A lot of skepticism in this thread. I've got a pi4 4GB running Ubuntu server, acting as a SMB file server, Plex media server, Mopidy music server, Spotify Connect endpoint, video recorder for my two outdoor IP cameras, and a Minecraft server for my kids, all running simultaneously. And it's not breaking a sweat, not even getting close to full memory or CPU utilization.
I do use a USB nvme SSD enclosure for storage to be fair, and it's only stable when using a powered USB hub.
I do use a USB nvme SSD enclosure for storage to be fair, and it's only stable when using a powered USB hub.