Tiny fans aren't necessarily whiny, but the quiet fans generally don't push a ton of air. My RPi4 has a Noctua 40mm x 20mm fan that is inaudible from more than

Tiny fans aren't necessarily whiny, but the quiet fans generally don't push a ton of air. My RPi4 has a Noctua 40mm x 20mm fan that is inaudible from more than a couple feet away. Sure, it would be fairly easy to design a die cast housing to cool the RPi silently, and the part cost would be about the same as a fan, but the tooling costs are going to be fairly high for a product that really won't sell a ton of units.