Ryzen 5 4600G on an ITX board with 16GB RAM, 512GB NVMe and hard-wired gigabit. It's hooked to a ~40 inch Sony 1080p dumb TV via HDMI.

I don't use fancy GUI media centers or anything, just a standard Debian XFCE desktop scaled up. Netflix and Hulu work just fine in Chrome and Firefox. No idea about 2k+ performance due to 1080p limit. TV for me is mostly background noise so media quality is of no concern to me.

My only gripe is once in a rare while the audio goes to shit and continually crackles but reboot and its fixed.

An asrock deskmini would probably do. Anything zen2 or newer I'd be fine with personally.