In the ways the heat management is designed, it reminds me of the oft-maligned G4 Cube, which used the same components around the edges, airflow through the centre idea to cool the machine. The small size of the unit also reinforces the similarity for me.
the cube also didn't have a fan, it just used a chimney effect. And no I never heard of an overheat problem, I still have my cube--13 years, and it still runs fine (slow these days though...)
