Conclusion:
GELID has done a wonderful job with the Tranquillo CPU cooler. As the name implies, it did live up to being a silent (and well performing) CPU cooler. I was especially happy to see the broad platform compatibility right out of the box. They may not have a large CPU cooler line-up right now, but GELID is off to a wonderful start with the Tranquillo.

Pros:
Quiet operation
Good performance for a silent cooler
Large CPU compatibility list
Fairly average price for a cooler of this type, especially with all the cross-platform mounting hardware included

Cons:
Lacks vibration absorbing fan mounts