Noctua nf s12b redux 1200 pwm review: Noctua NF-S12B redux — 1200PWM — Mitspielen — Vampire Live in München

Noctua NF-S12B redux — 1200PWM

As part of the Noctua’s portfolio, the Redux series is actually one of the largest ones and is meant to offer a lot and various models designed to deliver a very high quality and most of all a lot of cooling options. So far I’ve had the chance to test and review the biggest models part of the series with dimensions of 140mm – Noctua NF-P14r Redux 1500PWM and Noctua NF-P14s Redux 1500PWM and now it is time time to check what the fastest PWM powered and regulated version with dimensions of 120mm has to offer in matter of appearance, quality and performance.

Noctua NF-S12B redux – 1200PWM was delivered to me to perform a test and review in their latest, pretty simple and at the same time very stylish looking type of box. A package entirely made of robust carton delivering very firm fan protection and painted in the typical for the series grey / brown colour scheme.

Of course, on the front panel of the package there are the company logo, the size of the fan, the series name and the model name, while the full technical specifications explaining the product is located on a white sticker on the back of the box.

And before I continue describing the fan structure I want to mention that in this test and review I will describe and test only Noctua NF-S12B redux -1200PWM just because my equipment is not capable to test the other fans on the picture above, which are with dimensions of 80 and 92mm.

Now I believe it is time to pay some attention to the structure of the fan.

Noctua NF-S12B redux – 1200PWM STRUCTURE

As part of the redux series, Noctua NF-S12B redux – 1200PWM is based on the classic premium fan. The Noctua NF-S12B redux – 1200PWM is based on NF-S12B FLX which was released several years ago and which I had the chance to test and review. Actually, NF-S12B FLX was one of the first products tested and reviewed for this web page. The original model was a very good performer and I am really happy to see the fan was recreated with a new appearance and most probably delivering the same or even better performance. But of course, I will check this a bit later.

NF-S12B redux – 1200PWM front view	NF-S12B redux – 1200PWM back view

The fan itself is designed with a square, plastic frame, 120 x 120 x 25mm in size and entirely painted in light grey, which is very simple and is made to be installed on a 120mm case fan slot, CPU cooler or water cooling radiator compatible with a 120mm fans, where its square shape will ensure full coverage and best pressure performance.

The frame itself looks pretty nice but let’s check the pressure optimized propeller, which for this model is designed with 7 pretty narrow and very sharply angled blades, developed for high-impedance applications such as CPU coolers, water-cooling radiators or cases with tight fan grills, which will lead to very high and stable airflow performance at very low noise level. The blades themselves are designed with the Noctua’s Bevelled Blade Tips technology, which is meant to reduce the critical rotor/stator interactions and to extend the leading edges of the blades. This will result in increasing the blades surface area to deliver quieter operation and thus form a cornerstone of the fan’s efficiency.

Of course, the connection between the motor and the propeller for Noctua NF-S12B redux – 1200PWM is done by the typical for the company SSO-Bearing, which combines the proven concept of hydrodynamic bearings with an additional magnet to support the self-stabilization of the rotor axis. The SSO-Bearing technology is designed to provide very quiet operation and exceptionally stable long life span of up to 150 000 hours.

The fan is designed to be 4-pin PWM IC with SCD powered and regulated. The PWM IC with SCD control method integrates Smooth Commutation Drive (SCD) technology, by providing smoother torque impulses, SCD suppresses PWM switching noises and thus the product operates more quietly at lower speeds.

Enough about the fan, let’s check the additional accessories.

Noctua NF-S12B redux – 1200PWM

ADDITIONAL ACCESSORIES

Noctua NF-S12B redux – 1200PWM, like every other model part of the Redux series, is provided with a very simple accessories pack which features only one set of four installation screws to attach the fan to a case fan slot

Now let’s do some testing and check what the fan has to offer.

Noctua NF-S12B redux – 1200PWM TESTS

The tests will be conducted in my standard way. I will mount the fan and test it at 5V/7V/9V/12V and my goal will be to check the performance of the fan in real conditions. The product will be tested under close-to-perfect conditions, not taking into account any external factors. The results achieved during the test can in no way be the same if the fan is mounted on a cooler or on the case fan slot of any modern computer case. I will measure the amount of air going through the fan for one hour and its speed. For this I use a fan controller, a voltage meter, an anemometer and a stand made specifically for this purpose.

And this is what Noctua NF-S12B redux – 1200PWM looks like when operating on the test stand:

The test results are shown in the following charts:

Airflow through the fans at 5V, 7V, 9V, 12V

Propellers rpm during the tests at 5V, 7V, 9V, 12V.

The anemometer showed the following air speed passing through the propellers:

After mounting the fan onto the stand, and leaving it to run for about 30 minutes at maximum speed, it was time to perform the tests.

As with my other tests, again I started with a gradual increase of the voltage through the Lamptron FCT starting at 0V and Noctua NF-S12B redux – 1200PWM made at least one full revolution at about 7.5V. To do the first test I had to decrease the operating voltage to 5V.

Test at 5V:

At the first test conducted at 5V, NF-S12B redux – 1200PWM was working at stable 570 revolutions per minute, providing airflow level of 52. 32 cubic metres per hour. At this test the fan was completely silent.

Test at 7V:

At the second test performed at 7V, NF-S12B redux – 1200PWM delivered airflow level up to 75.36 cubic metres per hour while rotating with stable 780 revolutions per minute. At the second test the fan was still absolutely silent.

Test at 9V:

At the third test conducted at 9V, the fan was rotating at 990 revolutions per minute providing airflow level of 95.04 cubic metres per hour. At this test the fan was completely silent again.

Test at 12V:

At the last test conducted at 12V, the fan reached its maximum performance providing airflow level of 116.16 cubic metres per hour while rotating at 1230 revolutions per minute. At this test the fan started generating a very tiny noise coming out of the air passing through the propeller.

I believe it is time for conclusions:

Noctua NF-S12B redux – 1200PWM CONCLUSIONS

Noctua NF-S12B redux – 1200PWM Performance:

After I’ve spent some time checking the fan structure and after having some fun with testing the performance of the fan I can say that the new Noctua NF-S12B redux – 1200PWM version is a worthy successor of the classic NF-S12B FLX fan and is actually even better in matter of performance and appearance. The fan itself offers pretty simple structure combined with the typical Noctua technologies designed to deliver the best possible balance between airflow and static pressure levels, while working at very low noise level.

With this airflow and static pressure measured through the tests, the fan is definitely capable to deliver astonishing cooling performance, which will be able to keep every processor cool and stable, while being cooled by a CPU cooler or water radiator compatible with 120 mm fans.

Apart from being a good option for a main CPU cooler, the fan it is a very good choice to be installed as a case fan, too and set to PWM power and regulation method, which will definitely deliver a stable and quiet performance and will keep all of the modern and pretty hot hardware inside the case cool and quiet.

Noctua NF-S12B redux – 1200PWM Appearance:

Overall Noctua NF-S12B redux – 1200PWM offers very interesting design combined with a very simple and stylish colour scheme, which adds the feeling of rigid structure by making the fan look like it was made from metal. With this performance and appearance I believe this model is suitable to be used with every modern system in similar colour scheme or modding project featuring metal parts with shiny nickel coating.

I think Noctua NF-S12B redux – 1200PWM deserves the following reward:

Noctua NF-S12B redux – 1200PWM has been added to the 120mm fans catalogue.

Official price (MSRP): Noctua NF-S12B redux – 1200PWM – unknown

Warranty: 60 months

Special thanks to Noctua for providing us with a test sample.

7
Total Score

Performance

Noise Level

Additional accessories

Appearance

User Rating: 3.55 (33 votes)

Noctua NF-S12B Redux Review

<tbody> <tr> <td>Name</td> <td>Noctua NF-S12B Redux</td> </tr> <tr> <td>Size</td> <td>120x120x25mm</td> </tr> <tr> <td>Speed</td> <td>1200RPM</td> </tr> <tr> <td>Airflow</td> <td>58CFM</td> </tr> <tr> <td>Static Pressure</td> <td>1.31mm/h30</td> </tr> <tr> <td>Connection</td> <td>PWM</td> </tr> <tr> <td>Bearing</td> <td>SSO</td> </tr> </tbody> </table> <h3>Installation</h3> As 99.9% of fans out there, the Noctua NF-S12B Redux needs to be installed using the 4 included screws. Put it into position, screw it down, done. Unlike most Noctua Fans, however, the PWM connection will not be provided using a 1cm extension on the Fan end and a 30cm extension. On the NF-S12B, there is a 40cm long PWM cable directly connected to the fan, a method that we surely prefer.<img loading='lazy' src='/800/600/http/static.onlinetrade.ru/img/fullreviews/87504/4_small.jpg' /> <h3>Appearance</h3> Compared to any other Noctua Fan, the Redux lines clearly follow a completely different design guideline. The Frame of the Fan is painted in a lighter grey color while the Fan Wing part comes in a darker tone. But that’s not all. Due to the cost measuring methods, Noctua had to apply to keep the price low, they obtained from adjusting the littlest aspects of the fan which would potentially increase performance. Stepped Inlet Design, Inner Surface Structures just to name a few. These little do heavily impact how the fan ended up looking. Instead of the usual Noctua Product where you see tons of little mini gimmicks like indentations and weird-shaped pieces of plastic, the best word to describe the S12B is: Simple. A simple fan, in Grey, doing what a fan should be doing. <h3>Benchmark</h3> We tested the Noctua NF-S12B in our usual testbench. While letting the Fans spin at 100% of their max 1200RPM speed, they managed to keep the 3700x at 56°C.<img loading='lazy' src='/800/600/http/cosmeteria.ru/wp-content/uploads/e/1/9/e190f852facc3bee3881b8f510ccb19a.jpeg' /> Surprising as this is, Noctua’s «Budget» lineup of cases managed to outperform the regular NF-S12A’s at their max speed. We do attribute this to the -generally- higher stats. As unlogical as all of this sounds. On a Noise-to-Performance front, the NF-S12B’s slightly started to lose track with their non-budget-oriented counterparts. while they managed to keep up at higher speeds, the little adjustments that were not done to keep the price low started to win over, allowing the S12A’s to gain traction and outperform the S12B’s in the end. That being said we do want to point out how ridiculously silent both of these fan sets are. <h3>Conclusion</h3> Unline our expectations, we do absolutely not believe Noctua’s Redux NF-S12B’s to be the inferior fans compared to regular NF-S12A’s. Although the more expensive alternative wins the battle of noise-to-performance, it was surprising to witness that a «budget version» outperformed the pricer alternative at full blast.<img loading='lazy' src='/800/600/http/i.ytimg.com/vi/60IFAMw4_Qc/hqdefault.jpg' /> That being said, it is undoubtedly true that the little adjustments that Noctua generally makes to make their regular lineup stand out and outperform the competition is a great thing. Having these things missing in their budget line is definitely noticeable, however, so is the price. At around a 5€ cheaper price tag, we can quickly math-out that for the price of 3x regular S12’s we can get 4x S12B’s. And considering the minimalistic differences in noise-to-performance, we do believe this to be a perfectly acceptable tradeoff. Therefore, in our opinion, if you are looking for a great Case fan that doesn’t break the bank, we can definitely recommend Noctua’s NF-S12B. <h2> brief review of NOCTUA NF-S12B Redux-1200 </h2> Detailed information 9.9/10 Rating <tbody> <tr> <th colspan="2"> General characteristics </tr> <tr> <th> DOTLATOR </td> </tr> </tr> </tr> </tr> </tr> </tr> </tr> </tr> </tr> </tr> </tr> </tr> </tr> </tr> </tr> </tr> </tr> </tr> 9001 mm </td> </tr> <tr> <th> Fan thickness </th> <td> 25 mm </td> </tr> <tr> <th> Speed </th> <td> 1200 rpm </td> </tr> <tr> <th> Air flow </table> Rating 5 Advantages: Really cool fan.<img loading='lazy' src='/800/600/http/i1.ytimg.com/vi/IOgPUy5tD7w/0.jpg' /> Completely silent and does not vibrate. Disadvantages: Very expensive Comment: I set it to blow in, as it is a little confused on a quiet system unit. To blow well and not buzz (vibrate, buzz), there are almost no other options. Sertin May 1, 2021, Kyiv \ Usage experience: less than 9 months0003 Rating 5 Advantages: Reasonable noise level, strong plastic. Disadvantages: There are no long bolts in the kit, auto speed control changes speed dramatically Comment: Not a bad fan, but obviously overpriced Anton Fedonyuk March 17, 2021 Moscow and Moscow region \ Usage experience: less than 9 months0003 Rating 5 Advantages: Good fan Dmitry Ch.<img loading='lazy' src='/800/600/http/w2g.ru/wp-content/uploads/2020/06/633153.jpg' /> March 10, 2021 \ User experience: several months Rating 5 Advantages: No backlight. Workmanship. Very long service life and 6 year warranty. Powerful airflow. Quiet at low speeds, when the latter are controlled by reobass: you can even hear hard drives and the fluttering of the processor fan. Cons: Price. The rumble of air at maximum speed is quite significant — it is treated either with a pressure-reducing insert-resistance, or with a system speed control regulator (reobas). Noctua NF-S12B redux-900 was out of stock, so I considered 3 options: 1.<img loading='lazy' src='/800/600/http/perm.elmall59.ru/pics/pics2/138143_0.jpg' /> Noctua NF-S12B redux-1200 is blown by design: the air flow is dispersed to the sides. 2. Noctua NF-P12 redux-900 — blower with a narrowly directed flow, designed to blow through radiators, but it can also be used as a blower. 3. Noctua NF-S12B redux-700 — blown, diffused flow. I wanted to take the third or second option, but settled on the first, because there is a reobas. I installed the Noctua NF-S12B redux-1200 case fans on special rubber anti-vibration screws, and attached a 140x140x27 Arctic P14 fan at 1700 rpm to the video card heatsink with plastic ties — so, just in case a fireman, if it suddenly gets warm under load. What happened in the end? Comment: The whole charm of this design lies in the reobas 5.25 GELID Solutions SpeedTouch 6, which has huge adjustment possibilities, including the complete shutdown of a single fan or all at once, not counting the processor, powered separately.<img loading='lazy' src='/800/600/http/driverunpaid.ru/wp-content/uploads/18-92.jpg' /> The device is connected to 2 case coolers and an Arctic fan from the Palit GeForce® GTX 1650 KalmX video card with passive cooling and a large heatsink. Now two case Noctua NF-S12B redux-1200 are constantly plowed with a minimum voltage at 840 rpm each, giving a total of 1700 revolutions and an air flow of about 120-130 cubic meters per hour — this is 2 cubic meters per minute. I don’t even turn on the video card cooler. When the temperature in the room is 26.1 degrees Celsius, the situation in the system unit is as follows: 28 degrees in the area of the power supply. 29 degrees on the warmest tube of the video card radiator. 8-10 centimeters from the motherboard is already 27 degrees. The temperature of the vidyuhi chipset is 32 degrees. If you turn on the cooler on the vidyuhi at the minimum possible 1050 rpm, then the temperature on the graphics chipset drops to 29 degrees at rest. Subjective findings: 1. Noctua NF-S12B redux-1200.<img loading='lazy' src='/800/600/http/ae04.alicdn.com/kf/S1a29d682f64f4a35958cde9546cec00dm/NF-P14S-14.jpg' /> Noisy in a single case at maximum speed, but tolerable if a high and noble mission is set — to cool the insides, no matter what. In the amount of two pieces — only with reobas. 2. Noctua NF-P12 redux-900. In a single copy, I think it will be good and quiet. I already wrote about two Nokutas at 840 rpm — the flight is normal, but if you add reobas — the silence can be adjusted even better. 3. Noctua NF-S12B redux-700. Quietest. I think if you need to install two exhaust fans without a reobas in the case and you need silence, this is what you need. Yes, and one more thing… at 12 volts, the Noctua NF-S12B redux-1200 produces from 1240 to 1350 rpm. One at the maximum is still tolerable, but two or more — thank you! Someone from the buzzing of this apiary may get stuck, but I will soon hit fifty kopecks — the stormy youth is behind me, and more and more I want peace … Vladimir Artamonov January 18, 2021, Moscow and Moscow region \ Usage experience: less than 9 months0003 Rating 5 Advantages: The cooler itself is based on a new type of bearing — it practically hangs in the air and there are no rubbing parts, which makes it not only silent, but practically eternal.<img loading='lazy' src='/800/600/http/i.ytimg.com/vi/pfowwAG8YmY/hqdefault.jpg' /> the technology itself is not new, but its application in such designs is simply priceless. I think the warranty period of 5 years will pass without problems and, most importantly, without noise. Disadvantages: Of course, the price. Comment: The set is simply excellent — one box costs half the price. In the box, the cooler itself, the resistance in the form of an extension cord between the plugs. a company logo such as a badge or a badge, you can fasten it on the case — a trifle, but nice. Denis L. November 3, 2020, Moscow and Moscow Region Estimated 3 Cons: The most expensive and noisiest of all my fans. Andrey Pakhomov September 20, 2020, Central Federal District \ User experience: several months Rating 5 Advantages: Quality Noctua Silent Efficient Disadvantages: Gray color, does not match anything at all Comment: Only suitable for blowing, it will not be able to blow through the radiator due to the shape of the blades.<img loading='lazy' src='/800/600/http/vsevdom.net/image/cache/catalog/products_images/tp2/1020558-800x800.jpg' /> Runs quietly even at high speeds, only air makes noise. First I put the Arctic, out of 5 turntables, 2 began to make noise within six months. These have been standing for 2 years and are just as quiet. Ilocative July 28, 2020, Vologda \ Usage experience: less than 9 months0003 Rating 5 Advantages: The design is cool, yes-yes, like a dignity 😀 The flow creates a good, cheapest 120-nick from Noctua. Disadvantages: Noisy even at 1200 rpm. Moreover, it is not the air flow that makes noise, but the fan itself, a very small rumble. Comment: Suitable as a case fan, it blows decently at 700 rpm, but you can’t hear it at all.<img loading='lazy' src='/800/600/http/glob3trotters.com/wp-content/uploads/2017/04/Redux_0-1024x576.jpg' /> But it is not suitable for cooling radiators, because the air flows out of the fan not strictly straight, but at an angle. Timur V. November 18, 2018 \ Experience: several months Rating 4 Advantages: Strong pressure. Good for overclocked systems. Quality materials. Long life bearing. Disadvantages: Not suitable for quiet systems. Comment: The purpose of this series is to blow the processor heatsink with frequent fins. Unlike redux-700, I would not recommend installing it as a cabinet one, because it is too noisy, it works more on pressure than on flow … Vlad M. December 7, 2016, Moscow and Moscow region \ Usage experience: less than 9 months0003 <h3> Video </h3> <iframe src="https://www.<img loading='lazy' src='/800/600/http/justsurvivalcraft.ru/wp-content/uploads/all_fans.jpg' /> youtube.com/embed/oJSD2pqgdyA?rel=0″ frameborder=»0″ allowfullscreen=»»/>

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Noctua NF-S12B redux-1200 selected in the rating:

Review and testing of the Noctua NF-S12B FLX fan GECID.com. Page 1

::>Cooling systems
>2009
> Noctua NF-S12B FLX

14-07-2009

Page 1
Page 2
One page

For several years, the cooling systems of the Austrian company Noctua have proven to be reliable, very quiet and at the same time quite productive solutions. If we consider Noctua fans, then by and large they contain all the best and high-tech — from a special shape of the impeller to a motor with a bearing. Moreover, many structural elements are the company’s own developments, which work closely with the Austrian Institute for Heat Transfer and Fan Technology. All applied improvements and developments are designed to increase reliability, increase efficiency and reduce noise levels.

The new Noctua NF-S12B series of 120 mm fans, consisting of two models, is in some way an update of the already familiar Noctua NF-S12. Thus, at the moment, Noctua, as before, produces only three 120 mm fan models. The two Noctua NF-S12B models have the same type of impeller and bearing, but differ in different rotation speeds. Noctua NF-S12B FLX is a productive Flexibility model (flexible), the rotation speed of which can be changed in steps using two adapters. The Noctua S12B ULN is an ultra-quiet but less efficient version of the Ultra-Low-Noise with a top speed of 700rpm and an impressively low noise level of just 6.8dB. Today we had the opportunity to test the Noctua NF-S12B FLX fan as the main model of this series.

Noctua NF-S12B FLX fan specification is as follows:

	Noctua NF-S12B FLX
Size, mm	120 x 120 x 25
Rotation speed, rpm	1200±10%
Rotation speed with L. N.A., rpm	900±10%
Speed with U.L.N.A., rpm	600±10%
Airflow m ³ /h	100.6 (59.21 CFM)
Airflow with L.N.A. m ³ /h	75.8 (44.61 CFM)
Airflow with U.L.N.A. m ³ /h	49.2 (29 CFM)
Noise level, dB	18.1
Noise level with L.N.A., dB	10.6
Noise level with U.L.N.A., dB	6.2*
Static pressure, mm w.c. Art.	1. 31
Static pressure with L.N.A., mm w.c. Art.	0.76
Static pressure with U.L.N.A., mm w.c. Art.	0.34
Power, W	1.2
Current, A	0.1
Supply voltage, V	12
Bearing type	SSO hydrodynamic
Connector	3-pin
Life, h	>150,000
Warranty	6 years
Optional	4 anti-vibration holders slow down adapter L. N.A. U.L.N.A. 3:4 pin adapter 4 screws
Manufacturer website	http://www.noctua.at/

* — extrapolated value

First, let’s dwell on the features and changes that Noctua made when developing the new Noctua NF-S12B series, and also consider a comparison of the characteristics of Noctua fans, according to the data presented in the presentation.

The main improvement of the new Noctua NF-S12B series is the creation of a new shape of the impeller blades. Notches appeared at the ends of the blades, due to which the impeller was called oblique (Bevelled). The developers emphasize the reduction of the gap between the impeller and the fan housing, which increases the airflow of the fan and the static pressure generated by it. In the area between the housing and the impeller, due to air friction, the largest proportion of fan noise is generated. In the Noctua NF-S12 model, this problem was solved by reducing the length of the blades. It turned out that this is not the most effective, although effective, method that really allows you to reduce the noise level, but at the same time, airflow and static pressure are reduced.

The serrations on the edge of the impeller should soften the passage of air in the critical area between the housing and the impeller, and in addition to increase the airflow to noise ratio and the static pressure to noise ratio by 10%.

Compared to the previous model Noctua NF-S12, the main achievement of the Noctua NF-S12B FLX fan is 18% more airflow and 14% more static pressure, and this at 100 rpm less rotational speed.

The comparison between different Noctua fans doesn’t end there. In addition, the manufacturer shows for what tasks and what features the new Noctua NF-S12B FLX fan has, when compared with the Noctua NF-P12. Who is the best?

One of them cannot be called the best, since they were originally designed for different tasks. The Noctua NF-S12B FLX fan is quieter and capable of creating more airflow at equal speeds, but the Noctua NF-P12 pumps more air pressure, which is important when used in power supplies or processor cooling systems with a dense fin package.

The Noctua NF-S12B FLX fan, like all other Noctua models, uses a magnetically suspended SSO bearing. This type of bearing is characterized by low noise and very long service life (up to 150,000 hours). For this reason, the manufacturer gives a 6-year warranty on its fans.

The new Noctua NF-S12B FLX fan features the second generation of Smooth Commutation Drive (SCD2). Recall that due to the smooth switching of the poles, it is possible to eliminate the switching “jerks” of the motor, which also contributes to an increase in the durability of the fan. In the next generation of SCD2 motors, small engine noises that were heard in close proximity to the fan were eliminated.

Now let’s move on to the consideration of the product itself — Noctua NF-S12B FLX.

The packaging of the Noctua fan exudes a strict and somewhat classic design.

The packaging of the Noctua NF-S12B FLX fan can be said to be traditionally very informative – on the reverse side there is a brief description of the fan in seven languages. Particular attention is paid to the design features of the fan, which we have already mentioned above.

Brief description of the Noctua NF-S12B FLX fan contains all the main advantages.

On the side there are two remaining models of 120 mm fans Noctua NF-S12B ULN and Noctua NF-P12. And each of them is briefly described.

On the reverse side of the fan package there is a spread with presentation information, which is fixed with a small Velcro. Thus, the user can get enough information about this device very easily.

Inside the package, the Noctua NF-S12B FLX fan is neatly packed in a transparent plastic box, along with the rest of the package.

The complete set of the Noctua NF-S12B FLX fan consists of:

4 anti-vibration holders;
L.N.A and U.L.N.A. speed reduction adapters;
3:4 pin adapter;
4 screws.

To make L.N.A. and U.L.N.A. could be easily distinguished, their connectors were given a specific color: black — L.N.A., blue — U.L.N.A.. Speed-down adapters add additional resistance to the power circuit, thus reducing the voltage on the fan.

Adapter L.N.A. (Low-Noise Adapter) reduces the fan speed from 1200 rpm to 900 rpm. At the same time, the air flow is reduced from 59 CFM to 44 CFM and the noise produced is reduced from 18.1 dB to 10.6 dB.

Adapter U.L.N.A. (Ultra-Low-Noise Adapter) allows you to reduce the speed by another 300 rpm, to 600 rpm, and also reduces airflow to 29 CFM and noise to 6.2 dB.

The Noctua NF-S12B FLX fan has a signature Noctua color scheme, combining a light beige body and a dark brown impeller. The fan is powered by a 3-pin connector that does not support PWM power supply, which is considered to be more economical in terms of automatic control.

The length of the fan wires can be said to be standard and equal to 40 cm, and the wires are hidden in a protective sheath.

The Noctua NF-S12B FLX impeller consists of seven blades with a large angle of attack but a small area. This impeller design is optimized for good airflow in low drag conditions. Thus, and in the specification you can find confirmation of this, the static pressure of the Noctua NF-S12B FLX fan is only 1.31 mm of water column, while the air flow is as much as 59.21 CFM, which is an excellent indicator for a rotation speed of 1200 rpm.

As you can see in the photo, the gap between the edge of the blades and the body on the Noctua NF-S12B FLX, although it has become smaller than that of the predecessor Noctua NF-S12, is still quite large.

One of the less obvious, but still the advantages of Noctua fans is low power consumption.

On 17 апреля, 2023 By alexxlab

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