It's the way I do all of my service backups. One separate DB container per docker stack so nothing else is in there, all the data in one folder, and off we go at 1AM.
You're building a machine from parts. Different Mainboard, PSU, CPU and drive combinations. No real way for a system manufacturer to optimize for a specific use case and power target.
The full ATX PSU alone has a widely variable efficiency, and often not down in the low double digit power areas.
You're not going to see similar power levels to those ARM devices. A massive part will be the drives, 3.5" drives take between 6 and 10W per drive while running.
Docker behind a Traefik proxy with crowdsec checking (adds additional lag). Ryzen 2700x 32GB local machine. All storage on SSD.
The web interface is very usable, switching subpages takes maybe half a second max without it being cached by the browser.
Could of course be quicker (as basically everything ever), but as we mostly use it with the Windows sync clients and Android apps we never really have any issues.
It's the way I do all of my service backups. One separate DB container per docker stack so nothing else is in there, all the data in one folder, and off we go at 1AM.