i7 MBP 15" almost hitting 100c...

Discussion in 'MacBook Pro' started by kingping14, Apr 30, 2012.

  1. kingping14 macrumors member

    Apr 10, 2010
    so when I game on my 15" MBP (late 2011), all four cores go as high as 95-97c, after about 30mins of gaming I can feel the bottom side of my desk heating up (yes this is the BOTTOM side of desk facing the floor).

    Is this normal? I dont see how my MBP can last for years to come constantly flirting with sub 100c temps all day long...
  2. GGJstudios macrumors Westmere


    May 16, 2008
    Your Mac is not overheating. The Intel processors used in Macs are designed to automatically shut down to prevent damage if they truly overheat. CPU Tjmax = 105C, GPU Tjmax = 100C on i3, i5, i7 processors. (Source: Intel) If you're not already using it, iStat Pro will give you accurate readings of your temps and fan speeds, among other things.

    Unless there is a rare defect in a Mac, most temps are well within the normal operating range, considering the workload being put on it. Websites with Flash content, games and other multimedia apps will put higher demand on the CPU/GPU, generating more heat. This is normal. If you're constantly putting high demands on your system, such as gaming or other multimedia tasks, expect temps to rise and fans to spin up accordingly. It's just your Mac doing its job to maintain temps within the normal range.

    It is also quite normal for your Mac to become extremely hot to the touch during intensive operations. The aluminum body transfers heat more effectively than other materials used in computer casings, so you will feel the heat more. This doesn't indicate that it's overheating and will not harm the computer to be hot to the touch.

    Your fans are always on when your Mac is on, spinning at a minimum of 2000 rpm (for MBPs) or 1800 rpm (for MBAs, MBs and minis). iMacs have 3 fans with minimum speeds in the 800-1200 range. They will spin faster as needed to keep temps at a safe level. If they're spinning up without increased heat, try resetting the SMC. (PRAM/NVRAM has nothing to do with these issues, so resetting it will not help.)

    The intake and exhaust vents are in the back of the computer near the hinge on all Mac notebooks. The iMac vent is a slot on the back near the top of the computer. Make sure the vents remain unblocked to allow your computer to perform at its best.

    Learn about the fans in your Mac
    Apple Portables: Operating temperature

    For Flash-related issues:
  3. yusukeaoki macrumors 68030


    Mar 22, 2011
    Tokyo, Japan
    Thats normal.
    Mines goes nearly 90C sometime as well.
    If it concerns you, try reapplying thermal paste.
  4. thundersteele macrumors 68030

    Oct 19, 2011
    The heat has to go somewhere, your desk is working as a heat sink :)

    Macs are not particularly good at keeping the temperatures down, but they always operate within the specifications of the CPU and GPU. This is not new, and previous Mac generations reach about the same temperatures. So far, I am not aware of a big stream of broken MBPs that were used for gaming or video editing - the exception is the Nvidia 8600 GPU issue which tends to fail due to a production defect.
  5. macjunk(ie) macrumors 6502a

    Aug 12, 2009
    same here

    I have the same problem. Called up Applecare and they advised a PRAM reset. Did not help in anyway though.
  6. GGJstudios macrumors Westmere


    May 16, 2008
    It didn't help because PRAM/NVRAM has nothing to do with heat/fan issues. Resetting it will not help. Only resetting the SMC addresses fan issues, and even that doesn't have any affect on heat generated by resource-intensive apps like games.
  7. macjunk(ie) macrumors 6502a

    Aug 12, 2009
    Right you are. Thanks for the info.
    I guess the best solution is to invest in one of those cooler pads. Thermapak pad looks interesting and is cheap..

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