Thermalright TL-B14 in a wide comparison of 140 mm fans

The fan carrying one of the most popular brands in the field has been tested against the latest competitors. Among them are the new Arctic P14 Pro (A-RGB), Noctua NF-A14x25 G2 PWM and Thermaltake Toughfan 14 Pro. And many others (including the FD Momentum 14/RGB) with which the TL-B14 will cross paths. In any case, the geometry of the Thermalright impeller is efficient, the price is low, and the results are impressive.

Mounting and vibration measurement

Naturally, each tested fan must first be properly mounted. With all that we want to measure, and with the kind of precision that is required for relevant measurements, even the smallest details matter. The whole mounting system is quite complex and we are happy to have fine-tuned it to maximum satisfaction. Even if it meant hundreds of hours of tinkering. What’s so complicated about it? There’s more.

The fans are installed to the multi-purpose bracket. The substrate is a 2 mm thick metal plate to which the fan is attached, or the fan is attached together with an obstacle (e.g. a filter, hexagonal grille or liquid cooler radiator).

Bracket for installing the fan and vibrometer sensor

For correct and always equal pressure, the fans are always tightened with the same force with a torque screwdriver. If this were not the case, joints and clearances in the assembly could arise, in short, uneven conditions with undesirable distortion. For example, also for vibration measurement. On top of the fan mount there is also a bracket for the three-axis vibrometer sensor. The latter is magnetically attached via a steel insert, on which the sensor exerts a force of one kilogram and, thanks to the stop, is also always in the same place and in the same contact with the rest of the structure. These are the basics in terms of repeatability of measurements.

In order to capture the intensity at the highest possible resolution, the tray of the holder cannot be too heavy and at the same time it must be strong enough not to twist. This would again cause various distortions. Therefore, we used a hard (H19) aluminium (AL99.5) plate for the construction of the holder, whose weight is just enough so that free movement is not significantly restricted.

To achieve the finest possible resolution for vibration measurement, soft rubber inserts are provided in the mounting holes through which the bracket is installed to the tunnel. And just behind these inserts are silent blocks with a very low hardness of 30 Shore. These are also used so that the vibrations of the fans don’t spread to the tunnel skeleton. If this were to happen, then for fans with more intense vibrations, this secondary noise component, which is not related to the aerodynamic sound of the fan, would also be reflected in the noise measurement results.

Sensitive mounting mechanism allows high-resolution vibration measurement while preventing vibrations from traversing to the wind tunnel skeleton

This is where it is good to have ideal conditions, even though they are unattainable in practice, because fan vibrations will always be transmitted to the case skeleton to some degree. But each cabinet will react differently to them, or rather the final noise level will depend on a number of factors, starting with the materials used. Therefore, it is a good idea to filter out this extra noise component in tests and in practice take into account the measured vibration intensities. The higher these vibrations are, the higher the noise addition has to be taken into account.

The silent blocks are naturally formatted to offset the bracket a bit from the rest of the tunnel, otherwise they wouldn’t make sense. This creates a gap that is sealed across the entire surface with a soft foam seal with closed cell structure (i.e., it’s airtight).

To prevent vibrations from passing through to the wind tunnel structure, there is a small gap between the fan bracket and the leading edge of the tunnel, which is sealed by a soft foam collar

To properly center the fan impeller in relation to the other elements, the bracket includes a protruding frame that follows the inner contour of the seal. And to make matters even more complicated, the frame with the tested fan is pressed against this seal by a small force of compression springs, which in turn is set with the highest possible resolution for vibration measurement in mind and at the same time so that sufficient pressure is generated to maintain a flawless seal.

Vibration is measured with a Landtek VM-6380 vibration meter. It records the vibration speed (in mm) per second in all axes (X, Y, Z). For quick orientation, we calculate a 3D vector from the measured values and graph the “total” vibration intensity. But you can also find your results if you are only interested in a specific axis.

The most complicated part of the tunnel is behind us, and we’ll move on in the next chapter. But we will still stay at the beginning of the tunnel, we will just turn to the peripheries on the sides.


Contents

Noctua NF-A12x25 G2 PWM fans now also available in black

For users who do not like the original brown-and-beige color scheme, Noctua is releasing NF-A12x25 G2 fans in the chromax.black variant. This combines more visually attractive styling with the exceptional aerodynamic properties associated with top-tier positions in charts measuring relative airflow per unit of noise. Yes, the foundation remains the highest possible cooling performance at the lowest possible noise level. Read more “Noctua NF-A12x25 G2 PWM fans now also available in black” »

Contents

Analysis: Which PC fans vibrate the least?

So which ones? Vibrations of more than a hundred PC fans collected in one place, in both 120 mm and 140 mm formats—the ones most widely used among PC builders. Some models vibrate more, others less, or not at all. The scenarios vary, as is natural. The task is to make sense of it all based on exact measurements. These are compiled into clear graphs. Yes, you’ve seen them before. Read more “Analysis: Which PC fans vibrate the least?” »

Contents

Endorfy Corona 120: Only the (ARGB) ring visible in the dark

From the models still sold under the SilentiumPC brand, the Corona fans have come a long way. They are still more “showy” than “efficient,” although even in their primary function they don’t fall behind as much as you might expect (even if airflow per unit of noise is lower…). Their loyalty to the ring‑style light guide remains. Together with ARGB LEDs, it frames the fan’s impeller—and it really does look good. What do you think? Read more “Endorfy Corona 120: Only the (ARGB) ring visible in the dark” »

Contents

Comments (19) Add comment

  1. I have this installed as a back exhaust fan on my Fractal Design Define S. In the front I have three of the Fractal Design’s older dynamic GP14.
    This fan has a specific prrrrrrrrrr noise that becomes pronounced above 1100rpm.
    I somehow prefer it over the extremely annoying high pitched whine of the Arctic P14 PWM.
    My quest for a satisfactory quiet fan over 1000rpm continues.

    1. Are you sure that the noise is not actually being generated by the grille on which the fan is mounted? Maybe it is resonating with the TL-B14 fan and is the source of the unwanted noise. With other fans this doesn’t necessarily have to happen, of course…

  2. Please review the Thermalright TL-C12015B. Maybe the best slim fan after the P12 slim, and important as the range for slim fans is limited.

    1. Yes, the TL-C12015B looks good. Thanks for the tip! We are adding it to the list and will ask Thermalright for samples when we get the opportunity. No promises, but let’s hope we’ll get to see its tests on here. 🙂

    2. 1. For some reason, the positive/negative list in the evaluation section seems empty. Can you check if that’s also the case on your end?

      2. On the topic of Thermalright, have there ever been considerations of reviewing some of TR’s CPU air coolers?
      I’d love to see some of the detailed analysis you guys do for the likes of the Phantom Spirit 120 Evo, Royal Pretor 130 Ultra or the Peerless Assassin 140, just as examples for their 3 most performant recent models.

      1. Sorry, no idea why this was posted a reply to you (Yamato). It was supposed to be a question to Ľubomír.

      2. Thank you for the heads-up. 🙂

        1.) The +/- table really was empty, but everything’s fixed now.
        2.) We’re definitely interested in Thermalright coolers, and we already have a sample of the Royal Pretor 130 in the test lab. Their lower representation in our tests is only due to weaker local distribution, but that doesn’t change the fact that we want to cover Thermalright coolers too. The English edition of HWCooling does have global reach.

  3. Is the TL H12-X28 anywhere in the schedule? Looks like a pretty good 120mm ARGB workhorse if the specs are anywhere near accurate

    1. We don’t currently have the TL-H12-X28 fan in our testing plans. I agree its design is extremely attractive, but I’m constrained by limited time. While I believe we’ll eventually get around to testing this fan, I really can’t make any promises right now.

  4. I’m sorry if it has been asked before or if it’s already on the schedule, but could you guys review the Sudokoo Mach140 fan, the Sudokoo Proteus 360 AIO and the Thermalright Stream Vision AIO?

      1. Either will be great. Comparing the 120 with the Phanteks T30 or the 140 with the Arctic 14 Pro will show whether Sudokoo’s product is competitive.

        1. I’m looking forward to it. The aerodynamic design of these fans looks really promising, and based on previous experience, I’d expect the Mach120 to deliver some very attractive results. 🙂

    1. As for Sudokoo fans, we have Mach120 samples in the test lab. Tests of these fans will definitely come out sooner or later. Regarding the Mach140—can’t say yet, we’re not that far ahead, haha. The Proteus and Stream Vision coolers are very good suggestions for future tests as well, but I can’t promise anything for now. We’ll see. 🙂

      1. No problem! I know it’s not possible to review every piece of available gear.
        Anyway, thank you for everything you have been doing!

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