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  1. #1


    Member Since
    Feb 02, 2008
    Posts
    115
    Macbook Pro: Why So Hot???
    hi all...

    i'm just wondering why my MBP gets so hot on the bottom after an hour of being powered on?

    is this normal?

    are there things i can be doing to prevent this or that i should be watching out for?

  2. #2

    tdll1313's Avatar
    Member Since
    Sep 14, 2008
    Location
    Mesa, az
    Posts
    120
    Specs:
    27 inch iMac i5 2.66 quad core processor. iPhone 4 32 gig, ATV2. MPB 17' quadcore
    Hey I have a macbook pro and comparatively to other machines that I used it does not get hot at all. I can very comfortably leave it on my lap when I use it. I know this isn't much help but at least you have another perspective.

  3. #3

    CrimsonRequiem's Avatar
    Member Since
    Jul 24, 2008
    Posts
    6,004
    Specs:
    MBP 2.3 Ghz 4GB RAM 860 GB SSD, iMac 3.4 GHz Intel Core i7 32GB RAM, Fusion Drive 1TB
    It kind of depends on what you are doing with your MBP. If you are just listening to music and surfing the web it shouldn't get that hot.

    However if you are playing a game or doing something CPU intensive then yeah it will get hot pretty fast.

  4. #4

    THeBadMonkey's Avatar
    Member Since
    Sep 22, 2008
    Location
    Leeds
    Posts
    108
    Specs:
    Black Macbook: 2.4 ghz dual core 4gb Ram 250gb Hdd
    One guy's switcher blog I read is David Allison and he seemed to have a similar problem. If you click on the link it will take you to a post where he talks about an app called fan control - hope this helps.

  5. #5

    NPuter's Avatar
    Member Since
    Jul 15, 2007
    Location
    Miami, Fl
    Posts
    989
    Specs:
    15" 2.2GHz Santa Rosa Macbook Pro - 4GB Ram - 120GB HD OS X Leopard - Windows XP
    Instead of using fan control, I would recommend smcFanControl... It has a nice menubar interface, and is safer to use than other programs.

    "The forums are not only a place to have questions answered, they are a place to be part of a community..."

  6. #6


    Member Since
    Feb 02, 2008
    Posts
    115
    thanks guys!

    i don't know much about the standard fan speeds of a MBP.

    if i'm going to install something like smcFanControl, is there a guide i can reference where i can be sure i won't put the wrong settings on each fan which could result in damage?

  7. #7

    mdfuller's Avatar
    Member Since
    Nov 01, 2007
    Location
    Sconie
    Posts
    1,217
    Specs:
    15-inch MacBook Pro
    I agree - smcFanControl is the bomb. I run the fans anywhere from 2000-4000 RPM's. I have found 2500 to be perfect for 90%+ of the time. Pretty hard to hurt anything with the program. I am sure some people will claim the fans could wear out faster, but better having worn out fans than having your private parts on fire.

  8. #8

    skaheadpunk's Avatar
    Member Since
    Jan 12, 2008
    Location
    Leicester, England
    Posts
    1,760
    Specs:
    MacBook, iPod Classic, 8GB 3G iPhone, Time Capsule
    Cos it's metal - and also hence the 'notebook' not 'laptop thing' - if you intend to use it on your lap I recommend wearing trousers at all times!

  9. #9


    Member Since
    Feb 02, 2008
    Posts
    7
    Or put your sleeve under the notebook. That's what I'm doing right now (with a macbook, but you get the point).

  10. #10


    Member Since
    Jun 02, 2008
    Location
    Texarkana, TX
    Posts
    65
    Specs:
    2.4 GHz MacBook Pro SR
    They get hot.......doing nothing other than looking at this forum in safari the enclosure base is 99F CPU is 140F and the GUP Diode is 157F. Pretty toasty......that is how Apple designed it.

  11. #11

    Alexis's Avatar
    Member Since
    Apr 20, 2006
    Posts
    2,255
    Specs:
    Al iMac 20" 2.4Ghz Intel Core 2 Duo
    All laptops now run very hot.

    That's why they're called notebooks nowadays - they will fry your lap!

  12. #12


    Member Since
    Mar 21, 2008
    Posts
    29
    Specs:
    15.4" MBP, 2.4ghz Penryn, OSX 10.5.6, 200gb HDD, 4gb ram; 32gb iPod Touch
    What's the ideal temperature that the MBP should operate at? And what are the temperature limits that we should be aware of? Thanks.

  13. #13

    Alexis's Avatar
    Member Since
    Apr 20, 2006
    Posts
    2,255
    Specs:
    Al iMac 20" 2.4Ghz Intel Core 2 Duo
    There's nothing to be 'aware of' to be honest. It's ideal temperature is the one it's running at.

    If anything were to ever go wrong, you'd experience freezes or shutdowns.

  14. #14

    theonegod's Avatar
    Member Since
    Nov 02, 2006
    Posts
    476
    Specs:
    24" 2.8ghz IMAC, MB Pro
    Yes, the temp of your laptop is not for you to worry about. It runs no hotter then it should. Get a platform to use it on or a cooling device. They are cheap.

  15. #15


    Member Since
    Jun 17, 2008
    Posts
    2
    I was having the same problem not too long ago, my Macpro was just too hot SmcFanControl works great but it does affect battery life. It just kept bothering me that I needed a utility to keep it from getting hot. I was also having problems with battery life even without SmcFanControl running so in my searches i read about Run Away Applications shortening battery life Runaway applications can shorten battery runtime this solution fixed my battery life and the temperature of the laptop. Hope it helps

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