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

Ships from United States.

Sold by Noctua Cooling Solutions a-seller and Shipped by Newegg

Purchases from these Sellers are generally covered under our Newegg Marketplace Guarantee.
Marketplace Seller
  • 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
  • Airflow with U.L.N.A.: 16.7 m3/h
  • SSO2
  • Acoustical Noise: 19.3 dB(A)
  • Acoustical Noise with L.N.A.: 14.5 dB(A)
  • Acoustical Noise with U.L.N.A.: 8.2 dB(A)

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  • Specifications
  • Warranty & Returns
  • Reviews

Learn more about the Noctua NF-A6x25 FLX.

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 6 years
  • Limited Warranty period (labor): 6 years
  • Read full details
Ownership: 1 day to 1 week
Verified Owner
5/ 5
Very pleased!

Pros: I bought these to replace the extremely loud fans on my heatsinks and they work amazing. They are very quiet and provided adapters and extensions with the fan. I would definitely buy Noctua again.

Cons: None

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Ownership: 1 month to 1 year
Verified Owner
5/ 5
Best ever!

Pros: Everything. This thing has no noise. I made a HTPC using a small decorative chest and an ITX motherboard that is powered by a laptop power supply. So I wanted as little or no noise as possible. I cut a hole in the back and installed this fan, and no kidding, I can hardly tell it is running! I'm ordering another one or two for the next project, a SWANN Home security DVR that has a 40MM or so fan and is so loud I can hear it downstairs.. It's mostly acoustic due to the case design, so yes, I'm making a custom quiet case like my HTPC.. Not only for sound, but also to hide it

Cons: None so far, been running for a few moths straight. Still silent

1 out of 1 people found this review helpful. Did you?
Ownership: 1 week to 1 month
Verified Owner
1/ 5
Flawed blade/ housing design, DOESN'T FLOW AIR

Pros: Silent... which would be a pro if this fan actually moved any air what so ever (seriously!).

Cons: Doesn't function

Other Thoughts: Mounted fan on perforated metal like what you would see on pretty much any computer case fan mount. Here's why this fan is absolute garbage:

If there is even the slightest obstruction to this fan's flow, ie grates or slots, THIS FAN WILL NOT FUNCTION. What happens is, due to the fact that the gap between the fan blade and interior of its frame is so huge, the fan blades push the air through the blades, and back out through the huge gap previously mentioned. I really have no idea how this fan ever made it past R&D, and I really don't understand how they ever came to the conclusion that they should charge $15 for it. AVOID THIS FAN. EXTREMELY flawed design/ non-functional.

1 out of 6 people found this review helpful. Did you?
Ownership: 1 day to 1 week
4/ 5
Installed 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.

1 out of 1 people found this review helpful. Did you?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Perfect 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

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Ownership: 1 month to 1 year
Verified Owner
5/ 5
good 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?
Ownership: 1 day to 1 week
5/ 5
just 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?
Ownership: 1 month to 1 year
Verified Owner
5/ 5
Expensive, 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?
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