NF-S12A PWM:

The NF-S12A PWM's key specifications are listed below, and more information can be found at the official product page on the Noctua site. Of special interest with this unit is that it features a 4-pin PWM power connector which allows for fine speed control through its allowable range of 300-900RPM. Most motherboards feature these connectors, and some aftermarket fan speed controllers will, too.

Specifications:

» Size 120x120x25 mm
» Connector 4-pin PWM
» Bearing SSO2
» Blade Geometry S-Series with Anti-Stall Knobs
» Frame Technology AAO (Advanced Acoustic Optimisation)
» Rotational Speed (+/- 10%) 1200 RPM
» Rotational Speed with L.N.A. (+/- 10%) 900 RPM
» Min. Rotational Speed (PWM) 300 RPM
» Airflow 107,5 m³/h
» Airflow with L.N.A. 83,2 m³/h
» Acoustical Noise 17,8 dB(A)
» Acoustical Noise with L.N.A. 10,7 dB(A)
» Static Pressure 1,19 mm H2O
» Static Pressure with L.N.A. 0,73 mm H2O
» Max. Input Power 1,44 W
» Max. Input Current 0,12 A
» Voltage 12 V
» MTBF > 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
» Warranty 6 years



The next image shows the fan installed at the exhaust position in the HTPC where we saw the NF-S12A FLX installed at the inlet. With the NF-S12A PWM connected to a PWM fan header on the motherboard, the installation was plug and play with no additional adjustments necessary since the motherboard's BIOS was set to run the fans quietly.