Noctua NF-A6x25 PWM 60mm Cooling Fan

Noctua NF-A6x25 PWM 60mm Cooling Fan
The NF-A6x25 is a highly optimised, premium quality quiet fan in 60x25mm size. The PWM version sports Noctua’s custom designed NE-FD1 IC for fully automatic speed control via 4-pin fan headers and comes with a Low-Noise-Adaptor to reduce the maximum speed during PWM control from 3000 to 2100rpm. Its superb running smoothness, SSO2 bearing and Noctua’s trusted premium quality make it an elite choice for the highest demands.

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.

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.

Stepped Inlet Design
Noctua's Stepped Inlet Design adds turbulence to the influx in order to facilitate the transition from laminar flow to turbulent flow, which reduces tonal intake noise, improves flow attachment and increases suction capacity, especially in space-restricted environments

Inner Surface Microstructures
With the tips of the fan blades ploughing through the boundary layer created by the Inner Surface Microstructures, flow separation from the suction side of the blades is significantly suppressed, which results in reduced blade passing noise and improved airflow and pressure efficiency.

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.

Integrated Anti-Vibration Pads
Integrated Anti-Vibration Pads made from extra-soft silicone minimise the transmission of minute vibrations while maintaining full compatibility with all standard mounting systems and fan clips used on heatsinks.

Stops at 0% PWM
When the fan is set to 0% PWM duty cycle by the motherboard or PWM fan controller, it will stop. This makes it ideal for creating setups with semi-passive cooling that automatically turn the fans off and thus run completely silent at idle if thermals allow.

Extensive cabling options
The fan's short 20cm primary cable minimises cable clutter in typical applications while the supplied 30cm extension provides extended reach when necessary. Both cables are fully sleeved and a 4-pin y-cable allows the connection of a second NF-A6x25 PWM fan to the same PWM fan header for automatic control.

Technical Detail
Brand : Noctua
Modal : NF-A6x25

Technical Spec
Size : 60x60x25 mm
Mounting hole spacing : 50x50 mm
Connector & pin-configuration : 4-pin PWM
Cable length : 20cm + 30cm NA-EC1 extension cable
Bearing : SSO2
Blade geometry : A-Series with Flow Acceleration Channels
Frame technology : AAO (Advanced Acoustic Optimisation)
Rotational speed (+/- 10%) : 3000 RPM
Rotational speed with L.N.A. (+/- 10%) : 2300 RPM
Min. rotational speed @ 20% PWM (+/-20%) : 550 RPM
Airflow : 29,2 m³/h
Airflow with L.N.A. : 22,6 m³/h
Acoustical noise : 19,3 dB(A)
Acoustical noise with L.N.A. : 13,7 dB(A)
Static pressure : 2,18 mm Hâ‚‚O
Static pressure with L.N.A. : 1,29 mm Hâ‚‚O
Max. input power ": 0,96 W
Max. input current : 0,08 A
Operating voltage : 12 V
MTTF > : 150.000 h

Scope of delivery 
Low-Noise Adaptor (L.N.A.)
4-Pin Y-Cable
30cm Extension Cable
4 Vibration-Compensators
4 Fan Screws