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Noctua > 
Item#: N82E16835608032

Noctua A-Series NF-A6x25 60mm Blades with AAO Frame, SSO2 Bearing Premium Fan

  • 60mm
  • Rotational Speed (+/- 10%): 3000 RPM Rotational Speed with L.N.A. (+/- 10%): 2400 RPM Rotational Speed with U.L.N.A. (+/- 10%): 1600 RPM Airflow: 29.2 m3/h Airflow with L.N.A.: 23.5 m3/h Airflo
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The NF-A6x25 FLX features advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua’s AAO frame and is a highly optimised, premium quality quiet fan in 60x25mm size. Smooth Commutation Drive technology and Noctua’s reference class SSO2 bearings guarantee 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.

  • newegg Designed to cool The NF-A6x25 impeller features suction side Flow Acceleration Channels to reduce suction side flow separation for better efficiency and lower vortex noise. The reduced motor hub size allows for more blade surface area and thus contributes to the NF-A6x25’s superior airflow and pressure performance.
  • newegg Cools quietly 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. Providing 3000, 2400 and 1600 rpm speed settings via the supplied Low-Noise and Ultra-Low-Noise Adapters, the NF-A6x25 FLX (Flexibility) can be fine-tuned for superior airflow or maximum quietness. And the latest version of Noctua’s advanced Smooth Commutation Drive system ensures superb running smoothness by eliminating torque variations and switching noises.
  • newegg 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
  • newegg Extensive Cabling Options The fan’s short 20cm primary cable minimises cable clutter in typical applications while the supplied 30cm extension provides extended reach when necessary. Both cables are fully sleeved and the supplied 3:4 pin adaptor allows to connect the fan directly to the power supply.

Learn more about the Noctua NF-A6x25

Quick Info


  • Limited Warranty period (parts): 6 years
  • Limited Warranty period (labor): 6 years

Customer Reviews of the Noctua NF-A6x25

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  • Paul B.
  • 8/24/2014 1:33:13 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week

4 out of 5 eggsInstalled as CPU Fan

Pros: Good fan with good airflow. The LNA adapters are nice. I'm running mine at 1600rpm with the RC12 adapter and I put the RC10 adapter on my case fan.

Cons: I took away 1 egg because mine makes a ticking noise. It seems like the blades are barely hitting something. I checked and it's not the wires. Didn't try without the LNA adapter.

Other Thoughts: Good quiet fan except for the ticking noise. It's still quieter than my old CPU fan. Also note, this fan is 25mm thick. My old CPU fan was 10mm thick.

Did you find this review helpful? Yes No

  • Brian S.
  • 3/20/2014 9:46:23 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsPerfect for Korg Kronos fan update

Pros: I took out the noisy oem fan in the Korg Kronos professional music workstation and replaced it with the JEM.. :) Noctua did it right.. It even has great airflow for a small little fan.

Cons: none

Other Thoughts: none

Did you find this review helpful? Yes No

  • Nick K.
  • 12/13/2013 11:35:44 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsgood stuff

Pros: purchased 4 of these for my dynatron a86g heatsinks, work perfect and pretty dang quiet

Cons: none, price?

Did you find this review helpful? Yes No

  • David H.
  • 12/2/2013 9:42:24 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week

5 out of 5 eggsjust some math

Pros: Very quiet, decent airflow, good static pressure.

6 year warranty?

Cons: Price, I guess.

Other Thoughts: Air flow in CFM:
high: 17.2
medium: 13.8
low: 9.8

Static pressure:
high: 2.18
medium: 1.41
low: .61

3 out of 3 people found this review helpful. Did you? Yes No

  • Eric S.
  • 11/23/2013 10:02:57 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsExpensive, but good.

Pros: Peerless build quality
Durable & Reliable
Whisper Quiet
Includes nearly any accessory you might need
Excellent packaging

Cons: Cost - Expensive; but you pay a heavy premium for what may be the finest fans available

Noise - Don't get me wrong. These are among the quietest fans I've ever used. There are quieter ones, but finding one that is quieter & built this well is exceedingly difficult. I started using Noctua fans roughly 3-4 years ago. At that time I was living in Korea, and noticed that humidity can have quite an impact on noise. After a nice wet summer, all of my Noctua fans started to make a lot more noise (kind of a soft, low grumbling sound) than when new (still fairly quiet, but it was a large difference). Now I am in an arid part of the US, and haven't seen the same issues.

Other Thoughts: If these were quite a bit cheaper, I would replace every fan in every system I own with Noctua fans.

If you live in a dry area, keep the dust from building up, and you should have a very quiet and reliable fan.

2 out of 3 people found this review helpful. Did you? Yes No

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Item#: N82E16835608032
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