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 2, 2020 4:34 PM in response to Grant Bennet-Alder

Well, I hope there will be a firmware solution. I know we can't break the laws of physics with hardware, but I believe there is a way to configure the OS core to trigger these Turbo Boost spikes "smoothly". Flatten the curve, you know. As to me, it would be ok to get a completely silent device as a trade off for 5-10% performance. Not 40%, as with Turbo off.

May 2, 2020 5:54 PM in response to arseniy_nikitochkin

Paradoxically, traditional Software Development is one of the few intensive activities that is still largely single-threaded.


At this writing, that single-threaded performance appears to come at the price of some noise.


Have you optimized everything else you can? Like I/O? Sources and Destinations on different drives, and both different from the boot drive?

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 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.

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

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