I just bought a new Mac Mini M1. I also have an older iMac 27”. Just finished a render test on both machines.
I created a 3D render of my living room and rendered the exact same Blender file on both my iMac and the new Mac Mini with the M1 chip.
iMac render time: 13 minutes 58 seconds.
Mac Mini M1: 6 minutes 57 seconds.
Almost twice as fast. Wow . Plus if EVEE would always crash on my iMac but the Mac Mini can handle EVEE now as well.