doing facial recognition or Paperless-ngx is updating its ML models. It never feels slow. I've been running one or more servers at home for 30+ years, and this single machine handles everything so much better than any combination of machines I've had.
64GB SODIMMs are now available and there are multiple reports of them working fine with the N305[0]. It is highly likely that it will work fine with the N100 as well.
0: https://www.reddit.com/r/homelab/comments/1m8fgec/intel_n305...
DDR2 (667MHz) > DDR3 (1.6GHz) > DDR4 (3.2GHz) etc. in longevity. and cas latency
<100GB SSDs from 2010-2015 out last all later >100GB SSDs.
SD cards can last 12 years before failing I know because I ran 2x 32GB SanDisk into the ground, one is still up sort of...
Hah! I wish! Though then I might be out of a job