ASRock DeskMini A300, running a Ryzen 3400G and 32 GB of RAM and hooked up to an 8 TB ZFS pool. The whole deal is hidden behind the monitor on my desk. It's running a whole pile of self-hosting stuff (Plex, Home Assistant, Seafile, Syncthing, Pi-hole, Wiki.js, Photoprism, Wireguard, Mail Piler, backups, etc) and hardly ever breaks a sweat. I also have a no-name mini PC from Aliexpress running backup DNS and VPN in the garage.
