"The front fans are optimized for air intake, and three 140mm fans should draw quite a lot of air in. The PM01 is actually one of the best cases for cooling performance in the market this year. One of my biggest considerations for fans is the noise they make. This can be reduced by adjusting their speed. The front fans created the most amount of noise. On a scale from one to ten, where one is silent and ten is a jet taking off, the front fans would be 3.5/10 when the computer is idling. When the computer was under load, the fans would not speed up much when controlled by my motherboard, and so they went up to 4.0/10 in my personal opinion. The rear exhaust fan is quieter and during idle is at 3.0/10, and under load 3.5/10."
Ben Joubert - APH Networks.
SilverStone Primera PM01 chassis review by APH Networks - Introduction & Conclusion.