Noctua NF-A15 PWM - case fan

The NF-A15 is a premium quality quiet 140 mm fan with a round frame that complies with Noctua's AAO (Advanced Acoustic Optimization) standard. The NF-A15's frame features 120 mm mounting holes (105 mm spacing) and has been enlarged to 150 mm width in order to provide superior performance on today's high-end CPU coolers. Featuring sophisticated aerodynamic design measures such as flow acceleration channels, the NF-A15 further improves the renowned quiet cooling performance of the award-winning NF-P14. Noctua's custom designed PWM IC for fully automatic speed control and reference class SSO2 bearings guarantee superb running smoothness and excellent long-term stability.