Hello!
I just built myself a fan-less computer for use just with Windows 10 and Roon Core. Its working great, and Roon has never sounded so good:) Reason I went with the HDPLEX H5 Chassi, is because I wanted to have a chase that is kinda the same size as my current Naim system. And yes, it may be overkill:)
My configuration:
Motherboard: ASUS ROG STRIX Z390-I GAMING, S-1151 (mini-ITX)
Processor: Intel Core i7-8700 Prosessor
RAM: HyperX Fury DDR4 3200MHz 16GB
OS: Samsung 970 EVO Plus 250GB SSD M.2
Data: Samsung 970 EVO Plus 1TB SSD M.2
Case: HDPLEX 2nd Gen H5 Fanless Chassis
PSU: Sea Sonic PRIME Fanless 600watt 80 PLUS Titanium
Software: Windows 10 and only Roon Core
Power consumption: Around 25W