MacBook 16-inch Fan Noise

We are testing two new 16-inch MacBook's before doing a rollout across our organization. Under low loads (25% cpu utilization), fan noise will get annoyingly loud. We're not doing any GPU related and more routine work such as: using web applications, debugging web pages, Microsoft Teams conferencing (audio/video) with a handful of people, Photos downloading from iCloud, Mac Mail downloading a new mailbox from Exchange.


We DID NOT notice this on our 2015 MacBooks and this might prevent us from continuing the 16-inch MacBook rollout in our organization.


Interested to hear others experiences.


Tim

MacBook Pro 16", macOS 10.15

Posted on Nov 21, 2019 11:34 AM

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Question marked as Top-ranking reply

Posted on Dec 23, 2019 9:27 AM

All,


We are kind of wrapping up all our testing and working with the Apple Business Team to figure out how we move forward.


This thread is getting a little side tracked with monitors and so I wanted to point out that these issues discussed are completely unrelated to brand/model of monitors being used. That said, it IS related to having monitors connected and the internal GPU within the MacBook, along with the CPU and the overall heat that both generate.


In our final testings, we did clean installs with 10.15.2 and primarily tested an eGPU using a Razor Core and a Radeon RX Vega 64 so we could eliminate the internal GPU in the MBP.


It became really clear the combined heat from the internal Radeon Pro 5500m GPU and the i9-9880G CPU is too much for the current thermal management system, especially when using all USB-C ports. (I.e., for power, USB-C hub, USB-C to Display Port video cables).  From all the testing and heat generated by the unit, it looks like our Radeon Pro 5500m GPU is fried because we are seeing artifacts on text (laptop display and external monitors) but not when we use the eGPU.


Just so you understand our configuration with the eGPU:  We have one USB-C Hub connected to the MBP and one USB-C cable connected to the eGPU.  The one USB-C cable to the eGPU is powering the MBP but also the eGPU has the two Display Port cable to the monitors.  Now the MBP has two free USB-C ports.  This was producing about 38 degrees less heat in Airflow on the MBP.


When the eGPU is connected, we can push the MBP to about 60% CPU for sustained periods before hearing the fans at about 4500 RPM. But as many of us have noticed, when we don’t have an eGPU, we’re seeing this at 5% to 10% CPU.


We have installed Parallels and ran Windows 10 on three monitors on separate space and have done Geekbench tests and a variety of stress tests with the eGPU and its operating normally.  


Bottom line, the combination of using the GPU and CPU is pushing the MBP into heat conditions causing the FAN issues and in our case, possibly damage to the GPU.  


Apple had a similar issue with the 2018 MacBook Pro and people were starting to stick their machines inside a Freezer to see if they could avoid the CPU’s from stepping down prematurely.


Hopefully Apple can find a solution because these new 16 inch MBP could be incredible.


Please start a support case with Apple so we can get this resolved sooner than later and it will also protect you a bit more if you need to return your units beyond the return policy. Moving forward, its all on Apple!


Tim

4,224 replies

Apr 27, 2020 6:55 AM in response to pairadime

"So I would like to request that you post scientific proof that the Intel gpu in the 16" machine is a lower grade than AIR's or 13" MBP."


I'd be happy to do that but certain individuals on this thread have been requesting that the thread remain on topic, and your request of me is off topic, so we'll leave it at that. Have a good day. 😊

Apr 27, 2020 3:24 PM in response to pairadime

With NO external display, the video runs in VLC. acceptably But get this, it never switches to dGPU. When I manually switch to it, it runs worse with the dGPU. Very odd.

That is very odd. So only internal display with the dGPU active an 8k video is playing worse than with just the integrated GPU? I will download it and see if the same is happening for me.


DPJ maybe you can test this on your machine, as you have no issues usually? Or as you are a video editor you probably have dealt with 8k content before, has it caused you an issue in the past with the dGPU or does it work fine for you?

Apr 28, 2020 3:08 AM in response to TailsDog

I really don‘t want to judge anyones behaviour in here, but for somebody looking for relevant new information it is very hard to follow this thread just because it is full of meta communication.


Perhaps it could help to stop discussing every single opinion that has nothing to do with the issue itself.


What I am trying to say is: try to not adress William or DPJ and perhaps they wont show a reaction then. The discussion about defective or not, difference between expected and guaranteed behavior of the machines and forum rules is really annoying, therefore filling about 50% or more in this thread.

Apr 28, 2020 5:12 PM in response to -AndYou-

> Interestingly enough I have not had this problem with my 2015 13-inch MacBook Pro. I guess I assumed that I was upgrading to a computer that could run the same work load while being more efficient... I guess I was wrong and should have stuck with my 5 year old computer for better performance


It's funny you mention that, because I considered my 2010 17" Macbook Pro more powerful than my 15" 2015 Macbook Pro, because I could run the identical workload on both of them side by side, and my 2010 would run it whisper quiet, while my 20151 would set off its fan like a blow dryer. Steve Jobs famously hated noise even in desktop computers, and I'm sure he'd've never put up with that. ;)


Here's hoping that Apple *IS* aware of this, and doing the usual thing of keeping completely silent on it but are working on a solution. Now that the keyboard is fixed, obnoxious fan noise is my #2 issue. :)


Apr 28, 2020 5:15 PM in response to jdiamond

" Steve Jobs famously hated noise even in desktop computers, and I'm sure he'd've never put up with that. ;)"


Haha that's rich! I guess you never heard the PowerMac G4 MDD. The fan noise was so bad it made public news and could easily be heard from outside the Apple Store. Apple had to do some special firmware update to make it tolerable until they discontinued it.

Apr 30, 2020 3:27 PM in response to wealthandnecessity

wealthandnecessity wrote:

And it looks like they banned the OP for no reason too for a while who was a major contributor to this thread.


People only get "banned" for repeatedly violating, after receiving multiple warnings, the Terms of Use he and everyone else here agreed to follow to post to the Apple Support Communities.


Apple Support Communities Use Agreement - Apple Community

Apr 30, 2020 3:32 PM in response to TimUzzanti

TimUzzanti wrote:
 
Having started this thread 5 months ago, and attempting to work with a variety of teams at Apple -- all of which apparently had no ability to do anything -- as well as my employees working directly with Apple Engineers that we contacted (or who contacted us) we're no closer to a solution. We've seen no results and in most cases the engineers who we have been in contact with have stopped responding to us. We haven't even gotten an acknowledgement of the problem.


You have been told repeatedly by multiple contributors that Apple does not "acknowledge" issues and that Apple Engineers as a rule do not get back into contact after receiving the data they had requested from you (and the fact that they also read these boards, if they do so, on their own time, not as part of their jobs.)


To be honest, the last straw was being banned on this community for a week while this thread had been constantly derailed by moderators. I'm the CEO of multiple companies with many employees and spend significant amount of money on IT procurement for our own companies as well for an MSP. For a company to have a policy to not acknowledge an issue and a moderator team willing to use that as an answer blows my mind. That is not a company we can work with and not how we run our companies.


You had multiple posts removed for violating the Apple Support Communities Terms of Use, you were warned of what would happen if you continued to do so, and… you continued to do so.


Moderators don't care about your posts, they only care if you are violating the Terms of Use… which you willingly and repeatedly did.


If it "blows your mind" that a company that does not acknowledge issues in public dared to… not acknowledge your issues in public, so be it. Good luck with whatever vendor you decide to go with next, as no PC maker acknowledges issues in public, either, so I'm not sure where you will turn. Certainly I know people who spend eight figures or more per year with Dell, HP and Lenovo who have never had any of them "acknowledge an issue" with their systems.


Best of luck in your future with whatever solution you choose.

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MacBook 16-inch Fan Noise

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