The next product we present is the NF-A14x25 G2 140mm PWM Chromax.Black. This is a single piece of 140mm that has the "Chromax.Black" treatment, meaning everything is...black from the fan itself to the mounting mechanism.

Opening the retail package, you will find an 140mm fan and a box of accessories:

• NA-RC16 Low-Noise Adaptor (L.N.A.)
• NA-YC1 chromax.black 4-pin PWM splitter cable
• NA-EC1 chromax.black 30cm extension cable
• 4x NA-AV2 chromax.black anti-vibration mounts
• NA-AVG2-LR chromax.black anti-vibration gasket
• 4x NA-AVP1-LR chromax.black load-relief anti-vibration pads
• Black fan screws

The fan itself has the usual 140x140x25 mm dimensions (140 x 140 x 27 mm with anti-vibration pads) and includes a 4-pin PWM with a 20cm + 30cm NA-EC1 extension cable option. The fan includes SSO2 bearing technology and a new design, which, according to Noctua, offers better performance/noise ratio compared with older designs and other manufacturers.

The normal rotation speed is (+/- 10%) 1500 RPM, while with the included L.N.A. adapter, it can drop down to (+/- 10%) 1250 RPM. The performance numbers that Noctua provides are very good, with airflow 155.6 m³/h (L.N.A. 127.1 m³/h), acoustical noise 24.8 dB(A) (L.N.A. 19.7 dB(A)), and static pressure 2.56 mm H₂O (L.N.A. 1.3 mm H₂O). The product includes a 6-year warranty.

At the top, there is a Noctua logo printed.

While at the back, you can see the blade's design. The NF-A14x25 G2 features a unique Progressive Bend impeller with Flow Acceleration Channels and winglets. Whereas the NF-A14x25’s nine impeller blades are bent relatively continuously, the NF-A14x25 G2’s blades are swept backwards close to the hub and progressively bent forward further out, which results in a distinct, almost kink-like shape. Noctua offers a long technical paper on its blade design that users can read and understand more about the overall philosophy and design. The retail price of the NF-A14x25 G2 PWM is EUR 34.90 / USD 34.90 and can be found at most Amazon worldwide stores.