Noctua NF-A6x25 FLX, Premium Quiet Fan, 3-Pin (60mm, Brown)
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Desertpilot
> 3 dayWorks great at very low noise level.
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Derk Wehler
> 3 dayLike other reviews mentioned, this is very quiet. And being an overpriced brand name, will hopefully last well. But it doesnt move a lot of air, and my biggest objection is they didnt include screws. I had to go to the hardware store and of course they didnt have any #4 screws long enough... They include the wide screws you might use to mount it to a case, but I was replacing a CPU fan atop a heat sink. The previous one was only 10mm, and had screws, but this one is 25mm thick (which was fine cause I have the room for it) and did not include 30mm screws. Had a BUNCH of other adaptors, etc, that I didnt need, but not screws that were long enough to go through the fan.
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pvillerick
> 3 dayworked well as it should. nice & quiet. Yea id buy it again. really it is a fan after all .
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3d home theater
> 3 dayQuiet, smooth, and long lasting like all noctuas. Ive had dozens of them and never had to replace one, they last and they work.
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Anastasia Beaverhousen
> 3 dayi bought 4 noctua fans and love them. they are quiet and built solid. i did not use the sound dampeners and still hear no vibration
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Jennifer
> 3 dayThese are great fans. I have several devices all cooled by fans so the combined noise was significant. I swapped out several fans with Noctua fans and the noise level is much less. I like the rubber mounts and options for wire connectors.
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R. Savola
> 3 dayI chose this fan because of the quality of manufacturing and reputation. It is to replace a cooling fan for a 12 volt power supply and works great, nearly silent in comparison to the original and easy installation.
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J. Andrews
> 3 dayWe use a pair of these as exhaust fans in our marine head, where they run 24/7 in a high-moisture enclosed tube. They are DEAD quiet, which is really important on a sailboat at night, and have outlasted every other fan weve put in that highly-corrosive location. Ill certainly keep a couple of these around for other ventilation applications on the boat.
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Cheneyx
> 3 dayUsed to replacement Dreamcast Fan , Quiet and works great.
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David E. Minigh
> 3 dayNo problems at all. Well made fan with no shortcuts that I can find.
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.
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Reduced motor hub sizeThanks 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 bearingThe 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 ChannelsThe 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
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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.
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| NF-A6x25 PWM | NF-A6x25 FLX | NF-A6x25 5V PWM | NF-A6x25 5V | |
| 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 | - | - |
| RPM with U.L.N.A. | - | 1600 | - | - |
| 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) | - | - |
| Acoustical Noise with U.L.N.A. | - | 8,2 dB(A) | - | - |
| Size | 60x60x25 mm | 60x60x25 mm | 60x60x25 mm | 60x60x25 mm |