Various computer hardware components give off heat and can cause overheating

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Set MacBook Pro on energy saving mode

I have a 2008 MacBook Pro (last one before the unibody ones) and have been monitoring a the laptop temperatures for almost a day. I used Temperature Monitor to graph the changes in temp and correlate ...
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395 views

Macbook Pro just started overheating and losing frame rate

It's strange because I've had Diablo III for a couple weeks now and I've been able to play it just fine without any performance problems. Starting today though, I've experienced some serious ...
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3answers
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MacBook Pro GPU Diode over 100 degrees Celsius hot?

I was playing Trine 2 yesterday and checked the inside temperatures with iStat Pro after playing. It showed the GPU Diode at being 107°C hot. Is that bad for the GPU Diode or other components inside ...
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1answer
1k views

Is it safe to work with MacBook Pro lid closed?

My MacBook Pro (8,3) often gets fairly hot (see current sensor readings here: http://pastebin.com/2rj7GGAJ) even when it isn't closed. I'm about to purchase a DualHead2Go (or a TripleHead2Go) so I can ...
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Is it okay to stack an Airport Extreme on top of a Mac mini?

Is it ok to place an AirPort Extreme base station on top of a Mac mini, or could this cause problems (like overheating or interference) with either device? As depicted, they do fit together pretty ...
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1answer
208 views

MacBook Air wrong fan reading

My Macbook Air (Summer 2011, i7) tends to think it's running way hotter than it is, and permanently ramps up the fan. Closing the computer and reopening resets the mistaken sensor, but I'd rather not ...
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8answers
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How significant is the new iPad's heat issue?

I've heard a fair bit about problems with the new iPad "overheating". However the details seem a bit shaky. Is the increase in heat noticeable? Is it only when playing games and watching videos, or ...
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6answers
29k views

How to debug iPhone overheating when the cause is clearly not the environment when the phone is used?

My iPhone 4s with iOS 5.1 started to present overheating very often: 2-4 times a day and this happened while the outside temperature is only around 18-20C and the phone was not under heavy use, in ...
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2answers
735 views

OSX able to throttle down CPU on heavy usage?

I have a company macbook with a 4 core 2,8Ghz i7 (to much power for a "laptop" if you ask me, whatever). Sadly the cooler seems not to be able to handle 100% cpu usage. Sometimes filevault stresses ...
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3answers
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How can I find what is making my Mac run hotter and causing the fans to run more often?

My Macbook Pro's fans are running louder. I've also noticed that the average internal temperature is significantly higher. (187°F as I write this.) This didn't used to happen unless I was running ...
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1answer
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How hot is it normal for a 45 watt MagSafe Adapter to get during use?

I have a Mid-2011 MacBook Air (13"). Recently, the 45 watt MagSafe Adapter grew extremely hot (painful to touch) and smelled slightly singed while I was using the machine and plugged into the wall. It ...
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2answers
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What's the normal operating temperature for a unibody plastic Macbook?

My Macbook seems to be running pretty hot lately. iStat Pro is stating that my CPU temp is nearing 180 degrees F, and that the heatsink is approaching 150. The laptop is noticeably warmer than ...
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1answer
606 views

What part of the MacBook Pro 13-inch 2.4 GHZ (Mid 2010) logic board is what sensor?

My MacBook Pro 13-inch 2.4 GHZ (Mid 2010) starts up normally but after approximately one minute the fan accelerates and the system slows down dramatically. The CPU load goes up to 99% as I see it on ...
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3answers
703 views

Macbook Pro random shutdown

Has anyone experienced this problem? Does anyone have a solution? I have scoured the internets for solutions and found many different answers. I am on a Macbook Pro 6,1. The one that has worked for me ...
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2answers
417 views

Is my USB drive broken, or is it my MacBook?

I have a Kingston DataTraveler 108, which is recognized by any computer I plug it into. When I try copying files to it on my MacBook, it is sometimes suddenly ejected. I've had the same problem ...
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3answers
2k views

iMac excessive GPU heat when using a second display

Without a monitor connected (via Thunderbolt/mDP) to my iMac (2011, 3.4 GHz, 6970M 2GB), iStat Menus reports the GPU is using ~15 watts, and has a temperature of 60c. With one connected, it uses ~35 ...
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2answers
627 views

Lion (10.7.2) — CPU heats to 90-degrees and Java apps crash — why?

MacBook Pro 15" quad-i7. Been running Lion since day one. Just started this week, Eclipse and Oracle SQL Developer crash unexpectedly, then a moment later the MacBook cooling fans kick in and the ...
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Air 11" i7 2011 fans come on, never turn off

I bought a new MBA 11" i7, it's about two weeks old. I've noticed that as soon as the fans come on, they Never turn off. If I watch a video, or do any slightly heavy lifting, the CPU hits 70C, the ...
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2answers
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Transporting from home to work (~10 min by car), should I just make my MacBook Pro sleep, or shut it completely down first?

I just got a new MacBook Pro, and is looking at how the power modes work, and according to this article: About Energy Saver sleep and idle modes in Mac OS X, making it sleep by closing the lid (say) ...
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2answers
862 views

iMac running too hot?

I noticed my mid-2011 Core i5 iMac felt a bit too hot on the back. So i checked my iStat dashboard widget, Here are the temperatures: HD: 52 degrees celsius CPU: 49 Ambient: 35 GPU Diode: 55 GPU ...
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Process “mtmfs” is using 98% of cpu, heating up the core and runing the fans flat out [duplicate]

Process "mtmfs" is using 98% of cpu, heating up the core and runing the fans flat out. I have quite the process through activity monitor, but does anyone know a longer term solution? I am running a ...
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4answers
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Macbook Pro (Early 2011) running hot with OS X Lion

I recently bought the baseline 13'' Macbook Pro with i5 CPU and Lion preinstalled. I mostly work with Firefox (without Flash), NetBeans IDE and iTerm running and the machine tends to get really hot ...
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iMac is warming

I've 22 inch iMac. I am using it about 1 year and just noticed that the top back of the screen is very hot as i can't put my hand about half a minute on it. I've googled some and downloaded istat ...
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2answers
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How can I disable visual effects in Lion?

I've just installed Lion on my 24" iMac from 2006 and do have again problems with screen-freezes due to overheating. This is a known issue with the 2006 iMacs since OSX late 10.5 / 10.6. While for ...
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How to keep your MacBook Pro cool (unibody)

I'm a developer/system admin/unix guy so I have many IDEs/Editors/Terminals running and I'm also temperature freak... I like it cold, here are a few tips I did to keep my MacBook Pro Unibody under 46 ...
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2answers
330 views

SSD instead of DVD temperature

just installed Intel 320 instead of DVD in Macbook MC516LL. Does old DVD place is equivalent to standard HDD place in Macbook from temperature (thermal) perspective?
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1answer
436 views

MacBook Pro Heat Indicators

I just downloaded a temperature monitor app for my macbook pro. It tells me the following temperatures. I was wondering which ones I should take extra note of and what temperatures of those I should ...
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5answers
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Horizontal or Vertical stand for cooling a Macbook?

I have a Macbook Pro (2010 model) that I like to connect an external monitor, keyboard, and mouse too. I like to keep the lid down, and have it running almost all the time, 24/7. There are several ...
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3answers
3k views

Way to limit CPU speed to prevent temperature spikes?

I have a 17 inch MacBook Pro with Thunderbolt. Occasionally, it heats up and the fan has to kick on. This happens typically during heavy CPU utilization, but also seemingly randomly when doing ...
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3answers
143 views

MBP Dual core (2006) fans usage since Mac OS X update 10.6.7

Am I the only one who noticed this : since the last Mac OS X System update, the fans are quite often spinning at full speed, regardless of the activity on the computer. It happens even when there is ...
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When do the Macbook Pro fans turn on?

As a complement to this question about keeping the Mac cool so the fans don't get triggered: At what temperature does the mac turn on the fans? I know that a high CPU load can cause the fans to go ...
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641 views

How well will a MacBook Air work in a hot dusty environment

A MacBook air would work very well for me functionally. However I expect that I may have to use it in a hot and dusty environment. Any idea how badly the cooling system would be affected by prolonged ...
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3answers
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Cold temperatures cause finger resistance on iPad screen

I have an issue that I've been experiencing: semi-cold fingers, iPad, and/or room make for a very stubborn drawing experience (I'm an artist that uses the iPad). I'm talking indoors, and it doesn't ...