This may be my first post on the Unraid forums, but I have been reading and using for years. I am on my second Unraid system built from tips on the "Good Deal's" forum. My current rig is a Natex S2600 dual Xeon with 128 gig with the Intel case/power supply/cooler and drive cages talked about here. I built it about 8 months ago, originally planned on trying to run it as a Hackintosh server.
That didn't work so well, so I put Windows 10 on it, but was never happy with it, so went back to trying to get OSX on it again. After wasting a bunch of time on that, I tried a demo of Unraid 6 on it, liked that so much that I moved all of my media off my old Unraid 5 server, and restarted the S2600 as a new Unraid 6 (using my purchased Key) server. Moved all my media, and have totally loved everything since then. I am learning about dockers and virtual machines, and when I mess something up, I can just delete the experimental thing and nobody knows about it. That is the coolest thing about the dockers and VMs. There is enough horsepower that I can spin up a test docker or VM and it does not affect the "production" Plex server.
If I have it transcode, the fans will spin up high, but my CPU coolers are passive, so that is pretty much expected. I may try to replace the large Intel fans with Noctua fans to see if there is a difference.
Chef Jay