MacBook Pro 15 I9 2018 Fan Spinup

floridaman

macrumors member
Original poster
Nov 8, 2011
89
32
Florida
I just got the MacBook Pro 15 I9 2018 with 1TB HD and 32GB of ram. I have noticed that when you boot the machine or restart it the fans spin up to 3500RPM and the temp of at least one of the cores on processor spikes to 200 degrees or more. This lasts for a few seconds and then the fans gradually spin down to an average of 2075RPM. I have installed the supplemental update. Anyone else notice this behavior.
 

maflynn

Moderator
Staff member
May 3, 2009
66,775
33,718
Boston
I have noticed that when you boot the machine or restart it the fans spin up to 3500RPM and the temp of at least one of the cores on processor spikes to 200 degrees or more.
On bootup, my 2.2GHz MBP's temps spike and I see the temps quickly hit the 90c range. I think this is somewhat normal (though odd) behavior.
 

floridaman

macrumors member
Original poster
Nov 8, 2011
89
32
Florida
deleted
[doublepost=1535022053][/doublepost]
On bootup, my 2.2GHz MBP's temps spike and I see the temps quickly hit the 90c range. I think this is somewhat normal (though odd) behavior.
I agree that it is odd behavior and maybe Apple will address this issue. Do your fans kick into high speed as well?
 

maflynn

Moderator
Staff member
May 3, 2009
66,775
33,718
Boston
I agree that it is odd behavior and maybe Apple will address this issue. Do your fans kick into high speed as well?
Yes, my fans kick in when that happens. The OS is doing something that is spiking the CPU, I'm not confident that apple will address this as an issue. Its not causing any problems and the OS has other bugs that seem to impact users. I'm not making excuses but rather just pointing out that I think this is a low priority thing that apple probably won't do anything about
 

maflynn

Moderator
Staff member
May 3, 2009
66,775
33,718
Boston
I totally agree, seems that a lot of issues are a low priority for Apple. I miss Steve Jobs.
Steve wasn't perfect, by a long shot and under his leadership they have their share of laying eggs. Yet, I can't recall ever seeing the number of issues/questions/concerns on any apple product like what we're seeing here with the 2018 MBP. It only helps cement the mentality that this may be my last Mac I buy. My MBP is problem free (knocks on wood), and its a great laptop, but unlike my last MBP, there's just too much negative chatter, whether we're talking about T2 crashing or the coil whine.

I don't have any buyers remorse, my MBP is fantastic, but unlike my 2012 my confidence of it lasting a long time is not high.
 

floridaman

macrumors member
Original poster
Nov 8, 2011
89
32
Florida
All of these issues really come down to design and quality control. I think QC has gone out the window and the design team rushes the products to completion without using a methodical thought process. Just my opinion. I also think some of the issues reported on this forum are exaggerated as well.
 

floridaman

macrumors member
Original poster
Nov 8, 2011
89
32
Florida
Steve wasn't perfect, by a long shot and under his leadership they have their share of laying eggs. Yet, I can't recall ever seeing the number of issues/questions/concerns on any apple product like what we're seeing here with the 2018 MBP. It only helps cement the mentality that this may be my last Mac I buy. My MBP is problem free (knocks on wood), and its a great laptop, but unlike my last MBP, there's just too much negative chatter, whether we're talking about T2 crashing or the coil whine.

I don't have any buyers remorse, my MBP is fantastic, but unlike my 2012 my confidence of it lasting a long time is not high.
Well your thread is about the fan spin ups so that was confusing.

I meant to include your comments in from another post which would have made it less confusing. Sorry about that.
 

jerryk

macrumors 603
Nov 3, 2011
5,900
2,977
SF Bay Area
Lot of electronics will do this purposely to verify operation of the fan control system as part of the startup process.

The system is not really going to 100c. It is artificial setting of the temp sensor. This is done to verify that the sensor and subsequent cooling mechanisms (i.e. running the fans faster) is working. I have a NAS and router that do the same thing when started. In fact some Amazon shoppers have sent the router back because it does this for 20-30 seconds as part of its boot process. They claim the fans are really noisy and give it a 1 star rating based on 30 seconds of usage. Geez.
 

macfoofoo

macrumors newbie
Aug 24, 2018
2
0
I just got the MacBook Pro 15 I9 2018 with 1TB HD and 32GB of ram. I have noticed that when you boot the machine or restart it the fans spin up to 3500RPM and the temp of at least one of the cores on processor spikes to 200 degrees or more. This lasts for a few seconds and then the fans gradually spin down to an average of 2075RPM. I have installed the supplemental update. Anyone else notice this behavior.
Mine is doing the same as well. The fans are running high because any application you start, consumes excessive CPU. The exact same apps on my 2017 MBP did not do that. That patch they released did not fix the issue.
 

Bokeron

macrumors newbie
Oct 17, 2018
1
0
Hi all! I've spent a lot of time looking for discussions like this because I'm very disappointed with my new MBP i9. Despite the initial problem related to performance and once installed the patches that Apple published and the latest versions of Mac OS, my MBP i9 has, in my opinion, a clear problem related to the heat generated by the processors and fans running loudly several times during the day without a high CPU load.

It is very annoying to work with the noise of the fans for quite a few minutes, and this never happened before with my two previous MBPs. My typical day is working with Office, Safari and OneDrive, and with development tools occasionally. It is quite frustrating to see how the CPU load is minimal and the fans are running loudly for no reason, generating excessive heat.

I have taken the computer to the technical service, but I am afraid that they will not detect anything abnormal according to Apple. Does something similar happened to someone?

Greetings.
 

macfoofoo

macrumors newbie
Aug 24, 2018
2
0
Hi all! I've spent a lot of time looking for discussions like this because I'm very disappointed with my new MBP i9. Despite the initial problem related to performance and once installed the patches that Apple published and the latest versions of Mac OS, my MBP i9 has, in my opinion, a clear problem related to the heat generated by the processors and fans running loudly several times during the day without a high CPU load.

It is very annoying to work with the noise of the fans for quite a few minutes, and this never happened before with my two previous MBPs. My typical day is working with Office, Safari and OneDrive, and with development tools occasionally. It is quite frustrating to see how the CPU load is minimal and the fans are running loudly for no reason, generating excessive heat.

I have taken the computer to the technical service, but I am afraid that they will not detect anything abnormal according to Apple. Does something similar happened to someone?

Greetings.
I have the same frustration with mine.
 

fokmik

macrumors 601
Oct 28, 2016
4,541
4,016
USA
All of these issues really come down to design and quality control. I think QC has gone out the window and the design team rushes the products to completion without using a methodical thought process. Just my opinion. I also think some of the issues reported on this forum are exaggerated as well.
Sorry to say to you but QC is still there...it was just moved from Apple inside with people payed for QC check, to us, the customers...that we buy their product and also, for free do their QC
[doublepost=1539797329][/doublepost]
Hi all! I've spent a lot of time looking for discussions like this because I'm very disappointed with my new MBP i9. Despite the initial problem related to performance and once installed the patches that Apple published and the latest versions of Mac OS, my MBP i9 has, in my opinion, a clear problem related to the heat generated by the processors and fans running loudly several times during the day without a high CPU load.

It is very annoying to work with the noise of the fans for quite a few minutes, and this never happened before with my two previous MBPs. My typical day is working with Office, Safari and OneDrive, and with development tools occasionally. It is quite frustrating to see how the CPU load is minimal and the fans are running loudly for no reason, generating excessive heat.

I have taken the computer to the technical service, but I am afraid that they will not detect anything abnormal according to Apple. Does something similar happened to someone?

Greetings.
yes, i think the i9 shouldn't be in this MBP...or if Apple was legit, it should put a better cooling inside
 
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