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MacBook temps starting to freak me out.....

maclover001

maclover001

macrumors 6502a
Original poster
Mar 25, 2008
895
0
Vancouver, Canada
For some reason, ever since I decided that I wanted to sell my white MacBook and buy a unibody, the temperatures have been insane, hovering around 87 to 97°C, with the fans screaming, even if there is nothing open. Is this normal?

I opened up Activity Monitor, and "mount_hfs" and "kernel_task" are the two highest processes. What are these for?

Thanks
 

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I'd reinstall OS X because it sounds like there's a major problem with the operating system itself. Take it back to Apple if the purchase is fairly recent.

Don't mess with either of those processes. Shy of 100° C is normal until the fans kick in.
 
Ya that's definitely not normal. For regular web-surfing stuff I usually see between 45-55 degrees.

Take it back to Apple if you can.

By the way, how much processing power were those two processes taking up?
 
Eidorian said:
I'd reinstall OS X because it sounds like there's a major problem with the operating system itself. Take it back to Apple if the purchase is fairly recent.
Click to expand...

+1. A re-install is generally a good thing to do before you sell, problems or no. And since this is likely a software issue, and not hardware, that should fix your problem.

Eidorian said:
Don't mess with either of those processes. Shy of 100° C is normal until the fans kick in.
Click to expand...

If you are getting that close to 100º without doing any sort of MASSIVE load, you are having a problem.

If what I have heard is correct, at 100º (a.k.a 212º F) the computer will do a core shutdown to keep itself safe. Remember folks, those temperatures are when water boils, certainly not a safe temperature to have CPU's at with most Macs' cooling systems...
 
illegallydead said:
If you are getting that close to 100º without doing any sort of MASSIVE load, you are having a problem.

If what I have heard is correct, at 100º (a.k.a 212º F) the computer will do a core shutdown to keep itself safe. Remember folks, those temperatures are when water boils, certainly not a safe temperature to have CPU's at with most Macs' cooling systems...
Click to expand...
I've heard 110º C for mobile components and a few GPUs. Yes, there are runaway processes in this case though. :p
 
right now laying in bed just browsing the web I'm at 41C

there is something wrong.
 
Name101 said:
right now laying in bed just browsing the web I'm at 41C

there is something wrong.
Click to expand...

Mine (Early '07 MB) averages 61ºC... There are plenty of threads discussing average temperatures, but one way or another, < 75º under light load means nothing to be super worried about.
 
illegallydead said:
Mine (Early '07 MB) averages 61ºC... There are plenty of threads discussing average temperatures, but one way or another, < 75º under light load means nothing to be super worried about.
Click to expand...

I agree that <75C there is nothing to be worried about.. when i go on Youtube it sits around 65-70C.. but for a computer to be sitting at 93C. doing nothing. I think there is something Wrong..
When I'm doing Rendering on Blender Using 100% of each core My computer never goes higher than 80C..
 
maclover001 said:
For some reason, ever since I decided that I wanted to sell my white MacBook and buy a unibody, the temperatures have been insane, hovering around 87 to 97°C, with the fans screaming, even if there is nothing open. Is this normal?

I opened up Activity Monitor, and "mount_hfs" and "kernel_task" are the two highest processes. What are these for?

Thanks
Click to expand...

Sorry for double post!!
but I know what it is...
Your Icon is showing TIME MACHINE is running a back up..
That explains it.


as you can see mine is not running... It is also telling me I need to do a back up.
 

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thread jack, but nice to know 70C is still fine, I get nervous when my CPU temps reach 70 so I use SMC fan to full blast lol, like when playing Guild Wars via Crossover or whatever..
 
aznguyen316 said:
thread jack, but nice to know 70C is still fine, I get nervous when my CPU temps reach 70 so I use SMC fan to full blast lol, like when playing Guild Wars via Crossover or whatever..
Click to expand...

You don't really NEED to do that. It certainly doesn't hurt, but Apple did put plenty of circuitry to control the fans in there to prevent the CPU from becoming too dangerously hot. Unless there is something horribly wrong with your hardware, you shouldn't have to worry about it EVER getting above ~90ºC, as that is getting to dangerous levels...
 
I am most definitely new to Mac's, but on your top bar, how do you have your temp displayed?
 
I've heard 110º C for mobile components and a few GPUs. Yes, there are runaway processes in this case though.
Click to expand...

The maximum operating temp for the C2D chips is 105º C according to Intel. For the Core Duos it's 100º C. I *think* that the board will halt the CPU if it hits 5º C below the max, but I'm not sure about that.
 
I've noticed that the fan's in the aluminum macbook don't spin up really till about 90C... then hold the temp around 80C (under full stress testing in windows)
 
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