I'm using this to run a Plex server and a Roon server.  It works perfectly! This can transcode in realtime--something the Plex server installion on my NAS could never do.  I tested it this morning by watching a Blu-ray rip on my phone in a subway station on public wifi.  The movie played flawlessly.  It also runs Roon perfectly and is probably overpowered for what I use it for.  It took all of 10 minutes to install the RAM and M.2 SSD and another 15 or so to install Windows 10 and get to the desktop.The fan does have a high-pitched whine when the CPU is underload, but I didn't find it terrible.  It's akin to a PS4's whine in my opinion.  I set the fan curve to Quiet mode in the UEFI and it helped a little bit.  My only other complaint is the lack of an HD access light.  It's hard to know what's going on without any kind of visual feedback.