I replaced my old Intel Core i7 HP ProLiant server with an Odroid M1 (ARM Based) and it consumes 2 watts compared to 72 that the Intel Server did.
The only thing I can’t do with it is my Minecraft server, it runs all else perfectly. Even the Lemmy instance of this account is powered by the same server! And what’s more it basically runs for free, as solar generates enough power for the server to consume, even when it’s cloudy.