Noctua NF-A6x25 FLX, Premium Quiet Fan, 3-Pin (60mm, Brown)
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Bear
> 24 hourIve got a Quantum SuperLoader 3 LTO5 Autoloader that I use for backing up ~24TB of home data. The SuperLoader was noisier than the rest of my server equipment - This includes a ProLiant ML350G6 with 8 hard drives in it. I was spending time on Amazon trying to look at noise reduction blankets and the like before I thought to check why the SuperLoader was so loud. It was its Nidec 60mm fan. The SuperLoader is made to operate in a crowded rack with an ambient temperature of up to 95F. My SuperLoader sits on an Anthrobench with 9 rubber feet keeping air beneath it, in an air conditioned room that never gets above 80F. I dont need the 28CFM the noisy little bugger in it puts out. The ~18CFM this fan puts out, I figured, would be fine.
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Earnie
> 24 hourI purchased this item to replace the noisy fan currently in use. Not only is this fan quieter, I cant hear it at all! Fan arrived in a fancy box with three different sets of mounting hardware and three different wiring adapters. The additional items should allow this fan to fit almost all mounting conditions. I wonder what part of the purchase price paid for the fancy box? If quiet is your objective, purchase this fan! I recommend this product!
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Derk Wehler
> 24 hourLike 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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CM
> 24 hourChelsio NICs are great, but they often go upto 100+ Celsius easy, causing all sorts of issues. Thats when this little handy Noctua fan comes in play. It didnt add any noise (fan curved in BIOS) to my current setup, while stopping my 10Gbps SFP+ NIC from crashing.
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Anastasia Beaverhousen
> 24 houri 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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daniellsonn69
> 24 hourBEST and quitest fan I have EVER used for as much CFM, low RPM, this fan is the BEST!!!
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Mntbighker
> 24 hourWhat can we say at the point. They pretty much knock it out of the park every time. Its why everyone wants to replace EVERY fan with a Noctua. #eyeroll
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J.M.
> 24 hourIm using the lowest noise connector and I cant hear the fan at all. Exactly what I needed.
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Tim Ng
> 24 hourMy Qidi X-Max 3D Printer have a noisy stock fan in its power supply (Meanwell SE-600) that sounds like a hairdryer running all the time. Replacing the stock fan with this Noctua was very simple, I strip the wires, and solder them to the 2-pin connector of the stock fan. The printer now is extremely quiet when idling, so much so that I cant even hear the Noctua fan humming along. Highly recommended for those looking to replace their 3d printers fans.
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Luis Alexander
> 24 hourLo mejor que hay
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 |