2 Q's on my new MacBook Pro

Discussion in 'MacBook Pro' started by shez, Nov 29, 2015.

  1. shez macrumors member

    shez

    Joined:
    Oct 14, 2015
    #1
    Hi. I recently purchased the new 2015 Retina Macbook Pro 15" (2.2Ghz i7 Haswell/16GB Ram/256GB Flash) and have a few questions if anyone can help me.

    1. The CPU temperature runs around 45-55 degrees under normal use but when put under a bit of strain (downloading) the CPU temps raise up to 90 degrees. Is this normal and is it safe for the processor to hit these temperatures?

    2. When changing the battery the magsafe LED is orange - when the battery is full this turns to green. if I leave the power connected I'm guessing the Macbook then uses the mains power instead of the battery - am I right?

    Thanks in advance.
     
  2. Tentallon macrumors newbie

    Joined:
    Nov 29, 2015
    #2
    Congrats on your new purchase! I think that the temps are fine. That doesn't seem to out of line. And I believe that when charging the MacBook that Apple set them up to stop charging when full to keep the battery from constantly charging.
     
  3. T5BRICK macrumors 604

    T5BRICK

    Joined:
    Aug 3, 2006
    Location:
    Oregon
    #3
    Yup. If it were getting too hot, it'd shut down.

    Correct. My rMBP is plugged in most of the time and my battery has very few cycles on it because of this. You just want to let it run down and charge enough that it completes 1 cycle every month.
     
  4. shez thread starter macrumors member

    shez

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    Oct 14, 2015
  5. maflynn Moderator

    maflynn

    Staff Member

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    #5
    Yup, perfectly normal. My 2012 rMBP runs in that same temp range.

    Yes, for the most part. I typically run my laptop plugged in quite often and I've not run into issues.
     
  6. andreyush macrumors 6502

    andreyush

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    Oct 24, 2015
    #6
    Why is it need to completes 1 cycle evey month ?
     
  7. MushroomMan macrumors member

    MushroomMan

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    Australia
    #7
    Those temps are obviously not Centigrade?
    haha
     
  8. Aneef macrumors regular

    Aneef

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    Lahore, Pakistan
    #8
    "To keep electrons flowing in and out of the battery"
     
  9. T5BRICK macrumors 604

    T5BRICK

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    #9
    Apple used to have a page suggesting it, but I couldn't find it last time I looked. They compared it to exercise.
     
  10. MagicBoy macrumors 68040

    MagicBoy

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    #10
    What are they then?
     
  11. LIVEFRMNYC macrumors 603

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    Oct 27, 2009
    #11
    I'm no battery expert, but from watching my iStat app ...... My battery health was at 98% health at first, after 11 cycles it shown 100% health. I was told by a friend if I wait too long to use it on battery power again, the health would slow decrease back down in percentage. So I make sure to drain it down to warning level 10% once every two weeks. Probably overkill on my part though.
     
  12. MagicBoy macrumors 68040

    MagicBoy

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    Location:
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    #12
    Yeah, it's overkill. The batteries as fitted to the 2011 onwards Macs will take high cycle counts and partial discharges in their stride. My 2011 was still at 96% with nearly 700 cycles on it by the time I got replaced.

    On the flipside, the 2006 I had was terrible. A couple of hundred cycles and it would give you 10 minutes tops. I went through three batteries in that machine, all genuine Apple.
     
  13. Adamantoise macrumors 6502a

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    Aug 1, 2011
    #13
    Of course they are ... You think CPU's idle at 45-55 Fahrenheit? Lol, that's cooler than room temperature.
     
  14. LIVEFRMNYC macrumors 603

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    Oct 27, 2009
    #14

    Good to know. Thanks.
     
  15. MushroomMan macrumors member

    MushroomMan

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    May 31, 2015
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    Australia
    #15
    You guys serious - CPU temps get to 90 degrees Centigrade - that is crazy hot?
    We all know that's only 10 degrees C away from water turning to steam!

    I had no idea the internals of my trusty computer could possibly reach that kind of temperature.
    (I thought like 60 - 70 degrees C would have been a maximum).
     
  16. T5BRICK macrumors 604

    T5BRICK

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    Oregon
    #16
    The maximum temperature for the Intel Core i7 4770HQ is 100C. They can get pretty hot.

    http://ark.intel.com/products/83505/Intel-Core-i7-4770HQ-Processor-6M-Cache-up-to-3_40-GHz
     
  17. MushroomMan macrumors member

    MushroomMan

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    #17
  18. snaky69 macrumors 603

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    Mar 14, 2008
    #18
    Not out of control no. That's just normal operating temperature for mobile chips. Desktop chips run much cooler, because there's a lot of air to move around in a desktop.
     
  19. MagicBoy macrumors 68040

    MagicBoy

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    #19
    News just in : CPUs are made of silicon, not water!

    BTW that's the on die temperature of the CPU core, not the surface temperature of the cooling system.

    Desktop chips are also rated to 100 or 105C. Above that they throttle back power consumption to prevent premature failure.
     
  20. Adamantoise macrumors 6502a

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    Aug 1, 2011
    #20
    Oh yeah, processors get close to boiling point for water, that's normal for them.
     
  21. MushroomMan macrumors member

    MushroomMan

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    Australia
    #21
    Always appreciate being schooled by you guys here ;)

    So, how about portable devices like iPad, iPhones etc - do their processors reach similar temperatures?
     

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