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Noctua NF-F12 PWM Review

ccokeman    -   March 14, 2012
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Specifications:

Size
120x120x25 mm
Connector
4-pin PWM
Bearing               
SSO2
Blade Geometry
Heptaperf™
Frame Technology
Focused Flow™
Rotational Speed (+/- 10%)
1500 RPM
Rotational Speed with L.N.A. (+/- 10%)
1200 RPM
Min. Rotational Speed (PWM)
300 RPM
Airflow
93,4 m³/h
Airflow with L.N.A
74,3 m³/h
Acoustical Noise
22,4 dB(A)
Acoustical Noise with L.N.A.
18,6 dB(A)
Static Pressure 
2,61 mm H2O
Static Pressure with L.N.A.
1,83 mm H2O
Max. Input Power
0,6 W
Max. Input Current
0,05 A
Voltage               
12 V
MTBF
> 150.000 h
Scope of Delivery
Low-Noise Adapter (L.N.A.)
    4-Pin Y-Cable
    30cm Extension Cable
    4 Vibration-Compensators
    4 Fan Screws
Warranty
6 years

 

Features:

  • Focused Flow™ Frame
    Designed for pressure demanding applications such as heatsinks and radiators, the Focused Flow™ frame features eleven stator guide vanes that straighten, channel and focus the airflow, which allows the NF-F12 to rival the performance of conventional fans running at much faster speeds.
  • Varying Angular Distance and Vortex Control Notches
    The NF-F12’s stator guide vanes are set out in Varying Angular Distance and feature Vortex-Control Notches. Both measures help to spread the noise emission over a broader frequency spectrum and thus make the fan’s sound pattern more agreeable to the human ear.
  • Heptaperf™ Impeller
    Custom designed for the new Focused Flow™ frame and to work in tandem with the eleven stator guide vanes, the NF-F12’s seven blade Heptaperf™ impeller has been carefully optimised to achieve a perfect balance between power and quietness.
  • 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
    The NF-F12 is the first fan to 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, the NF-F12 sports a CNC milled bearing shell made entirely from brass.
  • Custom designed PWM IC with SCD
    Supporting fully automatic PWM speed control, the NF-F12 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
    The NF-F12 draws only 0.6W, which is more than 50% less than many fans in the same speed range. This doesn’t only make it eco-friendly but also cuts down the electricity bill: Compared to a typical 2W fan, this allows you to save about half the price of the NF-F12 after 5 years of continuous use.
  • (LNA) Low-Noise Adaptor
    The NF-F12 is supplied with a Low-Noise Adaptor (L.N.A.) that reduces the maximum fan speed from 1500 to 1200rpm. The L.N.A can be used either to run the fan at a fixed speed of 1200rpm or to cap the maximum speed when using automatic PWM control.
  • 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 to connect a second NF-F12 fan to the same PWM fan header for automatic control.
  • 6 years manufacturer’s warranty
    Noctua fans are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the NF-F12 features an MTBF rating of more than 150.000 hours and comes with a full 6 years manufacturer’s warranty.

 

 

 

All information courtesy of Noctua@  http://www.noctua.at/main.php?show=productview&products_id=42&lng=en




  1. Introduction & Closer Look
  2. Specifications & Features
  3. Testing: Setup & Results
  4. Conclusion
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