Not enough RAM to be honest (at least not to be useful in the near future). I ran an Emby/Jellyfin server with 180 GB of music (nothing else was running, not even the UI), and it ran out of RAM, and was swapping like crazy at 1 GB of RAM on my Rpi3. In this day and age, you need 2 GB of RAM for servers, but that won’t be enough within a couple of years (and that’s why I don’t suggest this new model with 2 GB of RAM). I personally would only get a new Raspberry Pi if it comes with 16 GB of RAM, so I can run a UI properly. You just can’t ever have enough RAM these days. Linux is using less RAM than Win11, but not by much these days. It’s growing too fast in requirements in the last 3-4 years.