Aftermarket racked Mac Minis aren't a new idea in server spaces. Have you considered creating a cluster of them to fit into a rack? As far as price/performance goes the Mac Mini is about as good as you can get from Apple.

> It's very unlikely, but wow it would be great if I could build a server using an M1 processor. Just the power saving alone would be phenomenal.

Mac minis are designed with a stackable form factor, and in fact one of their selling points is to put together server farms for stuff such as running build jobs with Xcode.

If I'm not mistaken, mac minis with the M1 chip are sold starting at 700$ a pop.

Apple made server racks many years ago. This new silicon could give them a reason to re-enter that market. In the meantime, the new Mini could be a good fit for a home server.