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Noctua NF-A14x25 G2 PWM Sx2-PP 140mm PWM Case Fan (2-Pack)

3,190.-
est. delivery in 2-4 days
Key Specifications

  • Up to 1500 RPM PWM

  • Connector 4-pin PWM Header

  • Dimension 140x140x25mm

  • Max Noise Level: 24.8 dBa

  • MaxAirflow: 107.3 m³/h

  • Refined blade geometry

SKU:#080386 Warranty6 Years by Noctua Product No.:NF-A14X25 G2 PWM SX2-PP Short link:http://i.nvade.it/kUy See specifications from the manufacturer

The NF-A14x25 G2 PWM Sx2-PP is a set of two NF-A14x25 G2 PWM square-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 as intermittent vibrations or periodic humming due to interference, which can be heard as beat frequencies. 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’ novel etaPERF™ motor and its NE-FD6 driver IC that achieves extremely precise speed control and, thanks to its SupraTorque™ feature, 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.

Warranty

Warranty
6 Years by Noctua
Installments
0.74%
4 m.
Pay monthly 821.-
0.74%
4 m.
Pay monthly 821.-
0.74%
4 m.
Pay monthly 821.-
0.74%
4 m.
Pay monthly 821.-
1.16%
4 m.
Pay monthly 834.-
0.74%
4 m.
Pay monthly 821.-
0.74%
4 m.
Pay monthly 821.-
0.74%
4 m.
Pay monthly 821.-
0.74%
4 m.
Pay monthly 821.-
0.74%
3 m.
Pay monthly 1,087.-
0.74%
3 m.
Pay monthly 1,087.-
0.74%
3 m.
Pay monthly 1,087.-
1.16%
3 m.
Pay monthly 1,100.-
0.74%
3 m.
Pay monthly 1,087.-
0.74%
3 m.
Pay monthly 1,087.-
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