On the subject of the higher RPM 92mm fan does anyone know what would be a better swap for my L9a? The Noctua NF-A9x14 HS-PWM has an airflow of 57,5 m³/h, while the Noctua NF-A9 PWM has an airflow of 78,9 m³/h.
Do keep in mind that the NF-A9x14 is a slim fan at 14mm. The NF-A9 is full 25mm in width. Hence generally being able to push more air, although those specifications are generally measured at the fans top speed. Ie, not the speed you most likely would/will be running on a daily basis and hence isn't that much of a valid point to go after.