The NF-A6x25 FLX is a highly optimized, premium quality quiet fan that draws on pioneering aerodynamic design measures, such as Flow Acceleration Channels and Noctua's AAO-frame system. Smooth Commutation Drive technology and reference-class bearings ensure superb quietness and outstanding long-term stability. Modular cabling and Low-Noise Adaptor make the NF-A6x25 a premium solution for highest claims.