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Noctua Ultra Silent 140mm Fan NF-P14 FLX (Brown)

4.7 out of 5 stars 64 customer reviews
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  • Providing 1200, 900 and 750 rpm speed settings the supplied Low-Noise, Ultra-Low-Noise Adapters, the NF-P14 FLX can be fine-tuned for superior airflow
  • The latest version of Noctua advanced SCD drive system ensures superb running smoothness by eliminating torque variations and switching noises.
  • Metal reinforcements, SCD2 technology and Noctua premium grade SSO-Bearing guarantee exceptional running smoothness and excellent long-term stability
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Frequently Bought Together

  • Noctua Ultra Silent 140mm Fan NF-P14 FLX (Brown)
  • +
  • Noctua NF-P12 120mm x 25mm Cooling Fan 3-Pin - 1300 RPM
  • +
  • Noctua NF-F12 PWM Cooling Fan
Total price: $58.93
Buy the selected items together


Technical Details

  • Brand Name: Noctua
  • Model Number: NF-P14-FLX
  • Color: Brown
  • Manufacturer Warranty Description: 1yr/Parts & Labor

Product Description

The Noctua NF-P14 FLX follows in the footsteps of the successful NF-P12, the NF-P14 is a highly optimised, premium quality 140mm fan with Vortex-Control Notches for superb quietness and outstanding aerodynamic efficiency. Metal reinforcements, SCD2 technology and Noctua premium grade SSO-Bearing guarantee exceptional running smoothness and excellent long-term stability. Using the same hole-spacing as common 120mm fans and achieving a superior airflow/noise ratio, the NF-P14 is ideal for upgrading 120mm CPU or case fans. At an impeller diameter of almost 140mm, it is critical to avoid unbalance due to the bigger rotating masses. In order to guarantee the highest possible degree of manufacturing precision, minimum tolerance and excellent long-term stability, the NF-P14 employs high precision CNC milled brass parts to reinforce the motor hub as well as a bearing shell made entirely from brass. Using a round frame with the same hole-spacing as common 120mm fans and producing more airflow due to its larger diameter, the NF-P14 is a perfect upgrade for 120mm CPU or case fans. Thanks to the supplied adaptors, the NF-P14 also fits common 140mm mounting holes. Providing 1200, 900 and 750 rpm speed settings via the supplied Low-Noise and Ultra-Low-Noise Adapters, the NF-P14 FLX (Flexibility) can be fine-tuned for superior airflow or maximum quietness. The latest version of Noctua advanced SCD drive system ensures superb running smoothness by eliminating torque variations and switching noises.

Product Information

Product Dimensions 5.5 x 1 x 5.5 inches
Item Weight 9.6 ounces
Shipping Weight 9.6 ounces (View shipping rates and policies)
ASIN B002XISTXM
Item model number NF-P14-FLX
Customer Reviews
4.7 out of 5 stars 64 customer reviews

4.7 out of 5 stars
Best Sellers Rank #794 in Electronics > Computers & Accessories > Computer Components > Fans & Cooling > Case Fans
Date first available at Amazon.com November 9, 2009

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Product Warranty: For warranty information about this product, please click here

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
First, the bad: At least with my particular Noctua, the 140mm fan does not like to run vertically. Even at full speed it struggles to start. I have adapted to this and just use it for horizontal applications, but the option to mount it vertical would be nice. Hence the one star removed.

Where Noctua's really shine is not just the low noise, but the amount of pressure they emit. Hold your hand an inch away from the noctua vs another fan running at similar speed/noise, and you can feel the "thickness" of the air coming from the Noctua. Yes there are other fans out there that advertise better air pressure and similar sound levels, but they are often even more expensive than the Noc.

Another place this product shines is the included voltage resistors for customizing the fan's speed. FYI, because mine did not say it anywhere on the box: BLUE= U.L.N, BLACK=L.N. In other words, blue is the quietest/slowest. I find that the Black regulator is the best compromise of speed and noise, being not much louder than the ULN, but much quieter than full speed. My guess is the BLUE is 5v, the BLACK is 7V and it runs at 12V without either.

But here's the real benefit: you can use the spare regulator on one of your other non-noctua fans. I used the spare BLUE regulator on a rather loud 140mm fan I had in my case.

The Noctua 140mm's normal holes actually line up with a 120mm fan spot. It comes with adaptors to mount it to a 140mm. Not many cases have 120mm spots that double as 140mm, but some do, in which case the Noctua works out well. Check your case (especially the rear vent) to see if it has an extra set of holes in a slightly larger pattern than the regular ones. I've always felt that 120mm for a rear fan is just a bit too small, since often it is a case's primary exaust.
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Verified Purchase
I needed a fan to cool my receiver due to the small cabinet that I needed to put it in. I bought this fan based on the positive reviews that it received. I had it running at full speed but I could just barely hear it if I was laying on the floor by the cabinet. I set it to the medium speed and I cannot hear it at all now and it keeps may receiver and other electronics very cool. I was going to buy a fan kit online to cool my electronics but I found that most of the fans were more than I wanted to pay or really cheap with a noisy fan. I bought a 12v power supply from my local second hand store, I had to dig through the bin of "cell phone chargers", but it was only $3. I cut the cord and spliced into the fans wiring harness, there are only two wires, and then I plugged it into the switched outlet on the back of my receiver. When I turn on the receiver the fan comes on. I cut a hole in the back of my cabinet right behind the receiver. I used the supplied screws to secure it in place and, well, it works great. This project took a little skill but not much, after all I did it. An even easier way to go would be to just lay the fan on top of the receiver.
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Verified Purchase
I purchased this fan to provide supplementary airflow through the case of my overclocked computer. Noctua is a bit more expensive than competing fans but, in my view, is well worth the additional few dollars.

The materials and build quality of the fan and mounting are excellent. This review refers to the 140mm diameter fan. Noctura also sells a 120mm fan that is virtually identical except for size.

There is nothing shabby about this product. It ships with both screws and soft rubber suspension mounts. I was a bit dubious about the rubber mounts, wondered if they would remain securely in place or pop loose from the fan case. I can report that once attached, they are not going to come loose accidentally yet can be removed and reused if desired.

The fan is extremely quiet, even at full speed. Noctua attributes this to the notches molded into the trailing edges of the blades. Whatever the reason, it doesn't make much noise at all. Speed control is not accomplished on this fan through pulse width modulation, even though most current motherboards provide PWM-controlled fan connectors. Instead, Noctua provides three short connector cables, two of which have in-line resistors to reduce the speed, giving the user a choice of low, medium, or high. At the low speed, the fan is utterly noiseless. At medium, you can hear it if you listen for it. Even on high, it is almost whisper quiet.

This fan is an example of why it pays to spend a little more for quality. Highly recommended.
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Verified Purchase
I removed all of the stock fans and have installed 2 140mm and 1 120mm Noctua fans in my CoolerMaster 690 II. What a world of difference it has made. I have the 2 140mm running @ 900rpm and they are basically inaudible from a few feet away. I have left the 120mm running at full speed because it is cooling the radiator for the liquid cpu cooler, that one is making an audible noise but even so it makes the stock CoolerMaster fans sound like vacuum cleaners - and CoolerMaster makes good fans!

Not only that they are quiet but they look and feel solid. Most case fans are flimsy and cheap feeling. They are worth the money if you are into this sort of thing.
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