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Square brown 140mm case fan with smooth beige blades and anti-vibration corners

Noctua

Noctua NF-A14 ULN 140mm 3-Pin Case Fan Brown

SKU CH-4ZCJ-C6K8H MPN NF-A14 ULN

Ultra-quiet 140 mm case fan with SSO2 bearing runs at 800 RPM for 79.8 m³/h airflow at 11.9 dB(A)

  • Fan Counts1 Fan
  • Fan ControllerNo Controller
  • TypeCase Fan
  • CompatibilityCPU Cooler, Water-Cooling Radiator and Case
  • Fan Size140mm
  • Fan Thickness25mm

Model ULN

Struck-through versions exist but are not stocked here.

  • Ultra-quiet 9.1 dB(A) operation with supplied Low-Noise Adaptor
  • 800 RPM standard speed drops to 650 RPM for silent running
  • 8 m³/h airflow delivers strong cooling at low noise
  • Square 140 mm frame with 124.5 mm spacing fits radiators and cases
  • SSO2 bearing rated beyond 150,000 hours for long life

Premium quiet 140mm case fan

The Noctua NF-A14 ULN is a 140mm square-frame case fan built for ultra-low-noise cooling. It targets silent-PC enthusiasts who need near-silent airflow for radiators, cases or CPU coolers. The 3-pin connector provides simple voltage control without PWM complexity.

3-pin voltage control limits

A 3-pin connector adjusts speed by varying voltage, so the motherboard or controller must support voltage regulation for quiet operation. Without PWM the fan cannot report its exact RPM back to the system for closed-loop control. The supplied Low-Noise Adaptor drops voltage further to reach the lower speed setting.

800 RPM airflow and acoustic headroom

At the standard 800 RPM the fan moves 79.8 m3/h at 11.9 dB(A), suitable for low-restriction case intake or exhaust. With the adaptor fitted it runs at 650 RPM, delivering 66.4 m3/h at 9.1 dB(A) for stricter silence targets. Dense radiator fins or long duct runs will reduce airflow below these open-air figures.

Highlights

  • Ultra-quiet 9.1 dB(A) operation with supplied Low-Noise Adaptor
  • 800 RPM standard speed drops to 650 RPM for silent running
  • 8 m³/h airflow delivers strong cooling at low noise
  • Square 140 mm frame with 124.5 mm spacing fits radiators and cases
  • SSO2 bearing rated beyond 150,000 hours for long life

Specifications

BrandNoctua
ModelNF-A14 ULN
Fan Counts1 Fan
Fan ControllerNo Controller
TypeCase Fan
CompatibilityCPU Cooler, Water-Cooling Radiator and Case
Fan Size140mm
Fan Thickness25mm
Bearing TypeSSO2-Bearing (Self-stabilising oil-presure bearing)
RPM800 RPM +/-10%
650 RPM +/-10% (with L.N.A adapter)
Air Flow79.8 m3/h (standard)
66.4 m3/h (w/L.N.A.)
Noise Level11.9 dB(A) standard
9.1 dB(A) (w/ L.N.A)
Power Connector3 Pin
ColorBrown
LEDNo
FeaturesSucceeding the award-winning NF-P14
Square 140mm frame
Flow Acceleration Channels
AAO Frame
Stepped Inlet Design
Inner Surface Microstructures
Integrated Anti-Vibration Pads
SSO2 Bearing
Metal bearing shell
Smooth Commutation Drive 2
2 speed settings for full flexibility
Extensive cabling options
Ultra-Low Power Consumption
Dimensions140 x 140 x 25mm
Shipping weight0.35 kg
Package size241 × 173 × 36 mm

Other versions of this model

2 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Should I pick the 800 RPM or 650 RPM setting for my build?

Run the fan at 800 RPM for maximum airflow of 79.8 m³/h at 11.9 dB(A), or attach the supplied Low-Noise Adaptor to drop it to 650 RPM for 66.4 m³/h at 9.1 dB(A) when silence matters most.

What does 11.9 dB(A) mean once the fan is installed in my case?

At 11.9 dB(A) the fan is barely audible in a quiet room; with the Low-Noise Adaptor fitted it falls to 9.1 dB(A), making it practically inaudible against typical ambient noise.

How does the 3-pin connector limit speed control?

The 3-pin Molex connector allows voltage-based speed regulation from the motherboard or the included Low-Noise Adaptor, but does not support PWM duty-cycle control.

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