I’ll just come out and say it: 50W. I know, I know an order of magnitude above what’s actually needed to host websites, media center and image gallery.
But it is a computer I had on-hand and which would be turned on a quarter of the day anyway. And these 50W also warm my home, although this is less efficient than the heat pump, of course.
What’s your usage? What do you host?
Don’t have anything spectacular performance wise but my late 2012 i7 Mac Mini Server is reporting ~14w (with my services running and downloads happening) and I saw bursts up to 30w. Not too bad for 12yo Mac running Homebridge, 2 Navidrome instances, Jellyfin, nginx, Transmission, and SMB (looking into Nextcloud to replace that).