[minimaul]

Low.

For me, SoC power draw when compiling apps is usually around 15 to 18W on a M1 mac mini.

My example app (deadbeef) compiles in about 60 seconds on that mac mini.

On a 2019 i7 16” MBP (six core), it takes about 90 seconds, and draws ~65W for that period.

So… radically more power efficient.

edit: this is the same version of macOS (big sur), xcode, and both building a universal app (intel and ARM).