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Noctua 140mm/150mm Case Fan Roundup Review


Noctua 140mm & 150mm Case fan Specifications:

140x150x25 mm
140x140x25 mm
4-pin PWM
Blade Geometry
A-Series with Flow Acceleration Channels
Frame Technology
AAO (Advanced Acoustic Optimization)
Rotational Speed (+/- 10%)
1200 RPM
800 RPM
1200 RPM
Rotational Speed with L.N.A. (+/- 10%)
900 RPM
650 RPM
1050 RPM
Rotational Speed with U.L.N.A. (+/- 10%)
900 RPM
Min. Rotational Speed (PWM)
300 RPM
115,5 m³/h
79,8 m³/h
115,5 m³/h
Airflow with L.N.A.                         
88,7 m³/h
66,4 m³/h
101,9 m³/h
Airflow with U.L.N.A.
88,7 m³/h
Acoustical Noise
19,2 dB(A)
11,9 dB(A)
19,2 dB(A)
Acoustical Noise with L.N.A.
13,8 dB(A)
9,1 dB(A)
16,4 dB(A)
Acoustical Noise with U.L.N.A.
13,8 dB(A)
Static Pressure                 
1,51 mm H2O
0,69 mm H2O
1,51 mm H2O
Static Pressure with L.N.A.               
0,89 mm H2O
0,42 mm H2O
1,18 mm H2O
Static Pressure with U.L.N.A.               
0,89 mm H2O
Max. Input Power
0,48 W
0,96 W
Max. Input Current
0,08 A
0,08 A
12 V
> 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
3:4 Pin Adaptor (NF-A14ULN)
Low-Noise Adaptor (L.N.A.)
Ultra-Low-Noise Adaptor (U.L.N.A.)
3:4-Pin Adaptor
30cm Extension Cable
4 Vibration-Compensators
4 Fan Screws
6 years


Noctua 140mm & 150mm Case fan Features:

  • Flow Acceleration Channels:  The 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.
  • 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.
  • 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.
  • 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.
  • SSO2 Bearing:  Both the NF-A14 and NF-A15 feature 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.
  • Metal bearing shell:  In order to guarantee the highest possible degree of manufacturing precision, minimum tolerance and excellent long-term stability, both the NF-A14 and NF-A15 sports a CNC milled bearing shell made entirely from brass.
  • Custom designed PWM IC with SCD: Supporting fully automatic PWM speed control, the NF-A15 uses Noctua’s novel, custom designed NE-FD1 PWM IC that integrates Smooth Commutation Drive (SCD) technology. By providing smoother torque impulses, SCD suppresses PWM switching noises and thus makes the fan quieter at lower speeds.
  • Ultra-Low Power Consumption: Despite their further improved performance, the NF-A14 ULN consumes only 0.48W of power, and both the NF-A14 FLX and NF-A15 consume only 0.96W of power (which amounts to a reduction of about 20% as compared to its predecessor). This doesn’t only make it eco-friendly but also helps to cut down the electricity bill!
  • (LNA) Low-Noise Adaptor: The NF-A14 and NF-A15 are supplied with a Low-Noise Adaptor (L.N.A.) that reduces the maximum fan speed from 1200 to 900rpm for the NF-A15 PWM, 1200 to 1050rpm for the NF-A14 FLX, and 800 to 650rpm for the NF-A14 ULN.
  • (ULNA) Ultra-Low-Noise Adaptor: The NF-A14 FLX is supplied with an Ultra-Low-Noise Adaptor (L.N.A.) that reduces the maximum fan speed from 1200 to 900rpm for maximum quietness.
  • 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 for the NF-A15 allows to connect a second NF-A15 fan to the same PWM fan header for automatic control. The NF-A14's are supplied with a 3:4 pin adaptor, which allows them to connect directly to the power supply.
  • 6 years manufacturer’s warranty:  Noctua fans are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the NF-A14 and NF-A15 features an MTBF rating of more than 150.000 hours and comes with a full 6 years manufacturer’s warranty.




All information is courtesy of Noctua @ http://www.noctua.at/main.php?show=produkte&lng=en

  1. Noctua 140mm/150mm Case Fan Roundup: Introduction & Closer Look
  2. Noctua 140mm/150mm Case Fan Roundup: Closer Look (Continued)
  3. Noctua 140mm/150mm Case Fan Roundup: Specifications & Features
  4. Noctua 140mm/150mm Case Fan Roundup: Testing: Watercooling Radiator Setup & Results
  5. Noctua 140mm/150mm Case Fan Roundup: Testing: CPU Air Cooling Setup & Results
  6. Noctua 140mm/150mm Case Fan Roundup: Conclusion
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