Fractal Design Venturi HP-14 PWM: Against vibrations above all

Results: Static pressure through a hexagonal grille

Venturi fans have some of the softest mounting corners. The transmission of vibrations from moving parts further away to anything (case plates, heatsink fins, …) is thus very significantly damped. Compared to other (even more modern Fractal Design models), these fans have more robust blades, which are both thicker and wider, and as a result, higher static pressure is also achieved at comparable speeds.

Results: Static pressure through a hexagonal grille

Note: “Higher is better” (the result of static pressure in the charts) is only valid for comparing fans of the same formats. We have discussed what the quantity “static pressure” means and how to understand it in this article.








Why is there a missing value sometimes? There may be more reasons. Usually it is because the fan could not be adjusted to the target noise level. Some have a higher minimum speed (or the speed is low, but the motor is too noisy) or it is a slower fan that will not reach the higher decibels. But the results in the graphs are also missing if the impeller is brushing against the nylon filter mesh. In that case, we evaluate this combination as incompatible. And zero in the graphs is naturally also in situations where we measure 0.00. This is a common occurrence at extremely low speeds with obstructions or within vibration measurements.


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Take a guess: How do Noctua NF-A14x25 G2 PWM fans vibrate?

Although very low, we did observe some vibration even with the Noctua NF-A14x25 G2 PWM fans. However, one question still remains unanswered, namely, how much range can there be in the observed vibrations across samples. We will focus on this in the coming weeks, and you can make your own guesses about the range of vibrations. The most accurate of you will then win… yes, the Noctua NF-A14x25 G2 PWM. Read more “Take a guess: How do Noctua NF-A14x25 G2 PWM fans vibrate?” »

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DeepCool FT14: More revealing (than others) and more capable

It took years, but finally DeepCool managed to modernize its fans in the 140mm format as well. The DeepCool FT14s present themselves with very attractive specs – both the airflow and static pressure are above standard, but the key is how these fans will fare in practice compared to competing models. What makes the FT14 visually different from those at first glance is that you can see inside the motor. Read more “DeepCool FT14: More revealing (than others) and more capable” »

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Noctua NF-A14x25 G2 PWM: Finally a first-class 140mm fan

The range of 140mm fans is now expanded by the Noctua NF-A14x25 G2 PWM. The wait for this model was very long, but finally, after various hardships, everything was brought to a successful end. This, by the way, is also indicated by our in-depth tests, from which the NF-A14x25 G2 fan takes away the “best” results across many usage scenarios. This is also due to the significant innovations in the aerodynamic design. Read more “Noctua NF-A14x25 G2 PWM: Finally a first-class 140mm fan” »

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Comments (2) Add comment

  1. I wonder the reason why these type of corners, despite being so effective, are uncommon. Is it a lack of necessity due to inherent low vibrations, rubber pads/mounts being good enough/better, or some kind of cost or mechanical concerns?

    1. It’s hard to say anything for sure. But I will dare to speculate.

      Let’s assume that higher vibrations characterize mainly the cheaper fans, where the goal was to make them as cheap as possible. All-rubber corners don’t fit into this scheme (lowest cost) (such Arctic P12 don’t even have rubber pads), so they are usually not used. And again, when there is a bigger budget for fans, the funds can be put into things that suppress vibrations more effectively than perfect anti-vibration corners. Whether it’s a stiffer material (just with a larger thickness or a different composition, for example LCP instead of PBT) or a less vibrating motor etc.

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