https://forums.serverbuilds.net/t/guide-nas-killer-6-0-ddr4-is-finally-cheap/13956
They are all about low cost high performance builds.
Quicksync from Intel with an igpu is a god send . I’m running an i3 in my Plex server and it’s a hoss.
Good luck op
https://lemmy.world/post/10327372
This dude uses mini PCs for pi type tasks.
Might be easier to get a hold of.
Good luck OP
I’m going to give a shout out to Ironicbadger over at https://perfectmediaserver.com/
One of his most recent builds was on promox
I’ve been running his 2017 version of Debian with docker-compose - zfs and mergerfs. And it’s been rock solid for ages and ages.