Came here to say this. Think I had a 40gb.

a 4090

You could run desktop Windows but if you get the Pro version then you can RDP into from your desktop/laptop. It makes administering it very easy, like working on it locally. .

Personally, I run Ubuntu Server (took a little learning) which I choose to run on Proxmox. You can just run on bare metal. I then just install the media-related packages I use : plex, Sonarr, radarr, SAbnzbd etc