@BingsPingsDings The unibody Macs were/are extremely well built and had all the necessary ports, so they do run ad-infinitum (until the battery gets bloated).

On top of that, there's a good number of those in storage at companies as they get cycled out of use as workstations.

Put in Debian (they ran Intel CPUs), and you have a PoC server on the cheap. As a temporary solution.

And we all know that the most permanent thing is the temporary solution.