Well, I thought about a fan design that would be better than the Nexus. It would have to start below 5V, have the same kind of frame (more 'open' than other fans, resulting in less turbulence noise from the fan blade tips) and maybe blades like the ones of the Sharkoon (with golf ball potholes to minimize turbulence). And to minimize the noise at the source, some noise dampening stuff integrated into the fan.
But a better approach would be a case with strong positive pressure, coming from 3 fans on the bottom, 120x38 mm for better handling of back pressure, and a sound dampening / dust filtering contraption on the whole bottom of the case. Case feet would have to be tall, probably same height as the ones in the Nexus Breeze, but allowing more airflow.
No exhaust fans, which would be directly audible, but all possible exhaust areas should be covered by large heatsinks (separated for CPUs, GPUs, HDDs), heat being transferred by flexible heatpipes.
Oh yes, and a passive PSU that is cooled by heatpipes. An area of 8 x 15 cm could accomodate a PSU heatsink that would nicely dissipate upto 50W.
I sure got carried away...
![Laughing :lol:](./images/smilies/icon_lol.gif)