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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 12, 2020 12:25 AM in response to Dogcow-Moof

These kind of reply drive me really crazy.


My machine costs more than 3800€. Just for being connected to an external monitor, without doing absolutely anything else it drains the battery from 100% to 70% while being in charge.


Okay, let says that terrible fan noise and a shell hot as the bell are not a defect but could you please try to find a word that describe such huge issue? Would you call it a feature?


Maybe you like a laptop that is not able to being charged if connected to a second monitor. But that’s not normal and it’s a defect big like that.

Sep 12, 2020 12:37 AM in response to RICHD101

Quote:


is the 2019 mbp 15.6” i9 2.4 Noticeably quieter ? While attached to an external monitor while keeping mbp 15.6” display open?


Absolutely it is.

I bought a more powerful 2019 model (for 40€ more) and it has absolutely no problem while connected to an external monitor. Not getting hot, no fan noise and above all no battery drained.


I requested and obtained a refund for the 2020 16’’. They know that’s a defect.

Sep 12, 2020 10:16 PM in response to Dogcow-Moof

Yes. Of course I contacted them. I did more than 10 calls. And they finally decided to refund me because this defect that you call feature. And that’s absolutely related to being connected to the external monitor. No other apps open. RAM usage at 5% and CPU at 2%. Above all the Mac was new. Nothing installed on it at all. Also, please read the post before reply. This issue about the battery was reported thousands of time in relation to overheating and fan noise. Of course. It’s using a unbelievable amount of energy.


Dude, as others already said, if you are happy with your machine that’s perfectly fine.


[Edited by Moderator]

Sep 12, 2020 7:59 AM in response to LucaPipolo

Thanks Lucapipolo,


I pray there may be a recall on the 16” but if not .the 15.6” might be a great alternative to the 16” nightmare it’s so bad I’ll take the downgrade and sell the 16” for a loss .


I want to be able to enjoy having an open display on the mbp while connected to an external without the ridiculous jet engine noise and heat !


thanks again!


thank you Lucapipolo!



Sep 12, 2020 8:39 AM in response to RICHD101

Could anyone help answer this?

Would an i9 model be faster/less hotter than the i7 for the 16" given my use? I will be using for heavy google chrome (20-30 tabs at once), word, powerpoint, PDF reader, and some video playing all at once. I am not sure if I should go for the i9, or if the slightly higher clock speed for i7 would be good? I know both will get hot, but I want to know which one will get hot but still be fast.


It's only a $200 difference in my case to get i9 vs i7, since I will be upgrading the memory on base i7 to 1TB either way. Please help.

Sep 12, 2020 10:13 AM in response to Rajp98

Rajp98 wrote:

Could anyone help answer this?
Would an i9 model be faster/less hotter than the i7 for the 16" given my use? I will be using for heavy google chrome (20-30 tabs at once), word, powerpoint, PDF reader, and some video playing all at once. I am not sure if I should go for the i9, or if the slightly higher clock speed for i7 would be good? I know both will get hot, but I want to know which one will get hot but still be fast.

It's only a $200 difference in my case to get i9 vs i7, since I will be upgrading the memory on base i7 to 1TB either way. Please help.


Probably not much difference between the i7 and i9 (I have an i9 and wish I would've just saved the $$$ and gotten an i7). These 16" MBPs get throttled like crazy due to the heat in heavy use

Sep 12, 2020 4:24 PM in response to KUKURUZNIG

KUKURUZNIG wrote:

I agree. But our "muscle car" has a low-power integrated GPU. Why can't I use it with an external display? I don't want to run "8L V10" for most cases where "1.2L 4 cylinder engine" is enough. Especially in IDLE.

When you connect an external display, like EVERY model MacBook Pro with Dual-Graphics, the Discrete GPU is activated and used for ALL displays. There is no path from the discrete GPU to any port that can connect an external display in these "dual graphics" 15/16 -in MacBooks.


The 13-in models use the Integrated graphics because they designed that way -- they have no Discrete GPU. And if that is all the performance you needed, you bought WAY more computer than you needed to.


If you are seeing the Discrete GPU activated when you have NOT connected an external display, then likely one of your Apps (Chrome is the worst offender of "ordinary" Apps) has demanded the Discrete GPU be used.

Sep 12, 2020 7:32 PM in response to LucaPipolo

LucaPipolo wrote:

is the 2019 mbp 15.6” i9 2.4 Noticeably quieter ? While attached to an external monitor while keeping mbp 15.6” display open?

No. I own both currently and under the same screens the 2019 runs hotter and is quite a bit slower in my tasks in FCPx, Affinity software, and Adobe software. The heat, on my 2020 16" is much better managed.

Sep 12, 2020 9:41 PM in response to iTech23

iTech23 wrote:

I had the 15-inch with the i9 and the Pro Vega 20 and I never had an issue with the fans going crazy like it happens with the 16-inch.
and before that machine I also had the MacBook Pro 15-inch 2018 and no issues either .


Yes, and my Macintosh II didn't have fan noise either.


The point is, you're comparing machines with much lower CPU and GPU performance with the top of the laptop form factor performance line.

Sep 12, 2020 9:55 PM in response to iTech23

iTech23 wrote:

But with that reasoning, the Radeon 5600 that is more powerful than the 5500 should run hotter and is not the case.


The 5600 uses a completely different technology to interact with its VRAM (it uses HBM2 rather than GDDR6) and you cannot directly compare the two.


In particular, HBM2 was designed to be faster and more energy efficient.


You can see the difference in memory speeds alone; due to its more efficient architecture, the 5600M can refresh its VRAM at a speed of 1.2 Gbps vs the 12 Gbps the 5500M must keep up (higher memory speeds typically generate more heat.)


If something with the performance of the 5600M used GDDR6 there would likely be even more heat generated.


Note the 5500M and 5600M have the same rated TGP, 50w, so in any case 20w is less than half of what either GPU can draw.

Sep 12, 2020 9:58 PM in response to RICHD101

RICHD101 wrote:

I want to be able to enjoy having an open display on the mbp while connected to an external without the ridiculous jet engine noise and heat !


If you can source a USB-C to MDP adapter and a Dell U2717 or 30" Apple Cinema Display (the only two I've tried) you can have your MBP16 sitting open with full screen video running on the Dell and never have your fans exceed 2400 RPM.

MacBook 16-inch Fan Noise

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