Alphacool Apex Stealth 120 mm Fan @ TechPowerUp
 

The Alphacool Apex Stealth is a unique new fan which uses a metal frame and a patent-pending decoupling mechanism to be one of the quietest fans in the market. It performs reasonably well and has a long RPM range to be versatile with different use cases too. There are two max speed options as well as four colors/finishes to choose from.

https://www.techpowerup.com/review/a...th-120-mm-fan/