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

May 4, 2020 12:32 PM in response to TimUzzanti

TimUzzanti wrote:

The customer doesn't to have a voice anymore relating to Mac side of the business.


The customer has the loudest voice possible when it comes to Macs: they can choose to purchase or not.


If customers don't buy their products, Apple goes away. You can't get more power than that.


The fact that the Apple Business team has bent over backwards to allow you to return your machines way, way past the 14 day return limit is in itself a sign of extreme customer focus.

May 4, 2020 12:39 PM in response to Dogcow-Moof

William Kucharski wrote:

The fact that the Apple Business team has bent over backwards to allow you to return your machines way, way past the 14 day return limit is in itself a sign of extreme customer focus.

I think the fact that Tim and his team spent valuable time evaluating the product, trying every way possible to push for a solution - or even just a response to say there is an issue here we will fix it - tells a lot more about the situation here.


There was no solution offered and what is worse is there is no acknowledgement of the issue, let alone someone saying that they are working on a fix within a proper timeframe. That is the opposite of customer focus, that is ignoring the customer.

May 4, 2020 12:39 PM in response to Dogcow-Moof

Apple Business Team acknowledged the issues we showed them and increased our return policy because they said Apple had a 3 month period after new products to resolve odd issues. As time went on the Apple Business Team stopped acknowledging the issues and said "you might want to try a Mac Pro" to connect external monitors.


That is the insanity of this situation. Each and every department in including the community has walked backed the problem and doesn't discuss it and tries to suggestion switching to another product line. Its crazy!


That is the opposite of customer service!

May 4, 2020 12:50 PM in response to TimUzzanti

You stubbornly ignored the advice of said Apple Business team when they suggested a machine better suited to your use case. I realize there are differences in form factor and price that made that solution non-optimal to you, but it is what it is. We've gone around and around on that - the MBP 16 certainly is capable of doing many things, but it's not necessarily the best tool for the job.


Once again, you can't get better customer service than a company extending their own written return period to make you, the customer happy. You'll find most PC vendors would have told you in the same situation to sell your machines on the used market. I can connect you with people who have been told just that by companies in the PC marketplace whose names are two, three and four letters long.


Ultimately, your road has come to the end, and it's too bad your firm will now have to deal with Windows. Don't be surprised when those PCs start firing up their fans.

May 4, 2020 12:49 PM in response to TailsDog

TailsDog wrote:

There was no solution offered and what is worse is there is no acknowledgement of the issue, let alone someone saying that they are working on a fix within a proper timeframe. That is the opposite of customer focus, that is ignoring the customer.


A full refund way beyond the written return period is incredible customer focus. Try finding that with most any other consumer product, or for that matter from a PC vendor. An integrator or third party reseller would likely be willing to take that hit, but try calling the vendor of your PC laptop to complain that the fans are running too fast and the internal temperature of their laptop is too high for your tastes.

May 4, 2020 12:54 PM in response to TimUzzanti

TimUzzanti wrote:

And we have gone through 20+ laptops and paused Company Wide purchases for months and spent thousands of dollars on peripherals such as eGPU's etc. so people could use the 16inch MBP's in the meantime as we attempted to provide whatever information Apple needed to fix the issues.

Do you not think this cause us a ton of trouble?


For your machines with graphics issues, I understand Apple replaced them quickly.


For your other machines, I don't get why people insist on using laptops where a desktop or tower configuration is more appropriate. You can, but it won't be an optimal solution, and I think everyone recognizes that.


I still think you'll find the same when you start using PC laptops the same way.

May 4, 2020 1:03 PM in response to TimUzzanti

You can do it, it isn't optimal. Why do you insist on ignoring that part of my statement?


You can load up a compact pickup truck with a four cylinder engine and haul with it, and it will work, but you'd be a lot happier doing it with a full size pickup with a large V8 or diesel engine.


The same is true here; you can connect a display or displays to an MBP 16, and it will work happily all day, every day, but the fans are going to run in some/many cases due to the increased thermal load you've put on the machine. The MBP 16 is still functional but it is working a lot harder than a desktop or deskside machine would under the same circumstances.


I've said before it's like trying to edit multiple streams of simultaneous 4K video in Final Cut Pro X on a MacBook Air; you can do it, but it won't be as pleasant an experience as it would be on a Mac Pro.


That doesn't mean you have to buy a Mac Pro to do it, but you also shouldn't complain when the Air doesn't do it in real time.

May 4, 2020 1:04 PM in response to Dogcow-Moof

William Kucharski wrote:

For your other machines, I don't get why people insist on using laptops where a desktop or tower configuration is more appropriate. You can, but it won't be an optimal solution, and I think everyone recognizes that.


Doing a Zoom meeting on a laptop while using an external monitor should not need a powerful desktop machine. A MBP should be able to handle it just fine. In fact, the last gen did it ok. Some people want the flexibility of using a laptop - in this case would you suggest going back to the 2018 MBP as an optimal solution?

May 4, 2020 1:05 PM in response to Dogcow-Moof

Well, If i knew this computer can't work with external monitor, I just would have bought the "Mac Mini" which is way cheaper. But I wanted to use as a laptop when I travel, that's the reason.


I know you are trying to help William, but that's not the solution, as the machine gets really hot, it also slow down the performance to avoid throttling. I have a HP PC laptop and does not have this issue (and has lower specs) let's recognize is not normal to get that hot with external monitors and let's try to find a solution (:

May 4, 2020 1:08 PM in response to TailsDog

TailsDog wrote:

Doing a Zoom meeting on a laptop while using an external monitor should not need a powerful desktop machine. A MBP should be able to handle it just fine. In fact, the last gen did it ok. Some people want the flexibility of using a laptop - in this case would you suggest going back to the 2018 MBP as an optimal solution?


I haven't read that the MBP 16 doesn't do it "OK" aside from complaining about fan noise while it's doing so.


If all you are doing is a Zoom meeting, why do you need an external monitor? But that's personal preference, and that's fine.


Once again, it's not that the MBP 16 isn't doing what you want, it's that it's not doing it in the way you would prefer.


The fact that some past generation model could do it is immaterial; it also didn't have anywhere near as powerful a CPU or GPU inside, and running around town in a vehicle with an all new to the model 6.0L V8 is going to use more gas than doing it in the 1.8L four cylinder model you used to own. It doesn't matter that you're only going 25 MPH down a city street in either vehicle.

May 4, 2020 1:11 PM in response to Dogcow-Moof

Tim I know you have been frusturated by the new MBP and I wish that were not the case.


You say:



Based on these:

We are testing two new 16-inch MacBook's before doing a rollout across our organization.

and

And we have gone through 20+ laptops and paused Company Wide purchases for months and spent thousands of dollars on peripherals such as eGPU's etc. so people could use the 16inch MBP's

Why did you buy 18+ more when the first two from the very beginning never panned out?


I personally am still very happy with mine with dual 4k screens for design and video editing and and I am sorry that yours have not worked out for you.

May 4, 2020 1:11 PM in response to AlejandroKL

AlejandroKL wrote:

I know you are trying to help William, but that's not the solution, as the machine gets really hot, it also slow down the performance to avoid throttling. I have a HP PC laptop and does not have this issue (and has lower specs) let's recognize is not normal to get that hot with external monitors and let's try to find a solution (:


Really? Does that HP have a Radeon 5000 series GPU? How about an Intel 9th generation i7 or i9 CPU?


You can only compare equals to equals.


The MBP 16 works with an external monitor, just perhaps not in the way you would prefer it to.

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MacBook 16-inch Fan Noise

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