increased internal temperatures with El Capitan

Question

increased internal temperatures with El Capitan

This evening, I noticed that my 21.5" iMac (EMC 2428) has been running hotter under OS-X 10.11 (El Capitan), than I have noted a week prior, when It was still running Yosemite.

Specifically, the internal temperature has been hovering around 49-50 degrees centigrade (120-122 degrees fahrenheit); this is at least 5 degrees warmer than I noted previously with Yosemite, or Snow Leopard.

Now whilst this for me is not a major issue, as I have HDD Fan Control installed on my machine, thereby increasing fan speed manually should I deem the necessity, it is nevertheless not what I would have expected from a software upgrade that, all-in-all, is a positive one.

Has anybody else here noted the same temperature issues as I have with El Capitan? If so, I would like to hear what your thoughts are on the matter, and whether or not Apple technicians are on the case already, as it were.

Cheers.

iMac, OS X El Capitan (10.11)

Posted on Oct 5, 2015 7:23 AM

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Answer 1

Rudegar

Level 10

170,658 points

Oct 5, 2015 8:15 AM in response to David from Leura

I use the istat pro widget and so far I have not been able to detect heat up in my mid 2011 iMac 21" with i7 cpu

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Answer 2

rkaufmann87

Level 10

140,418 points

Oct 5, 2015 8:17 AM in response to David from Leura

No problems with El Cap on my 2011 iMac.

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Answer 3

Oct 7, 2015 12:20 PM in response to David from Leura

I've noticed my MBP is running a little hotter with El Capitan also.

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Answer 4

Oct 12, 2015 11:22 AM in response to David from Leura

I've noticed similar with my MacBook Pro (early 2013) over the last couple weeks. Today I realised the cause (for me at least)...

The fans don't turn on anymore. I have installed temp monitoring apps and can see that the CPU proximity for example can get above 100 degrees and the fans just idle at 2000 rpm. The fans never seem to properly switch on any more...

Anyone else see the same?

(will also post in macbook pro forum - just wondered if it might help...)

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Answer 5

Oct 23, 2015 6:47 AM in response to Drammy1977

I've noticed similar with my MacBook Pro. Same issue. Would like this addressed.

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Answer 6

Oct 31, 2015 5:58 AM in response to David from Leura

Same here, El Capitan is causing the MacBook Pro to overheat especially when watching videos. Please address this, Apple.

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Answer 7

Nov 1, 2015 6:40 AM in response to BlackMam8a24

And what about the fans - have you noticed that the fans don't come on any more???

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Answer 8

Nov 5, 2015 3:18 AM in response to Drammy1977

Hi Drammy,

Fan still comes on, but is pretty loud.

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Answer 9

Nov 14, 2015 4:08 AM in response to David from Leura

I have a new Macbook Pro and the first month I have problems with the tempure, I reported that the technical support... and is ridiculus new computer with problems... my $3,500 dollars invest in the best computer on the world and incluye the record guiness of more HOT computer...

This week I promises I go to store to change this stupid laptop...

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Answer 10

SeaPapp

Level 7

26,486 points

Nov 14, 2015 4:58 AM in response to David from Leura

I'd recommend running Activity Monitor to see if there are processes running that may be generating extra heat Use Activity Monitor on your Mac - Apple Support

No problems with El Cap on my late 2009 iMac.

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