some of the new cases have fans built in (but will limit expandability, getting in the way of the pins)
the official word is "continual heavy usage" will cause thermal throttling and a fan will avoid that. also that the 5 is generally cooler than the 4 and faster even if throttling, so it's not as terrible as all that.
― koogs, Wednesday, 29 November 2023 18:22 (six months ago) link