The NF-A15 is a fan with a round AAO (Advanced Acoustic Optimization) frame and mounting holes (105 mm hole spacing). To achieve even higher cooling performance on current high-end CPU coolers, the width has been increased to 150 mm. Through advanced aerodynamic design measures such as Flow Acceleration Channels, the NF-A15 achieves an even further improved silent performance compared to the multiple award-winning NF-P14. Noctua's specially designed PWM IC for fully automatic speed control, along with the ssO2 reference-class bearing, ensures superb smoothness and excellent long-term stability. The modular cabling, low-noise adapter, and 6-year manufacturer’s warranty make the NF-A15 a top solution for the highest demands.