The Millennium is a behemoth with great fundamentals, but it benefits from some judicious configuring before you buy.
Most people don't throw away old electronics --they relocate them. The laptop goes from the desk to the closet, the closet to a storage bin, the bin to the garage, where it joins a growing collection ...
Tearing down the Steam Machine highlights its impressive repairability, though RAM upgrades take some serious screwdrivering.