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Product Description

Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua’s AAO frame, the NF-A6x25 FLX is a highly optimised, premium quality quiet fan in 60x25mm size. Smooth Commutation Drivetechnology and Noctua’s reference class SSO2 bearings ensure superb running smoothness and excellent long-term stability. Topped off with modular cabling and Low-Noise Adaptors, the NF-A6x25 is a premium choice for the highest demands.

AAO frame

Noctua’s AAO (Advanced Acoustic Optimisation) frames feature integrated anti-vibration pads as well as Noctua’s proprietary Stepped Inlet Design and Inner Surface Microstructures, both of which further refine the fan’s performance/noise efficiency.

Reduced motor hub size

Thanks to its streamlined, compact motor design, the NF-A6x25’s motor hub is smaller than with conventional 6cm fans. This allows for more blade surface area and thus contributes to the NF-A6x25’s superior airflow and pressure performance.

SSO2 bearing

The NF-A6x25 features the further optimised second generation of Noctua’s renowned, time-tested SSO bearing. With SSO2, the rear magnet is placed closer to the axis to provide even better stabilisation, precision and durability.

Flow Acceleration Channels

The NF-A6x25 impeller features suction side Flow Acceleration Channels. By speeding up the airflow at the crucial outer blade regions, this measure reduces suction side flow separation and thus leads to better efficiency and lower vortex noise.

Scope of Delivery

Low-Noise Adapter (L.N.A.)Ultra-Low-Noise Adapter (U.L.N.A.)3:4-Pin Adaptor30cm Extension Cable4 Vibration-Compensators4 Fan Screws

Smooth Commutation Drive 2

The latest version of Noctua’s advanced Smooth Commutation Drive system ensures superb running smoothness by eliminating torque variations and switching noises. This makes the NF-A6x25 remarkably quiet even at very close distances.

Connector
4-pin PWM 3-pin 4-pin PWM 3-pin

Voltage
12V 12V 5V 5V

RPM
Max: 3000 / Min: 550 3000 Max: 3000 / Min: 650 3000

RPM with L.N.A.
2300 2400 – –

RPM with U.L.N.A.
– 1600 – –

Acoustical Noise
19,3 dB(A) 19,3 dB(A) 19,3 dB(A) 19,3 dB(A)

Acoustical Noise with L.N.A.
13,7 dB(A 14,5 dB(A) – –

Acoustical Noise with U.L.N.A.
– 8,2 dB(A) – –

Size
60x60x25 mm 60x60x25 mm 60x60x25 mm 60x60x25 mm

Award-winning 60x25mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
Ideal replacement for noisy or broken 12V 6cm fans in DVRs, NAS, network and storage devices, 3D printers, etc.
3-pin FLX version provides 3000/2400/1600rpm speed settings via Low-Noise Adaptors to fine-tune the fan for maximum airflow or near-silent operation
Includes anti-vibration mounts, fan screws, Low-Noise & Ultra-Low-Noise Adaptors, extension cable and 3:4-pin adaptor for powering the fan directly from the power supply

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