DH4300 Plus

Honestly the cpu on the ugreen NAS isn’t anything special for AI use. Just a middle of the road intel processor. If AI is your primary goal I’d look elsewhere

mostly watching mkv files through Jellyfin to my local smart TVs. I dont really anticipate having multiple users or other devices such as smartphones or tablets. Essentially you're asking its ability to transcode a single stream. The "other devices such as smartphones or tablets" is a red herring be

Question: is the NAS going to be running your Jellyfin server entirely? As in installing Jellyfin onto it and storing your media there, streaming using the NAS’s native hardware? If the answer is yes, then no. A dh2300 will not be able to transcode anywhere near the amount of an Intel cpu or having

If you plan to run apps on the NAS (plex/nextcloud/homelab/docker/etc) then get something with at least an Intel N100 (for plex transcoding) and 8-16G or RAM (that is also upgradable). The Terramaster 425 Plus seems right in this wheelhouse. I'd avoid the UGREEN DH4300 Plus -- meh processor and not