Using Apple products in wet, dry, hot, low- or high-pressure environments. Things like water-resistance, waterproof specifications, dust and other environmental considerations.

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Disable single heat sensor?

I have a Macbook Air 15". A few days ago, it started running extremely slowly, with the fan at max RPM. I opened Activity Monitor and discovered that I had kernel_task running at about 400% CPU, ...
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1answer
55 views

Macbook battery information (cold weather & plugged in usage)

I kinda have two questions but they're both battery related so I just made one post. 1) Does it harm the battery if I cary my MacBook around with me and the weather is really cold? This has been a ...
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18 views

Diagnosing cooling issues on MacBook Air

I suspect the fan on my 2011 MacBook Air is not cooling efficiently, as it runs over 5000 RPM when I'm browsing the web and the CPU is around 75% idle. Is there any published benchmark for what the ...
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1answer
40 views

MacBook Pro 13" 2015 CPU and GPU temperatures

I've noticed that my new MacBook Pro 13" 2015 (MF839) is getting hot while playing browser games or watching models at sketchfab.com. Both CPU and GPU temperatures rise to 100-105 degrees (Celsius) ...
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11 views

epoxy to reconnect cpu fan on Macbook Pro late 2008? [duplicate]

I'm working on a friend's MacbookPro5,1 15" from late 2008, which was overheating, so I knew from past experience, the thermal paste needed to be removed, and reappplied. This was all achieved ...
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3answers
38 views

MacBook Pro (late 2008) new thermal paste applied, now how do I re-attach the cable for the cpu fans?

I'm working on a friend's MacbookPro5,1 15" from late 2008, which was overheating, so I knew from past experience, the thermal paste needed to be removed, and reappplied. This was all achieved ...
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1answer
86 views

High CPU and energy usage in Safari

Energy impact of Safari is extremely high on my Macbook Air Mid 2013 El Captian 10.11.2. It lead to high usage of CPU (Temperature ~65.0°C) and the CPU fan is running in full speed (6500.0 RPM) ...
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1answer
43 views

Windows vs OS X temperature, Windows runs hotter

I could see about 10 degrees celsius less when idle in OS X, compared to Windows 8.1, that's ~49 °C compared to ~38 °C. I've seen that, according to Macs fan control, the fan is shut down in idle, but ...
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1answer
52 views

MacBook Pro overheating after being repaired

I've recently had my MacBook Pro 15" model late 2011 repaired, it was a graphics card problem, they changed it and now it's working. The problem that I've encountered now is that it is overheating a ...
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1answer
50 views

Fans always on in Boot Camp

I have a 2015 Retina Macbook Pro 13″ running Boot Camp Windows 8.1. On default settings, the fan seems to idle at 0 according to "Macs Fan Control", and then slowly climb when it reaches 70℃ or so. ...
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1answer
219 views

Upgraded iMac 5k restarts randomly

I have a very frustrating problem and I need your guys help to fix it. I bought an imac 5k that I upgraded it's CPU, HDD, RAM. This is my second one i have upgraded and the second one that keeps ...
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1answer
76 views

Can this model of MacBook Pro satisfy my scientific needs?

I've recently decided to buy a 13-inch MacBook Pro. Although this costs me a lot, first-time experiencing this machine could be very interesting for me. Its weight is the other reason that attracts ...
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1answer
62 views

Fixing Mac Mini that uses 10x normal power in sleep mode

When I return to my Mac Mini in the morning, the case is warm to the touch, even though at that point it's been sleeping for hours with the display off. According to ...
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2answers
604 views

Macbook Pro Fan fullspeed, no temperature and keyboard backlight

Ive got a Macbook Pro 2008 15" 4,1 with OS X Yosemite 10.10.5 and latest Firmware and both fans run the whole time at fullspeed. My research brings up, that its probably the temperature Sensor, ...
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1answer
102 views

Is lowering my ODD fan speed dangerous after installing and SSD?

I've just installed a new SSD in my mid 2010 27" iMac. I put it in place of the disk drive (ODD) so now there is no optical disc drive in my computer. After I did the installation I noticed that the ...
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0answers
12 views

Are CPU temperatures over 110 something to worry about? [duplicate]

I am primarily a Java developer and love using OS X and Mac as my primary development environment. However recently I have been having temperature and heat concerns. I have a piece of code that ...
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1answer
58 views

MacBookPro temperature inconsistency

I have a 15" MacbookPro with a Windows 7 Bootcamp partition. I check the temperature when using Windows but I think it doesn't report the right temperature. I shut down Windows with a temperature ...
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0answers
114 views

iMac used for Target Display Mode runs really hot

I have a 2014 15" retina MBP that I've hooked up to my old 2009 27" iMac using it iMac as a monitor via Target Display Mode while the MBP is in clamshell mode. My problem is that the iMac turns ...
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2answers
146 views

Is my Mac Mini's fan okay?

I replaced the HDD with a hybrid HDD/SSD about a week ago, following iFixit's guide for doing so. However, when putting it back together, I stripped one of the connectors on the fan. My Mini gets ...
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0answers
11 views

MacBook Prop kernel_task uses excessive CPU when the environment is hot [duplicate]

From other posts it looks like having the kernel_task using a lot of CPU is a common issue. However what happens in my case is that the kernel_task starts using a lot of CPU (up to 2000%) only when ...
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1answer
735 views

How to preserve MacbookPro battery from degradation? [duplicate]

Platform: OS X: Yosemite 10.10.4; MacbookPro 15" Retina (mid-2015). Fact: There is aging for battery in any case - using or not. But while using - there is difference of how to use. My questions - in ...
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1answer
314 views

MacBook Air at 5700 RPM fan speed during summer?

it is unusually hot today (37 Celsius, about 100 Fahrenheit) and my MBA mid 13 fan is going crazy. The CPU temp is at 47.5 when almost idle but my fan blows with 5703 RPM (pretty much the maximum). ...
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0answers
1k views

MacBook Pro fan running with no CPU load and computer is COLD

Under normal circumstances (not installed new programs recently; had the usual programs running) I found my MacBook Pro 13" (Early 2015) with the fans running at average speed. I always have the ...
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2answers
6k views

How does the Apple Watch get the temperature?

The Apple Watch shows the temperature on the clock face. When my Apple Watch is disconnected from my iPhone, the temperature display becomes disabled, but the time still shows. That leads me to ...
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0answers
59 views

iPad 2 Air Screen Not Responding

I received an iPad 2 Air about two months ago as a birthday present. Yesterday I was sitting in class and I turned it on to use it, but for some reason it said it was too hot. After the temperature ...
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1answer
84 views

4SNS TCBC - Which Mac Pro sensor is that?

Briefly my Mac Pro (4,1 Early 2009 ) stopped booting which I eventually traced to the plastic clip holding the north bridge down failing. Seems to be a common issue. Replaced the clips and now it ...
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1answer
72 views

Fan for MacBook Air?

Macbook Air gets hot near its processor and gets sluggish for a while, whenever I make "heavy" tasks at the same time. I wonder if a fan under its base would make any difference since mac has no ...
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2answers
426 views

Which runs hotter, MacBook Pro or MacBook Air?

I currently use a 13" Mid 2011 MacBook Air, and the thing I dislike most about it is that it can get very hot. I'm particularly physically sensitive to the heat for some reason, and at its hottest it ...
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0answers
248 views

Why does my Macbook Pro get very hot at seemingly random times? Possibly Safari-related?

I have a late-2014 15" MBP with max specs running 10.10.3, and it usually has no problem handling most of what I throw at it (running multiple resource-intensive apps at once, editing large files in ...
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2answers
127 views

Does CPU heating to 90 C cause any permanent damage?

I have a MacBook Air 6,2 (2013) with an i7 (1.7 GHz normally). When I was installing Debian on it I completely forgot about the "Turbo Boost" feature — my CPU was clocked at its highest possible ...
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0answers
170 views

New MacbookPro 13 Retina MID2014, temperature issues

Bought this Mac two weeks ago, and I used to have a MacbookAir. I believe in my MacbookAir the battery temperature usually stayed around 30 Celsius while using it, even heavily. With my new Macbook ...
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1answer
793 views

Fan speed increased after upgrading to SSD

I just replaced my Macbook Pro's Mid 2012 HDD with a Samsung 850 EVO SSD. The performance is great and I am very happy, but I noticed that the fan seems to run faster. It is not a drastic change, but ...
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1answer
255 views

Macbook Pro 2012 md101 gpu throttling

When playing games on Macbook Pro 13 inch 2012 md101 under Windows 8.1 the temperature rises to 100 degrees pretty fast and gpu starts throttling giving a huge slowdown in games. Is this a normal ...
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1answer
119 views

MacBook Pro Fan Always Onish

For the past few months I've been doing quite a bunch of heavy load things on my Mac. So I wouldn't worry about the Fans running at full speed. Recently I've started to do more casual things. I've ...
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1answer
247 views

How to determine whether the thermal paste needs re-application?

How can I determine whether the heat sink is no longer firmly heat-tied to the CPU? This appears to be the case for a seven year old MacBook, but I'd like to confirm without going to the trouble of ...
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1answer
242 views

How do I know my mac turns off because of overheating?

My Macbook Pro (Yosemite) early 2011 sometimes unexpectedly turns off when running heavy tasks on battery power. Is there a way to confirm this is because of overheating? Here's a part of ...
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0answers
461 views

Does MagSafe 2 T Connector get really hot when charging?

I've a Macbook Pro Retina 15" Late 2013. My MagSafe 2 connector (T connector) gets really hot when charging. Is it normal ??
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1answer
117 views

can utilising the cpu fully (400% for dual-core hyper-threading cpu) damage mbp

I have recently bought a rMBP with i7 4578U intel 4th generation cpu. iStat usually shows cpu temperature readings of ~50 degrees which is normal. Today, because of a buggy library code, my cpu had ...
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1answer
225 views

Why can't my MacBook Air (Late 2010) stay cool?

I have a MacBook Air bought in early 2011. Lately it just can't seem to stay cool. With normal load, the CPU hovers between 80ºC and 100ºC, and if I use iStat / Fan Control to turn the fans up to ...
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1answer
768 views

What Causes rMBP Fan Noise When Connected to Two External Monitors

Connecting two external monitors to my Retina Macbook Pro 2012 has no problem except for more fan noise, which is a little bit annoying since with one external monitor one doesn't hear the noise at ...
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1answer
149 views

Spotlight/Search Not Indexing, MBP Running Too Hot

Short version: Since installing Yosemite on my (mid'12) MacBook Pro, I have seen issues with battery life cut in half and the computer running excessively hot. Symptoms: In the Activity Monitor, ...
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4answers
4k views

Retina MacBook Pro running very hot?

I have a late-2013 Retina MacBook Pro, and it gets really hot really easily. I've monitored the temp with htop and iStat and they both show the same readings. It's supposed to be able to play some ...
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1answer
138 views

My iPhone says it's overheating

MY iPhone says it's overheating, but I have felt the back of it and it feels fairly cool. A week ago, I did however drop it in the toilet. I did leave it in rice in the hot press for a day and a bit. ...
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2answers
8k views

What is a normal cpu temperature for a MacBook Pro (13-inch, Late 2011)?

Problem with temperature on this mac: MacBook Pro (13-inch, Late 2011)MacBook Pro (13-inch, Late 2011) 2.4 GHz Intel Core i5 16 GB 1333 MHz DDR3 Intel HD Graphics 3000 512 MB Now I have temperature ...
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4answers
4k views

Blank temperature in iOS 8 Weather app (showing just underscores)

Since upgrading to iOS 8 on iPhone, the Weather app will occasionally show a "blank" temperature (using an underscore: _ for each empty digit, so two underscores: __). The blank temperature also ...
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0answers
87 views

MBPr 13" - still warm and out in the cold

I have been using my Macbook Pro Retina 13" (late 2012 model) for a few hours, shut it down, put it in my laptop bag and went outside. It was pretty cold, I could see my exhaled breath condense; I ...
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2k views

High CPU temperatue on Macbook Pro Retina Mid 2014

I've recently bought myself a Macbook Pro 13" Retina Mid 2014 model. I went for the cheapest model but upgraded the CPU from 2.6Ghz to 2.8GHz. The specs are: 2.8GHz Dual-core Intel Core i5, Turbo ...
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3answers
5k views

Is there a 3rd-party app that uses iPhone 6's barometer?

I have an iPhone 6 and was wondering if there is any app that will simply display the current pressure using the barometer built into the phone? Or an app, other then the built in HealthKit which ...
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1answer
674 views

Macbook retina 2012: CPU temperature too high

I'm using Macbook Pro Retina Mid 2012 with CPU core i7 2.7 Ghz. I see that my computer is too hot as I think for a mac. The keyboard is hot,too. I'm using iStat software to get detail of my mac. Here ...
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1answer
3k views

Macbook Pro Retina Mid 2014 Heat and fan confusion

I bought a mid-2014 15inch retina macbook pro last week. I didn't have much time to work with it as my main machine, but today I had more free time so I did and noticed that after a few hours of work ...