NF-A14x25r G2 PWM Sx2-PP chromax.black

Next-gen black round 140mm dual fan set

Next-gen 14cm design

Dual fan set

chromax.black edition

NF-A14x25r G2 PWM Sx2-PP chromax.black

Next-gen black round 140mm dual fan set

Next-gen 14cm design

For unprecedented quiet cooling performance

Dual fan set

Ideal for push-pull applications on 14cm CPU coolers

chromax.black edition

All-black version of the award-winning NF-A14x25r G2

Variant:

PWM PWM Sx2-PP

Product line:

State-of-the-art quiet cooling performance for CPU coolers in a sleek all-black design: The chromax.black dual set of the award-winning NF-A14x25r G2 round-frame 140mm fan.

Succeeding the iconic NF-A15, the NF-A14x25r G2 has quickly established itself as a new benchmark for premium quality quiet round-frame 140x25mm fans.

Its advanced aerodynamic engineering featuring a novel Progressive Bend impeller design with Centrifugal Turbulator hub, winglets and a record tight tip clearance of only 0.7mm enables the G2 model to provide a significant boost in performance-to-noise efficiency over its renowned predecessor.

At the same time, its etaPERF motor with SupraTorque can leverage extra torque headroom when required, which makes the NF-A14x25r G2 an ideal upgrade for NH-D15, NH-D15S and NH-U14S heatsinks.

The Sx2-PP set contains two fans that are slightly offset in speed (+/- ~25rpm) in order to avoid undesirable harmonic phenomena such as beat frequencies, which can be heard as intermittent vibrations or periodic humming due to interference. This makes it ideal for equipping coolers with two fans in a push-pull configuration.

Topped off with Noctua’s trusted premium-grade SSO2 bearing, more than 150,000 hours MTTF and a 6-year manufacturer’s warranty, the NF-A14x25r G2 PWM Sx2-PP chromax.black is the perfect choice for users who are looking for a dual 140mm round fan set that combines cutting-edge quality, quietness and performance in an all-black style.

Enostech.com•Nauman Siddique

“In terms of performance, the Noctua fans have a marginal lead of 0.9°C over be quiet! fans but win here comes from the fact that Noctua fans spin at around 1500 RPM to deliver this result, compared to 2000 RPM on be quiet! fans for the result. ”

MasterBitzReviews•David Martinez

“Noctua nos tiene siempre mal acostumbrados a sus productos de calidad y no esta demás decir que es excelente.”

MasterBitzReviews

“Noctua nos tiene siempre mal acostumbrados a sus productos de calidad y no esta demás decir que es excelente.”

AndroidPC.es•Joaquin Prida Trujillo

“Estos nuevos ventiladores Noctua NF-A14x25 G2 y Noctua NF-A14x25r G2 nos ofrecen una calidad elevada y alto rendimiento. Unos productos que nos darán siempre buen resultado durante muchos años.”

Key features

Award-winning NF-A14x25r G2 design

Providing a significant performance boost over the renowned NF-A15, the NF-A14x25r G2 has become a new favourite among quiet cooling enthusiasts. With rave reviews and dozens of awards from hardware media around the world, the G2 model is a proven premium choice for the highest demands.

chromax.black edition

From the impeller and fan frame to the anti-vibration pads, anti-vibration mounts, screws and cables, the chromax.black edition is black from head to toe, making it easy to integrate into all-black PC builds and various other environments.

Push-pull set

Bundling two NF-A14x25r G2 PWM fans that are speed-offset by +/- 25rpm in order to avoid undesired acoustic interaction phenomena, the Sx2-PP set is the ideal choice for push-pull configurations on 140mm class coolers such as the NH-D15, NH-D15S or NH-U14S.

SupraTorque™

Most fans become slightly slower when working against back pressure such as on heatsinks and radiators, which results in reduced performance. Enabled by the new NA-FD6 driver IC, Noctua’s SupraTorque™ technology allows the fan to leverage additional torque headroom when required in order to keep its RPM speed at the desired level no matter the airflow resistance, ensuring consistent performance even in the most demanding conditions.

Further resources

Want to know more on this topic? Explore relevant articles and resources.

All articles

NF-A14x25(r) G2 performance: improvements for heatsinks, radiators and cases

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The next-gen NF-A14x25 G2 takes cooling performance to the next level, but what specific improvements can you expect to see compared to its predecessor?

Our G2 fans’ aerodynamic innovations: keys to superior performance

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Building on the technological innovations of the NF-A12x25, the G2 models represent a further refined, second-generation implementation of this design approach.

etaPERF™ fan motor: new standards in energy efficiency

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Smarter, quieter, more efficient: The etaPERF™ motor maximizes power with minimal energy loss, delivering superior performance and near-silent operation.

SupraTorque™: leveraging torque headroom to boost pressure performance

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SupraTorque™ ensures Noctua fans don’t lose speed under pressure, improving cooling efficiency—especially in high-resistance setups.

Overlapping frequencies of 10 Hz and 9 Hz, shifting in and out of phase

Fan speed offset explained: Beat frequency theory

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When two fans are running together at almost the same speed, their acoustic interaction can lead to undesirable harmonic phenomena, known as beat frequencies.