At the lower performance end remain the Alseye Xtreme X12, which not only provide the lowest performance, but are also many times louder than the next two fans at the lower performance end. The be quiet! Shadow Wings 2 and the Fractal Design Aspect 12 do not offer high peak performance, but they remain quiet enough on uncontrolled full power that they do not attract negative attention. Observation over all results Did you ever get the chance to look at the Arctic P12/P14 PWM PST CO (=Continuous Operation) version of this fan? The low noise area has always been the hobbyhorse of Arctic P12 fans. It seems almost magical how low the volume is in the respective speed ranges. And tending to put the icing on the cake, the Arctic P12 PWM PST A-RGB are even a touch quieter.

ARCTIC P12 - User Manual ARCTIC P12 - User Manual

By far the weakest fans in this test remain the Alseye X12, apart from that the last places are occupied by the NZXT F120 RGB and the Alphacool Aurora Rise. Case fan at maximum power Enermax makes up for the single LED ring with a circle of tiny pinholes in the rear housing. It’s not much, but it lets some of the light from the front-mounted LED ring shine through. It’s a nice touch and something more manufacturers could stand to implement in their own designs. Now I know, 600 rpm, okay, and as a sign that I appreciate that we have such demanding readers, I promise you that sooner or later we will create another mode, which will be twice quieter than the quietest mode that we have now. In addition, we will select fans that will have the highest airflow in the 31 dBA mode and there will be room for further noise reduction. Some fans cannot be slowed down even to 31 dBA mode and of the remaining ones, half of them have a speed of 600 rpm or lower. The NF-A12x25 PWM here allows setting some of the highest speeds mainly because it is PWM controlled, and now I’m not afraid to use the word extremely quiet running of the motor and bearings. This is also visible in the spectrograph, where in the frequency band of these components the noise is extremely low. Noctua deserves all the respect in the world here for going into such details as smoother/quieter PWM waveforms with a slanted left-hand side of the pulses. The price-performance victory is captured by the Arctic P12, P12 Max and the DeepCool FK120, which hardly leave any performance on the line compared to the pure winners despite the much lower price. The biggest shortcoming of Arctic’s original P-series fans is the rumbling sound profile. The manufacturer realized this and decided to do something about it. Sensibly, by implementing a hoop to eliminate the critical vibrations that are the source of the annoying acoustic profile. The implementation turned out well, and already the P12 A-RGB shows how much quieter it is compared to the older P12 model. And the list of improvements doesn’t end there.

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This is a good study of the effect of rings. The blades are a bit shorter so there’s less airflow at the same noise level (despite higher static pressure), but it suppresses blade vibrations very effectively, improving the noise profile for fans using flexible blades. 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).

Arctic P12 PWM PST A-RGB test – shining performance Arctic P12 PWM PST A-RGB test – shining performance

M on Get familiar with measuring the frequency response of sound I've been playing around with spectral analysis app on my phone to estimate RPM of... dimas on Not every Core i5-13400F is the same: Raptor (B0) vs. Alder (C0) lake sejak kapan ada i5 13500F ? kalau i5 13500 dan 13500T itu baru ada. As for the comparison of the paper specifications of the P12 and P12 A-RGB, I really don’t see the technical reason why the static pressure of the P12 at the same speed should be higher by… what, 25%, when at a speed lower by 200 rpm it should be +19%? It makes sense to me the other way round. Of course, a higher static pressure is indirectly caused by the larger hub, if only because it leaves a smaller empty area between the blades. The smaller the fan format, the higher the static pressure per unit of airflow. With the P12 A-RGB, the hoop itself also increases the overall pressure (i.e. static pressure as well) to a certain extent, as I mentioned in the article. EK is well known as a manufacturer of water-cooling components, including radiators. So it’s no surprise that their EK-Vardar EVO 120ER D-RGB fans excel at static pressure. The 3.16 mm-H2O rating of the EVO 120ER makes it the perfect 120 mm RGB fan for radiators and filtered intakes. it’s regular PWM, and as mentioned these are quiet enough to fase out at a distance, probably arms length is already enough and it never becomes audible from the actual use distance no matter the speed, it may be some artifact caused by a low PWM setting, maybe slightly flawed PWM controller on the board too as I imagine that may cause troubleNight Raid runs as a load in a continuous loop and thus ensures a reproducible load on the components. After a warm-up time of 10 minutes, the temperature of the graphics card and processor are measured and adjusted by the room temperature (temperature specification as delta in Kelvin). This means that you have to add this number to the room temperature. With a delta of 30 K and a room temperature of 21.5° C, the actual temperature is 51.5° C. Case fan at uniform 1100 RPM In the lower price range (which the P12 PWM PST is in) this can still be forgiven, but the more expensive the fan, the worse it gets. The easiest and cheapest way to suppress unwanted vibrations on the blades is by connecting the tips of the blades together to form a kind of hoop. This is also the case with the P12 A-RGB. The advantage of doing this is that cheaper material can still be used and yet the fan does not get into the same “acoustic trouble” as the older Arctic fans. The P12 PWM PST variant is the first to have this hoop. We’ve used other Fractal Design fans in some of our rigs before, and they’ve always been reliable and fuss-free. Their products are always a solid choice, and the Prisma AL-14/PWM looks to continue that tradition. How To Choose The Best RGB Fans 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 The P12 PWM PST A-RGB 0dB has 12 digital A-RGB LEDs in the fan scar. These can be controlled independently of each other and are compatible with the common A-RGB standards of leading motherboard manufacturers. The fan can thus be fully illuminated directly via the A-RGB mainboard connector or via an external controller and synchronised with the illumination of other hardware.