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MacBookPro 16-inch has current noise, cpu turbo frequency noise?

I found that during the use of the newly purchased MacBookPro 16-inch, such as opening large software and restarting the system, noisy sounds will be heard under the keyboard. Should be the noise caused by Intel CPU Turbo? Some in the community also said that it was noise from SSD read disks. It's strange to hear this kind of sound at night when it is quiet. Is it a quality problem? Is it normal? Does everyone's MacBookPro also have this current noise? Wait for your feedback, thank you. (My MacBookPro 16-inch is i9-9880H CPU and 1T SSD)

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Posted on Jan 1, 2020 5:52 PM

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Posted on Apr 4, 2020 2:01 PM

Model - MacBook Pro 16, Intel Core i7-9750H

The coil whine appears when there is a sharp high power supply to the processor.When the turboboost is turned on, the power is jumped to 80 watts and the squeaking is heard. If you turn off the turbo boost and run the test, the power will not rise above 40 watts and the coil whine will not be heard. For the load testing was used Geekbench. For power measurement, the Intel Power Gadget was used. Turbo Boost Switcher was used fo turn on/turn off turbo boost.Below images with measurement.

With turboboost on




With coil whine - turbo boost on


Without coil whine - turbo boost is off


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76 replies

May 3, 2020 10:56 AM in response to area3d

I just want to add to the discussion here. I am certain at least for some of us, I don't think it's a SSD write/read or issue related to while the CPU is under load.

I own a MacBook Pro 16" (upgraded to 2.4Ghz 8 core i9, 64GB RAM, and Radeon Pro 5500M with 8GB memory, in case it's one of the upgraded components that is contributing to the issue). The sound does not sound like the first YouTube video mentioned in this thread of a SSD being written to. It has more of an intermittent sizzling/hissing sound. It comes from under the keyboard area(not the edges near the speakers) but I can't seem to pinpoint where. For me, this happens while under no load whatsoever. Just having the Mac on will make this noise. Putting it under load doesn't seem to make the noise change.


Was on Apple's chat support troubleshooting this as well. One of the things Apple support and I found was that the sound is not tied to software as it makes this noise no matter where I am, normal macOS, recovery partition, even when just at the boot selection window when just holding down option on start up.


I can't tell or notice if there's a performance hit or anything because of this, but its enough to be distracting from working on the Mac in quiet places as its a very distinct and noticeable pitch.

May 4, 2020 7:59 AM in response to shpakdm

Turbo Boost boosts the clock rate on small number of processors when the rest are idle and the processor chip is comparatively cool. When many processors are in use, such as doing high-end work, Turbo Boost is not available.


If the noise bothers you, there are third-party utilities to turn off Turbo boost. The decrease in real-world performance is very small.


For software development, this means you will, wait a little longer for your single-threaded complies to complete, but it will be less irritating while you wait.

May 4, 2020 8:36 AM in response to shpakdm

" It is not about cooling - the noise comes from bad quality inductors - `coil whine` it is not about cooling "


Then that would suggest Dell and Lenovo install bad quality inductors as well. Forums are constantly complaining about coil whine on these brands as well. I can't say you're right or wrong but I'm not convinced something is of "bad quality" when other major manufacturer's laptops exhibit coil whine.

May 4, 2020 8:44 AM in response to shpakdm

I didn't say every model has coil whine. The 13" machines are not high performance machines with dGPU's. The same with Lenovo's Thinkpad X1 Extreme. It's a 15" with a dGPU and an 8 core processor. It exhibits coil whine. The Dell XPS 15" also with a dGPU also exhibits coil whine. I'm only mentioning these other brands (especially the Lenovo) because they are expensive and Lenovo's X1 Extreme is just as expensive as the 16" MBP, so the amount someone pays will not dictate if coil whine will exist or not.

May 4, 2020 3:07 PM in response to area3d

Seems to be that SOME here are shunning the fact that other brands like Lenovo and Dell that have incessant coil whine as well and should be ignored so we can focus only the MacBook Pro, which is ridiculous. The point is coil whine is common (for those that experience it) amongst Windows machines as well. Of course people here just want to make it about Apple as if Apple is the only one just so the blame lies only on Apple. Doesn't change the fact that coil whine is common amongst all computer manufacturers. It's silly to give other brands a pass and only place blame towards Apple.

May 4, 2020 3:30 PM in response to shpakdm

The Lenovo Thinkpad X1 Extreme 2 is the same pricing as the 16" MBP and it exhibits coil whine. The Dell XPS 15" also exhibits the same thing. Demanding a replacement will reward you with the same machine and same coil whine. People here are expecting Apple to have some magic potion to get rid of the coil whine when Apple is using much of the same sourced components as every other computer manufacturer.

May 4, 2020 3:36 PM in response to shpakdm

Thanks, that means you ignoring facts. Also I never once said ALL MacBook Pro's will have coil whine. I SAID it's common amongst all manufacturers. Trying to play the coil whine lottery by constant returns of the 16" will lead you into a refund. Companies generally issue you a refund after the 3rd exchange.

May 4, 2020 3:38 PM in response to DPJ

No this means that apple instead of good quality control give some people macbooks without coil whine, But for Another people - with coil whine - so is this serious on you mind?(please dont give other companies notebooks examples - if i bought other company notebook notebook i would had same conversation on their forum)

May 4, 2020 3:45 PM in response to shpakdm

"please dont give other companies notebooks examples - if i bought other company notebook notebook i would had same conversation on their forum)"


Just to be clear, my post earlier was in response to someone else. You began replying to me on your own. You don't have to agree with me but I was talking to someone else here. I will continue to post examples when it's relevant to the coil whine some are experiencing. It is very relevant as some on this forum only want Apple to be blamed while remaining silent about other companies. Often when people are frustrated here they immediately start saying what they can get better on Windows, so talking about other manufacturers here is relevant and common.

May 4, 2020 4:34 PM in response to DPJ

My point is not about blaming Apple for coil whine in general, my point is that MBP 16 model design is poor compared to previous macbooks, because they had whine to, but it was much quieter. This time it's much louder and really annoying. May be the larger gaps in new scissors keyboard are just letting more sound out? Why 2017 MPB 15 doesn't sound like a floppy drive, but this one does? They aren't supposed to have many differences: the same design with touchbar, the same Intel 14nm architecture.

MacBookPro 16-inch has current noise, cpu turbo frequency noise?

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