hal301

This is actually the third redesign of the mini.  First, from 2005-2009 was 6.5" sq and 2" tall, second, from 2010-2023 was 7.75" sq and 1.4" tall, and now 5" sq and back to 2" tall.  Volumes of first two iterations were about the same, but new one is roughly half.

One other difference, although not clearly mentioned by Apple, is that the LG monitor has an internal power supply - the power cord plugs directly into the back of the monitor.  The Studio Display most likely uses the same (or at least very similar) external brick that the 24" iMac uses. So one more small box on the floor.