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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 size140 mm
  • Number of fans1 Fan
  • Fan controlNo Controller
  • Fan depth25 mm
  • Bearing designSSO2-Bearing (Self-stabilising oil-presure bearing)
  • Rotational speed800 RPM +/-10% 650 RPM +/-10% (with L.N.A adapter)

Model ULN

  • 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.

How it compares

Measured against everything we stock in PC Cooling Fans, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 63% of the 8,339 comparable items (median $19.99).
Fan size 140 mm
Higher than about 80% of the 1,114 comparable items (median 120 mm).

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Specifications

Product
Brand nameNoctua
Model nameNF-A14 ULN
Product typeCase Fan
Product colorBrown
Performance
Rotational speed800 RPM +/-10%
650 RPM +/-10% (with L.N.A adapter)
Airflow rate79.8 m3/h (standard)
66.4 m3/h (w/L.N.A.)
Power
Power input connector3 Pin
Size & build
Fan size140 mm
Number of fans1 Fan
Fan depth25 mm
Bearing designSSO2-Bearing (Self-stabilising oil-presure bearing)
Product dimensions140 × 140 × 25 mm
Shipping weight0.35 kg
Package size241 × 173 × 36 mm
Compatibility
Compatible withCPU Cooler, Water-Cooling Radiator and Case
Environment & compliance
Operating noise11.9 dB(A) standard
9.1 dB(A) (w/ L.N.A)
More details
Fan controlNo Controller
LED lightingNo

Other versions of this model

2 more in the same range

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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