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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

Reply
4,224 replies

Sep 3, 2020 10:52 AM in response to wealthandnecessity

Have you tried using Turbo Boost Switcher? I am Not being facetious.

This machine runs way too hot with Turbo Boost enabled.


This computer was built with a ninth generation 14nm processor. The only way to meet the target performance was to make it a six or eight core processor. This processor generates an enormous burst of heat when it does Turbo Boost, and there is only one cooling rail shared by both the CPU and GPU. So getting Either side too hot ramps up the fans.


This processor was supposed to be an eleventh-generation 7nm processor, but intel is three years late, and is only starting to ship its tenth generation 10nm processors now.



Sep 3, 2020 2:16 PM in response to Grant Bennet-Alder

Grant Bennet-Alder wrote:

This processor was supposed to be an eleventh-generation 7nm processor, but intel is three years late, and is only starting to ship its tenth generation 10nm processors now.


FWIW, the HP Spectre x360 I've referenced that heats up and fires up its fans when you do as little as click through the Windows Settings menus using just the internal display?


10th Generation i7, so I don't think that would have helped any.

Sep 4, 2020 5:01 AM in response to denizcan

Most of the machines you cite are less powerful than the MBP, and of course all of them force you to use Windows, which IMHO is a punishment at best.


You are of course free to purchase whatever meets your needs; note the cheaper the computer and less powerful the Intel CPU and/or the less powerful the GPU, the less heat they will generate (as will operating at slower speeds.) Older, slower laptops may produce less or more heat, depending upon their characteristics and design; the fact that an old Acer Ferrari 3000 spins its fans up to maximum five minutes after boot and they stay there is a data point but not really germane to this discussion.


As another example, the GTX 1650 Ti GPU in the Dell does not perform as well on graphic benchmarks as does the AMD Radeon Pro 5500M.


You are also acting as if the fan increase is a given; I have listed at least two monitors I can use with my MBP 16 without ever hearing my fans become audible.


The MBP 16 has the most powerful Intel CPU and most powerful AMD GPU they can stick into the case, and thus will generate the most heat of any Apple laptop and more than most PCs - and the thermal design of the MBP 16 manages it the best that can be done in the form factor.

Sep 4, 2020 5:03 AM in response to Dogcow-Moof

What kind of troll are you?


here are more than 2400 people with the same problem. When I connect an external screen with 2% load on the cpu the fan is audible. To me that sounds not like a pro device but more like a design failure. So please spare us your opinions. We try to solve the problems that Apple left us with. MacBook Pro is a half naked beta product

Sep 4, 2020 9:58 AM in response to Grant Bennet-Alder

Grant Bennet-Alder wrote:

Have you tried using Turbo Boost Switcher? I am Not being facetious.
This machine runs way too hot with Turbo Boost enabled.

This computer was built with a ninth generation 14nm processor. The only way to meet the target performance was to make it a six or eight core processor. This processor generates an enormous burst of heat when it does Turbo Boost, and there is only one cooling rail shared by both the CPU and GPU. So getting Either side too hot ramps up the fans.

This processor was supposed to be an eleventh-generation 7nm processor, but intel is three years late, and is only starting to ship its tenth generation 10nm processors now.



Yes I have tried Turbo Booster Switcher. The difference is pretty minimal whether turned on or off the fans still go crazy and the aluminum above the touchbar still gets crazy hot when an external monitor is attached.


The issue is the discrete GPU going crazy maxed out when an external monitor is attached so getting the CPU slightly cooler doesn't seem to make much of a difference.

Sep 5, 2020 3:22 AM in response to Dogcow-Moof

LOL, in the past you were against the benchmarks.. At least that is an improvement.. BTW, between 1650TI more powerful than 5300.. 5 year old, 4 series intel CPU, 8th series nvidia gpu is power hungry at idle.. Whatever..


"You are of course free to purchase whatever meets your needs".. Am I? I need a >15" MacBook that has recent 45W CPU that has reliable keyboard, does not consume 20W (Are we in early 2000's? REALLY?).. I need that just for iOS support, faster Xcode experience.. What product do you suggest? We don't have that freedom when we talk about MacOS.. We are chained to whatever Apple gives.. Shall I use Hackingtosh? I wish I had that time..


This issue is not related to the power of the components.. It is related to the software.. When I connect to external monitor, and let computer sit, what powerful thing am I doing that causes system to consume extra 20W? I, my friends stopped using this thing with external monitor.. Not only the heating issue but there are other glitches..


This thing is early released product and Apple does not care to fix the problems.. It is possible they rushed the product for shopping season.. It's been more than 8 months they didn't release Bootcamp drivers and those drivers have tons of bugs.. Etc. Etc..


How can I unsubscribe from this forum? Even that simple thing has bug..

Sep 5, 2020 8:28 AM in response to denizcan

denizcan wrote:

LOL, in the past you were against the benchmarks.. At least that is an improvement.. BTW, between 1650TI more powerful than 5300.. 5 year old, 4 series intel CPU, 8th series nvidia gpu is power hungry at idle.. Whatever..


I've never said I was against benchmarks.


"You are of course free to purchase whatever meets your needs".. Am I? I need a >15" MacBook that has recent 45W CPU that has reliable keyboard, does not consume 20W (Are we in early 2000's? REALLY?).. I need that just for iOS support, faster Xcode experience.. What product do you suggest? We don't have that freedom when we talk about MacOS.. We are chained to whatever Apple gives.. Shall I use Hackingtosh? I wish I had that time..


You have to make a decision based upon what the market has available, let's be serious here.


"Hackintoshes" violate the macOS license agreement, so they should never be a consideration.


This issue is not related to the power of the components.. It is related to the software.. When I connect to external monitor, and let computer sit, what powerful thing am I doing that causes system to consume extra 20W? I, my friends stopped using this thing with external monitor.. Not only the heating issue but there are other glitches..


I've stated AMD's rationale several times. You can choose to believe it or not, but they haven't changed their stance.


Sep 5, 2020 2:58 PM in response to adaptiv

The fan is audible because the discrete GPU is always used whenever you connect an external monitor to a MacBook Pro. Once the system begins using the discrete GPU, which generates more heat because it's much more powerful, the fans necessarily come on to cool the thing.


It doesn't sound like he's a troll, that's just the way MacBook Pros have been designed.

Sep 6, 2020 10:20 AM in response to TimUzzanti

Hey everyone!


I'm deciding between MBPro 16 i7 base model with an upgrade of the memory to 1TB, versus getting the higher end i9 model for the 16" MBPro which comes with 1TB already.


I will mainly be using the computer for heavy chrome usage with many tabs, microsoft office, and adobe pdfs. Not using it for gaming, video editing or photo editing or anything like that. I definitely want the larger screen size that the 16" offers.


My question is that does the i9 run hotter than the i7 model? Since I'm not running super heavy stuff, I don't think I really need the full 8 core and power of the i9, but I don't want it to run hot on light tasks. But if it doesn't run hotter idle and still offers more power, I'm not opposed to it.


Is there any instance where getting an i7 16" would be better than i9 16"? I wonder if the i9 will make things faster if at all since it has more cores? I just want a fast laptop since I have the budget for it, but is there a thing where too fast (i9) can be slow if not using it for heavy workloads?

Sep 6, 2020 10:38 AM in response to vinamra07

The GPU takes too much of the power (with 5500). I recommend getting the 5600 and do a test with two monitors. Just let it run for a couple of hours when you surf and do some normal stuff. If you‘re not satisfied bring it back and get your money back. Check first if this is possible. In Switzerland for example it is possible within a certain time. Make no compromises for an expensive notebook you need to be really happy. Or bring it back.

Sep 6, 2020 10:41 AM in response to itunestux

Exactly. It takes up 18-20w all the time. But my question is whether the problem is only the noise it produces? Or the problem is that it might reduce the life span of your MacBook operating the graphics card at such power for 8 hours a day?

Are only the external factors like the noise and the wattage are the concern? So will the machine get effected in any way due to these things is my question.

Sep 6, 2020 10:48 AM in response to itunestux

I agree to all the points. Let's say I am using an external monitor with the base 16" model. The average rpm of both the fans is 3000 when performing normal tasks such as using Chrome and YouTube etc. It spikes up to 3500/4000 at intervals. This has been done continuously for 5 hours. (Always plugged in)

Now, noise is not a concern for me. My only concern is whether I am causing any harm to my macbook using it in that way and whether it will reduce the life span or not?

Sep 6, 2020 11:43 AM in response to vinamra07

The GPU and the MBP thermals are designed to draw up to 50w of power, so drawing 20w is less than half of what the GPU is rated for and what the thermal design of the machine must accommodate.


If you don't like the fan noise, that's fine, and it's also far from certain; for whatever reason when I use mine with an external monitor and the GPU is drawing 20w the fans never get above 2400 RPM, which is inaudible.


It shouldn't reduce the lifespan of your MBP as you are using it within its thermal design envelope.

MacBook 16-inch Fan Noise

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