Dedicated Build Machine Hardware and Instructions

For a very small development team, I’d like to setup a computer with a perforce depot, and have this computer able to make builds.

What kind of hardware do I need - I only plan on using it for builds - no editor work, so I won’t need a GPU, right? Is this possible?

I also don’t mind if it’s slow, as we’d only do builds overnight. Ideally, I want the cheapest, quietest, most power-efficient machine.

And secondly, this is the most information I’ve found, but it’s not clear to me after looking it over. Using the Unreal Engine Build Pipeline | Unreal Engine 5.1 Documentation So, any additional info, or a tutorial or steps would be great.

Thanks!

I know there are automated build setups like Jenkins, or Teamcity as well, but that’s outside the scope of the question at this point.