1 2 Previous Next 16 Replies Latest reply: Apr 23, 2008 9:08 PM by 7oby
7oby Level 1 Level 1 (0 points)
I haven't broken my MacBook yet, but I fear it may happen if I run Folding @ Home. I see in iStat Pro temps of 90-91 Celsius and that's way too high. My fan obviously kicks into high gear (6100RPM) but it doesn't go down. If I leave folding on for a few hours, apps start to get sluggish and the OS just acts funny.

I hear from all the experts that 91C is way too hot, and I know about the old paste debacle but that was supposedly fixed in the core 2 duos.

I'm not alone in these hot hot heats:
http://teammacosx.org/forum/cgi-bin/ikonboard.pl?act=ST&f=54&t=3117&st=0#entry47 101

MacBook 2.16ghz C2D, iBook G4 1.33ghz, Mac Mini 1.8ghz C2D, Mac OS X (10.5.2), two 8gb iPhones, a 20gb ipod 4g, a 20gb ipod 4g color
  • 1. Re: Is CPU overheating covered under warranty?
    deltatux Level 2 Level 2 (485 points)
    7oby wrote:
    I haven't broken my MacBook yet, but I fear it may happen if I run Folding @ Home. I see in iStat Pro temps of 90-91 Celsius and that's way too high. My fan obviously kicks into high gear (6100RPM) but it doesn't go down. If I leave folding on for a few hours, apps start to get sluggish and the OS just acts funny.

    I hear from all the experts that 91C is way too hot, and I know about the old paste debacle but that was supposedly fixed in the core 2 duos.

    I'm not alone in these hot hot heats:
    http://teammacosx.org/forum/cgi-bin/ikonboard.pl?act=ST&f=54&t=3117&st=0#entry47 101


    Usually the CPU's normal high temperatures are around 82 degrees C. Are you sure where you are putting your laptop is in a well ventilated place?

    Try running folding on desktops like your Mac Mini instead.
  • 2. Re: Is CPU overheating covered under warranty?
    7oby Level 1 Level 1 (0 points)
    The mac mini is being used by the girlfriend, and I'm sure she'd be furious if I abused her CPU like that.

    As well, it's not just well ventilated, it's on one of these:
    http://www.amazon.com/Targus-PA248U-Notebook-Chill-Pad/dp/B0000AKA8Y

    (and yes it's running, and the back of the notebook is properly lifted by the little nubs)

    Also, that thread I linked showing 89C temps? It's talking about a Mac Mini itself.

    Message was edited by: 7oby
  • 3. Re: Is CPU overheating covered under warranty?
    deltatux Level 2 Level 2 (485 points)
    7oby wrote:
    The mac mini is being used by the girlfriend, and I'm sure she'd be furious if I abused her CPU like that.

    As well, it's not just well ventilated, it's on one of these:
    http://www.amazon.com/Targus-PA248U-Notebook-Chill-Pad/dp/B0000AKA8Y

    (and yes it's running, and the back of the notebook is properly lifted by the little nubs)

    Also, that thread I linked showing 89C temps? It's talking about a Mac Mini itself.

    Message was edited by: 7oby


    Have you tried running the system without that pad? I don't know how effective that pad really is. I know from my experience with my Mac, it never peaked over 82 degrees ever.
  • 4. Re: Is CPU overheating covered under warranty?
    7oby Level 1 Level 1 (0 points)
    I've run it without the pad before, but I can't see what reducing the surface to air ratio will do to help with heat issues.
  • 5. Re: Is CPU overheating covered under warranty?
    deltatux Level 2 Level 2 (485 points)
    The more ventilated the area is, the less likely the temperature will spike on the system. For me, the regular idle temperature is 40C, if your machine is idling at more than 45C, you should make sure that nothing is blocking the vent.
  • 6. Re: Is CPU overheating covered under warranty?
    7oby Level 1 Level 1 (0 points)
    Tell me how removing the pad and putting it directly on the table will improve things.

    Right now it looks most like this:
    http://g-ecx.images-amazon.com/images/G/01/ciu/24/fb/3343f0cdd7a038ed4ebc7110.L. jpg
  • 7. Re: Is CPU overheating covered under warranty?
    deltatux Level 2 Level 2 (485 points)
    Sometimes these products MAY interfere with the cooling of the laptop. I do not have such a product to test it but I'm just asking if you take it off, did it see a difference. My Macbook is on a flat surface and the room is well ventilated and it idles at 40C and never peaks 82C when it's working on full load.
  • 8. Re: Is CPU overheating covered under warranty?
    Phonic Level 1 Level 1 (0 points)
    Back to the original question.

    I believe it is covered under the warranty. It is a design fault if it overheats without blocking the vents/modification.
  • 9. Re: Is CPU overheating covered under warranty?
    JoeyR Level 6 Level 6 (8,275 points)
    I'm not sure how you would address this as an overheat issue with Apple. Folding @ Home maxes out your CPU to 100% 24/7... meaning your CPU is working absolutely as hard as it can without ever having a chance to slow down. Your fan can do a bit to help cool your system under normal circumstances, but it's almost impossible for the MacBook fan to get the temp much lower than it is under that kind of load. Folding @ Home is really not a great application to be running on a notebook. As you mentioned about running FAH on your girlfriends Mini +*"I'm sure she'd be furious if I abused her CPU like that."*+ you already know it's an "abusive" application. I know the PC version lets you determine what percentage of the CPU power you want to let it use (I usually keep it at around 80%)... but I haven't found a way to do that on a Mac.
  • 10. Re: Is CPU overheating covered under warranty?
    deltatux Level 2 Level 2 (485 points)
    JoeyR wrote:
    I'm not sure how you would address this as an overheat issue with Apple. Folding @ Home maxes out your CPU to 100% 24/7... meaning your CPU is working absolutely as hard as it can without ever having a chance to slow down. Your fan can do a bit to help cool your system under normal circumstances, but it's almost impossible for the MacBook fan to get the temp much lower than it is under that kind of load. Folding @ Home is really not a great application to be running on a notebook. As you mentioned about running FAH on your girlfriends Mini +*"I'm sure she'd be furious if I abused her CPU like that."*+ you already know it's an "abusive" application. I know the PC version lets you determine what percentage of the CPU power you want to let it use (I usually keep it at around 80%)... but I haven't found a way to do that on a Mac.


    I guess the lesson is: if you don't feel like burning your laptop, don't use FAH, it won't kill you if you don't run the application (now if FAH worked with my ATi card I would run it on my desktop, but that's another story).
  • 11. Re: Is CPU overheating covered under warranty?
    7oby Level 1 Level 1 (0 points)
    I guess the lesson is, if you run World of Warcraft on your laptop and it breaks, you shouldn't have been running World of Warcraft. But since it's folding at home doing the exact same thing as world of warcraft this time, I shouldn't be trying to help cure diseases.

    The last time I ran WoW it hit 100% for a long time and the laptop actually shut itself down. That was before I had the cooler. I was thinking about taking it in for a checkup internally, but the guy kept saying oh i'd probably need the logic board replaced, which I didn't understand. I just wanted to make sure there wasn't dust in there.

    If I took the laptop to the Apple Store (it's an hour away which is why I ask first), got a genius bar appointment, do you think they'd open it up and try to clean it out? It's of course still in warranty and has applecare.
  • 12. Re: Is CPU overheating covered under warranty?
    deltatux Level 2 Level 2 (485 points)
    I hope that the Geniuses don't waste your time and actually fixed the problem. I have had a string of problems after my first repair from them and am not satisfied with their repairs. I'm going to get it fixed by my local Apple service provider to see if they will fix my keyboard issue once and for all.

    As for your laptop, it could just be dust or a motherboard (Apple calls these logic boards) mishap.
  • 13. Re: Is CPU overheating covered under warranty?
    Paddy Crawford Clarke Level 1 Level 1 (5 points)
    One time i was running a similar mac killing program and my CPU was up at 100 it shut itself down and the hard-drive was melted. luckily it was under warranty but i lost all my files, they couldn't evan recover them forensically.


    currently i am having a different problem with my fans or should i say fan.

    basically the cooling system on mac's laptops is RUBBISH
  • 14. Re: Is CPU overheating covered under warranty?
    deltatux Level 2 Level 2 (485 points)
    Paddy Crawford Clarke wrote:
    One time i was running a similar mac killing program and my CPU was up at 100 it shut itself down and the hard-drive was melted. luckily it was under warranty but i lost all my files, they couldn't evan recover them forensically.


    currently i am having a different problem with my fans or should i say fan.

    basically the cooling system on mac's laptops is RUBBISH


    Actually, I agree with that. Ever since the Intel upgrade, Apple hasn't realized that Intel has a bad record of releasing overheating CPUs that aren't optimal for laptop use. Back then on the G4s, heat was never an issue for consumers.
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