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Within all testing of all the fans, there was only ever 1°C difference between them. So, the fan is no better or worse at the specific tasks than any other fans we tested.
Arctic P12 PWM PST ( ACFAN00134A ) Review | Tech For Techs Arctic P12 PWM PST ( ACFAN00134A ) Review | Tech For Techs
As we used the P12 PWM in their "PST" Version, we were able to make use of their "Power Sharing Technology". This PST Plug basically adds an additional 3-Pin Output to the cable of Each Fan.And one addendum for the discerning reader who will scroll through the comments here and there and might ask the same question as one of the readers of this article in another language. Namely, why the BioniX P120, being more expensive, often achieves a lower airflow than the P12. We discussed a bit in the opening chapter that these fans don’t have the same rotors, but I didn’t want to pay any extra attention to that in the conclusion (these aren’t fans that are in any way competing or that you’ll be deciding between). While we attached the first Fan to the PWM header on the Mainboard, the short PST extension forced us to also rout the Cable of every other fan to the front of the case. well, it did once the noise became high enough to make all the finetuing Noctua does irrelevant, at 31dB(A) and below there’s no competition, and I hope we’ll see these lower noise targets soon”
Arctic P12 PWM PST Review | The Best Budget 120mm Case Fan? Arctic P12 PWM PST Review | The Best Budget 120mm Case Fan?
The P12 PWM PST fan (hereafter referred to as the P12, but we’re still talking about the PWM PST variant) has a 5-blade axial rotor, which is typical of Arctic’s current “P” series models. Because of the small number of blades and the intention to achieve high static pressure, each blade must be large. If the blades were smaller, a lot of air would escape through them, which would reduce the airflow the more resistance the fan would have to overcome. Thus there is a considerable cross-sectional area covered by the blades, so that the airflow does not decrease excessively even if the fan is operating on restrictive obstacles. During the development of the P12 PWM PST, special emphasis was placed on a focused airstream and thus a high static pressure. The fan guarantees extremely efficient cooling, even with increased air resistance. Therefore, the P12 PWM PST is particularly suitable for use on heatsinks and radiators. A 10 °C lower motor temperature roughly doubles the life span of a fan. The new ARCTIC motor has a four times longer service life through its low coil temperature. Consequently, we have extended the warranty to 10 years. P12 / F12 PWM PST CO => Has a PWM Connection + Daisy Chain Connection + Build for Constant Operation Additionally, they did manage to keep the noise level pretty low, and even be "un-noticeable" in the lower 50%s of their PWM Speed.Unfortunately, I cannot agree with this statement even now. The extra details that Noctua has often stand out more with relatively higher speeds. Whether it’s Flow Acceleration Channels, Stepped Inlet Design, a significant narrowing of the gap between the blade tips and the frame or Inner Surface Microstructures. These elements counteract the shortcomings that become stronger with increasing pressure. The fact that the NF-A12x25 gives excellent results at low speeds is largely due to the fact that the operation of the motor and blades does not create any noise, so at this level there are no such pronounced limitations as with other fans, and the NF-A12x25 fits into the same noise level at higher speeds.
Arctic P12 PWM PST Review - STS Tutorial Arctic P12 PWM PST Review - STS Tutorial
So I must admit that I missed that there are also different revisions of the P12 PWM PST. In this case, ours, tested, will be the rev. 1. – 0.08 A and without the revision specified next to the EAN code. That’s how Artcic usually does it when it’s the first revision…For being only a 6-euro fan, the precision of production is extremely high. It’s only at the level of really fine detail that you’ll find that the P12 has slightly looser manufacturing tolerances than Arctic fans with a similar rotor. There will be a tiny unevenness here and there on the P12, but it will have virtually no impact on the performance. And at this price range, it’s also a bit unfair to point it out, as similarly priced fans often fare considerably worse. Even though we were perplexed that they did not manage to repeat their results, they performed excellently with 83°C on the CPU. The cable is “ordinary” but solid – flat, with the wires holding together nicely. There are two connectors at the end. One to connect the fan to the motherboard or hub/controllers, and the other to daisy-chain another fan. The cable is 40–45 cm in length. By doing so, we can use the CPU Temperature as an accurate measurement as the CPU temp now only relies on the Air that the Case Fans are pushing into the Case. The P12 Series is pressure optimized, meaning that the Air that the P12 Fan is pushing has a higher pressure, resulting in a better passthrough if the direction it blows is restricted, like by a Radiator or Filter.
ARCTIC P12 PWM PST (5 Pack) - 120 mm Case Fan, PWM Sharing ARCTIC P12 PWM PST (5 Pack) - 120 mm Case Fan, PWM Sharing
We would have hoped that the wire would be long enough to keep the rest of the Fan wires behind the mainboard. But I understand the increase in motor power. I would say the original P12 is quite significantly underpowered, with small headroom. After letting Heavyload grill the CPU, we came to the following results while the Fans were spinning at 100% PWM.The signal quality of the motherboard/hub should not make a difference in noise, it is determined by the NE-FD1 IC inside the fan. Noctua often has complaints about the PWM signal quality of third party devices and states that it can be misinterpreted at lower speeds. But this is not the case with Noctua fans and it should not affect the noise level anyway, as long as the fan is running stable at the given speed. The misinterpretation of PWM that Noctua mentions is that the fan operation may not correspond to the set PWM duty cycle ( we have discussed this in more detail in this article, where we also discuss the key features of the new Noctua NA-FH1 hub). While we installed the P12's we did notice a small thing that could have been better thought through. Even though the PST (Daisy-Chain) system was very useful while mounting them, the attached extra wire was way too short. After Unboxing the Fans, we immediately noticed that there were no "Anti-Vibration" Pads to be found. Because the P12's are aimed at the Performance-only market, we will also cease to let their design affect our Review. One of the differences from the BioniX P120 A-RGB that is also good to notice when judging the results is the smaller offset of the rotor from the frame. The P12 has a half centimeter narrower tunnel, so the rotor is closer to the obstacle, which changes the airflow velocity in addition to the noise. So there is actually a similar effect that the Noctua NA-IS1 frame is supposed to provide.
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