I talked about the revisions with people in the community and I was able to know there are the revisions as below: P12 PWM PST - Up to Rev.3(Value pack), Rev.4(Single pack, Black), Rev.4(Single pack, White) P14 PWM PST - Up to Rev.4(Value pack), Rev.4(Single pack, Black), Rev.3(Single pack, White) Checked features of each revisions from now: * P12 PWM PST Black Rev.1 - Remained resonant noise, no PWM 0% mode, 0.08A of current Rev.2 - Remained resonant noise, no PWM 0% mode, 0.08~0.10A of current Rev.3 - No resonant noise, PWM 0% mode added, 0.10A of current Rev.4 - No resonant noise, PWM 0% mode added, 0.10A of current * P12 PWM PST White Rev.1 - Remained resonant noise, no PWM 0% mode, 0.08A of current Rev.2 - Remained resonant noise, 0.08A of current Rev.3 - Remained resonant noise, 0.08A of current Rev.4 - To be confirmed * P14 PWM PST Black Rev.1 - Remained resonant noise, no PWM 0% mode, 0.12A of current Rev.2 - Remained resonant noise, no PWM 0% mode, 0.12A of current Rev.3 - No resonant noise, PWM 0% mode added, 0.12A of current Rev.4 - No resonant noise, PWM 0% mode added, 0.12A of current * P14 PWM PST White Rev.1~2 - To be confirmed Rev.3 - PWM 0% mode added, 0.12A of current
also bought P12 PWM PST Black Rev.4 and no PST version, both have whine resonant noise at 42%~980rpm and 53%~1190rpm but very low almost not noticeable, much better than rev.1
The noise test is best done with a Rode NT1 microphone not USB. I don’t recommend the Lewitt LCT 540S microphone, it’s a little worse than the Rode in terms of noise, and there’s comb at high frequencies. Arctic P14 Black 140mm 3-pin very noisy electronics. If you lean it against a table, there will be a loud crack.
Great video and awesome awareness with the revision thingy! I've some questions regarding this: 1.) Is there any way to predict which revision you'll receive before purchasing? (e. g. via manuals, description) 2.) Are the new revisions only available among the p12 PWM >>>> PST
1. For P12s, yes. For P14s, no. You can predict the revision number by checking a current of the P12 product. 2. It seems that P12 PWM has Rev.3~4 revision, checking its current is 0.10A. But, I don't know P12 PWM has no or less resonant noise than before because I have never bought it before. 3. The content of Arctic's reply is as below: "Regarding the revisions, I'm afraid I have to agree with you that I can't give out a full list. Revisions are changes that have no influence on the function and often come with small improvements, e.g., in efficiency or sinus magnetization. For the customer, these are usually hardly noticeable. If you have questions about a specific revision, I can help you with that." It seems that although newly manufactured P12/P14 series fans are almost Rev.4, some of them actually have not properly applied the improvement for the noise. I bought 11 P12 PWM PSTs and I hear no or really small resonant noise. However, I got 5 P14 PWM PSTs and they obviously have the noise at some RPMs. Interestingly, I had one P14 fan replaced with a bad bearing by the local distributor and the exchange product has no resonance. So, please do not completely trust the information about the topic. Even though it was a video I made, I should admit that this may be a bit of a hasty conclusion. There is a randomness about the existence of resonance.
Any idea if the ARGB versions of these fans have/had the same issue? It seems like they use a different motor or at least have the same one tuned differently.
P12 ARGB has some resonant noise for 2~3 RPM points and P14 ARGB has the noise for 0~1 RPM points in my experience. Of course weaker resonance occurs from ARGB series than the normal ones. ARGB series has the outer ring, slighly bigger motor hub and a bit more capped rifle bearing. One(or more) of them may affect reduction of resonance for ARGB series. But these sentences are only from my experience so that please check other reviews before getting them.
Are there any new informations regarding this topic or a time frame for each rev? I need 9x P14 PWM PST for my radiator. Someone next to my place sells a few white and black ones ( haven't yet decided which color I pref.). But apart from the fact that he bought them mid 2022 I know nothing about the rev. Packaging doesn't exist anymore. Since they aren't dirt cheap I would prefer newer revisions but just picking them up instead of shipping is convenient too. Is black or white better or are the timings for their revisions the same?
Rev. 3~4 revisons have been available since 2023. (in my region at least) Also some reviews about white fans of P series claims that there are still resonant noise from them. Plus, I bought 5 black P14 PWM PSTs and they have the noise at some RPMs. The only things I haven't heard resonance is P12 PWM PST Rev.4. So my conclusion was hasty judgement. It seems that newer revisions obviously have less resonance than older ones, but this doesn't mean the resonant noise doesn't exist at all for all products. So please check the recent customer's review about them at the online malls before buy them.
@@ThermalLeft bought 9x p14 white/transparent with unknown revision. They are installed on my MoRa3 Radiator and spin with very low rpm. I put rubber bushings between each fan and the radiator. I can't hear them at all. While they might be not great for an air cooler...at fixed rpm they are amazing. Since I use DC not PWM I can't tell if fan stop would work. At low rpm I can't hear them anyways so there is no need for that function in my case.
@@herrsalz278 Thank you for the update! I think P12/P14 are the most suitable options for external radiator. Especially, they works well for 'pull' position. Some high-end fans, which have excellent noise-airflow efficiency for 'push' position, show weakened efficiency for 'pull' position. But P12/P14 are very good for both 2 scenarios and also cheap! Even though they have mediocre maximum performance, it seems that many owners of external radiator system usually choose P series due to this reason.
So if I get the P12 PST 120 Black aRGB fans with the 0Db mode, does this mean they're likely to have little to no resonance, the same as your rev 3 test?
P12 ARGB has some resonance. Although I didn't record it yet, you can find other author's noise sample that shows the resonant noise of P12 ARGB. It usually makes the noise for 2~3 RPM points.
Yes, their main feature was gone for those samples. But more cross-validations are needed, because we can find only a few reviews/noise samples about these revisions.
I have a P14 ARGB pwm pst as one of the exhaust fans and it's super quiet, is the P14 PWM PST rev 4 now as quiet as the P14 ARGB? Because I have 3x brand new A14 Chromax as intake but they sound like a prop plane spinning up, they are really super mega loud, maybe the front grid of the case (enthoo pro) is resonating too much, but I want to swap them with standard P14
I felt P14 ARGB has slightly better noise profile than P14 Rev.4 due to a ring that connecting outer part of a rotor. Before you buy P14, how about temporarily swapping the current intake fans into P14 ARGB which already you have and testing noise? If you have the matter of loud noise with NF-A14, the same problem may appear even after changing to P14. So, if you have no acoustic problem with P14 ARGB at intake fan, you are OK to go with P14.
@@ThermalLeft that's a very good suggestion! Thanks Tomorrow I'll test the P14 argb as intake. Moreover, I'm also waiting rubber pins to arrive so I can replace all the screws with those and test everything again ahah
Update just to let you know, I'm waiting for the P14 fans, meanwhile I tested the front even with 2x Phanteks M25 140mm which should be "loud", bro at 100% I couldn't hear them from where I usually sit... I already rma'd the Noctuas A14
@@EttoreB93 If what you said is true, that's quite strange. I have two of them now, but I measure and feel that NF-A14 has lower maximum noise than PH-F140M25. Maybe your NF-A14s are IndustrialPPC variant? Anyway, I hope you completely resolve the matter easily with P14s!
@@ThermalLeft Maybe it's my ears that are more sensible to the A14 sound? I don't know, but they really were way unbereably more audible to me than the phanteks... Probably the phanteks are behaving normally and the Noctuas were a bad batch? They were labelled as Made in China
It depends on your previous experience. If you don't hear resonant noise from Rev.2, then it is not worth it to change. P.S. You may need to find other author's information to cross-validiation.
Finally, it was about time. Now i just have to play some shuffle lottery to get the good revision... Judging by the changes, they replaced fan motors (maybe finally ran out of stock of those previously used). I have interesting bit of information (again). When using 2 or more of these chained together, they become noisier for some reason. The moment, i unplugged 1 of the 2, the other one became less noisy (it didn´t matter, which one was unplugged). It also didn´t matter, if i used PST or Noctua Y splitter.
There are the revisions up to Rev.4. Maybe the revision which you can get currently can be older ones. (Rev.1~2) It seems that the old versions are still existing on a market. I noticed the change of a material. P12/P14 Rev.3~4 have less textured plastic than before. I think this difference can be the other possible cause of the noise change. Meanwhile, I'll try the thing you explained above later!
@@ThermalLeft i´m 100% sure this is about motor noise and not material. Various other fans on the market suffer from the same issue. Be Quiet LightWings HS, Silent Wings HS, some Corsair fans... I think, there just aren´t that many fan motor manufacturers. Arctic currently seems to have started caring about quality of their products (if i had to guess, it may have something to do with them being bought by Corsair). I´m gonna try to get both, mostly out of interest. Although i have some doubts about their airflow ratings. I mean, according to Cybenetics tests, Noctua´s claimed "102 m3/h @ 2000rpm is actually 95 m3/h @ 2100rpm, so i highly doubt this standard fan of the same thickness will have higher airflow at lower speed & lower noise. Igorslab did some testing, but Igor´s test results are unbelievably good. I have 1 Arctic P12 with exceptionally high airflow, but that´s because it spins at 1950 rpm. Unusable past 95% of PWM due to motor noise (I believe, Bionix fans have the same flaw). I´m mainly interested in testing P14. After all, nowadays getting 140mm fan of good quality, that also offers some airflow, is expensive. If they truly will be so quiet, i will consider using them in the case and on the D15S as well. If i stumble upon the older revision, well... i´m not even gonna bother unpacking them, i will just send them back.
@@ThermalLeft It is likely the material change (increase in strength?) which resolved the issue, if HWcooling is correct in their analysis that the hum is generated by the blade vibrations. Maybe you can make a video where you demonstrate the differences in material, perhaps by placing some weight on the blades and see how much they flex, and maybe measure any differences in mass.
@@Morpheus-pt3wq There is the resonant noise from a motor(or inner drive structure), but they usually have 200~300Hz of frequency range. So, more inspection is needed to choose a better hypothesis about the resonant noise. I think the cause is more like the minute vibration of blades, but other possibilities should always be kept open. The value of airflow can be differ according to the results of each measurer. Parameters of wind tunnel(diameter, length), flow straightener(grid shape, thickness, grid distance), anenometer(vane diameter, vane shape), characteristics of a fan to test(manufacture tolerance) and more can affect the airflow result of a fan. So we can't expect each result to be exactly the same. Considering above enginnering level details, I think Cybernetic's test is quite accurate because a difference rate is about
@@MY-qi8wq Good idea. But I'm not sure I can experiment it well without an acoustic issue. I'll try and error by adjusting a position of what is attached to the tip of the blade. I expect checking it for P14 Rev.2 can give me a meanigful conclusion. I will do it with FFT analyzation.
