Elite Bastards posted a review on the Akasa Nero AK-967 CPU cooler

Akasa (naturally) also provides the cooling fan for the Nero, a 120mm affair complete with PWM support so that its rotation speed can be controlled by CPU temperature. This gives it a variable speed of between 500 and 1,500 RPM, and a maximum noise level of 24.6 decibels, while pushing up to 50.54 CFM of air.

Akasa Nero AK-967 CPU cooler review