All stock codes associated to this product
NFA14X25 G2 PWM SX2PP, NF-A14X25 G2 PWM SX2-PP
Next-gen 14cm design
For unprecedented quiet cooling performance
State-of-the-art engineering
Progressive Bend impeller, Sterrox LCP material & ultra tight tip clearance
Dual fan set
For push-pull and side-by-side usage
The NF-A14x25 G2 PWM Sx2-PP is a set of twoNF-A14x25 G2 PWMsquare-frame 140mm fans that are offset in speed, which can be beneficial in push-pull operation as well as in situations where two fans are operating side by side, such as in case cooling applications or on 280mm water cooling radiators.
When two fans are running at almost the same, constant speed in a push-pull configuration or, albeit to a lesser extent, side by side, their acoustic interaction can lead to undesirable harmonic phenomena such asbeat frequencies, which can be heard as intermittent vibrations or periodic humming due to interference. Therefore, the two NF-A14x25 G2 PWM fans contained in the Sx2-PP set are slightly offset in speed (+/- ~25rpm) in order to avoid such phenomena.
This fine-tuning is made possible by the fans noveletaPERFmotor and its NE-FD6 driver IC that achieves extremely precise speed control and, thanks to itsSupraTorquefeature, can leverage extra torque headroom to keep the exact desired speed even when working against significant flow resistance such as on water cooling radiators and heatsinks. With one fan running ~25rpm slower (PPA) and one ~25rpm faster (PPB), the overall cooling performance can be kept the same while efficiently preventing intermittent vibrations or periodic humming.
Since the perception of beat frequencies can vary depending on psychoacoustic preferences, users can easily further optimise acoustics by slowing the PPA fan down a little more through PWM control or the supplied Low-Noise-Adaptor, which will result in an even smoother sound signature due to the increased offset.
Size (Form factor) | 140 x 140 x 25 mm (square) |
Speed range | |
Airflow (max.) | 155.6 m/h (91.58 CFM) |
Acoustical noise (max.) | 24.8 dB(A) |
Static pressure (max.) | 2.56 mm HO |
Rated voltage | 12 V |
Connector | 4-pin |
Colour | Brown |
Warranty | 6 years |
- NF-A14x25 G2 PWM PPA
- NF-A14x25 G2 PWM PPB
- 2x NA-RC16 Low-Noise Adaptor (L.N.A.)
- NA-YC1 4-pin PWM splitter cable
- 2x NA-EC1 30cm extension cable
- 8x NA-AV2 anti-vibration mounts
- 2x NA-AVG2-LR anti-vibration gasket for water cooling radiators
- 8x NA-AVP1-LR load-relief anti-vibration pads
- Fan screws
