Noctua Cooling Solutions
Noctua's premium cooling components are internationally renowned for their superb quietness, exceptional performance and quality.
Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua’s AAO frame, the NF-A6x25 FLX is a highly optimised, premium quality quiet fan in 60x25mm size. Smooth Commutation Drivetechnology and Noctua’s reference class SSO2 bearings ensure superb running smoothness and excellent long-term stability. Topped off with modular cabling and Low-Noise Adaptors, the NF-A6x25 is a premium choice for the highest demands.
AAO frame
Noctua's AAO (Advanced Acoustic Optimisation) frames feature integrated anti-vibration pads as well as Noctua's proprietary Stepped Inlet Design and Inner Surface Microstructures, both of which further refine the fan's performance/noise efficiency.
Reduced motor hub size
Thanks to its streamlined, compact motor design, the NF-A6x25's motor hub is smaller than with conventional 6cm fans. This allows for more blade surface area and thus contributes to the NF-A6x25's superior airflow and pressure performance.
SSO2 bearing
The NF-A6x25 features the further optimised second generation of Noctua's renowned, time-tested SSO bearing. With SSO2, the rear magnet is placed closer to the axis to provide even better stabilisation, precision and durability.
Flow Acceleration Channels
The NF-A6x25 impeller features suction side Flow Acceleration Channels. By speeding up the airflow at the crucial outer blade regions, this measure reduces suction side flow separation and thus leads to better efficiency and lower vortex noise.
Scope of Delivery
- Low-Noise Adapter (L.N.A.)
- Ultra-Low-Noise Adapter (U.L.N.A.)
- 3:4-Pin Adaptor
- 30cm Extension Cable
- 4 Vibration-Compensators
- 4 Fan Screws
Smooth Commutation Drive 2
The latest version of Noctua's advanced Smooth Commutation Drive system ensures superb running smoothness by eliminating torque variations and switching noises. This makes the NF-A6x25 remarkably quiet even at very close distances.
 NF-A6x25 PWM |  NF-A6x25 FLX |  NF-A6x25 5V PWM |  NF-A6x25 5V | |
|---|---|---|---|---|
| Customer Reviews | — | — | — | — |
| Price | — | — | — | — |
| Connector | 4-pin PWM | 3-pin | 4-pin PWM | 3-pin |
| Voltage | 12V | 12V | 5V | 5V |
| RPM | Max: 3000 / Min: 550 | 3000 | Max: 3000 / Min: 650 | 3000 |
| RPM with L.N.A. | 2300 | 2400 | - no data | - no data |
| RPM with U.L.N.A. | - no data | 1600 | - no data | - no data |
| Acoustical Noise | 19,3 dB(A) | 19,3 dB(A) | 19,3 dB(A) | 19,3 dB(A) |
| Acoustical Noise with L.N.A. | 13,7 dB(A | 14,5 dB(A) | - no data | - no data |
| Acoustical Noise with U.L.N.A. | - no data | 8,2 dB(A) | - no data | - no data |
| Size | 60x60x25 mm | 60x60x25 mm | 60x60x25 mm | 60x60x25 mm |
Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua’s AAO frame, the NF-A6x25 FLX is a highly optimised, premium quality quiet fan in 60x25mm size. Smooth Commutation Drivetechnology and Noctua’s reference class SSO2 bearings ensure superb running smoothness and excellent long-term stability. Topped off with modular cabling and Low-Noise Adaptors, the NF-A6x25 is a premium choice for the highest demands.
AAO frame
Noctua's AAO (Advanced Acoustic Optimisation) frames feature integrated anti-vibration pads as well as Noctua's proprietary Stepped Inlet Design and Inner Surface Microstructures, both of which further refine the fan's performance/noise efficiency.
Reduced motor hub size
Thanks to its streamlined, compact motor design, the NF-A6x25's motor hub is smaller than with conventional 6cm fans. This allows for more blade surface area and thus contributes to the NF-A6x25's superior airflow and pressure performance.
SSO2 bearing
The NF-A6x25 features the further optimised second generation of Noctua's renowned, time-tested SSO bearing. With SSO2, the rear magnet is placed closer to the axis to provide even better stabilisation, precision and durability.
Flow Acceleration Channels
The NF-A6x25 impeller features suction side Flow Acceleration Channels. By speeding up the airflow at the crucial outer blade regions, this measure reduces suction side flow separation and thus leads to better efficiency and lower vortex noise.
Scope of Delivery
- Low-Noise Adapter (L.N.A.)
- Ultra-Low-Noise Adapter (U.L.N.A.)
- 3:4-Pin Adaptor
- 30cm Extension Cable
- 4 Vibration-Compensators
- 4 Fan Screws
Smooth Commutation Drive 2
The latest version of Noctua's advanced Smooth Commutation Drive system ensures superb running smoothness by eliminating torque variations and switching noises. This makes the NF-A6x25 remarkably quiet even at very close distances.
NF-A6x25 PWM | NF-A6x25 FLX | NF-A6x25 5V PWM | NF-A6x25 5V | |
|---|---|---|---|---|
| Customer Reviews | — | — | — | — |
| Price | — | — | — | — |
| Connector | 4-pin PWM | 3-pin | 4-pin PWM | 3-pin |
| Voltage | 12V | 12V | 5V | 5V |
| RPM | Max: 3000 / Min: 550 | 3000 | Max: 3000 / Min: 650 | 3000 |
| RPM with L.N.A. | 2300 | 2400 | - no data | - no data |
| RPM with U.L.N.A. | - no data | 1600 | - no data | - no data |
| Acoustical Noise | 19,3 dB(A) | 19,3 dB(A) | 19,3 dB(A) | 19,3 dB(A) |
| Acoustical Noise with L.N.A. | 13,7 dB(A | 14,5 dB(A) | - no data | - no data |
| Acoustical Noise with U.L.N.A. | - no data | 8,2 dB(A) | - no data | - no data |
| Size | 60x60x25 mm | 60x60x25 mm | 60x60x25 mm | 60x60x25 mm |
Noctua Cooling Solutions
Noctua's premium cooling components are internationally renowned for their superb quietness, exceptional performance and quality.
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