Handbrake = really hot computer.

Discussion in 'MacBook Pro' started by vbman213, Jul 23, 2010.

  1. vbman213 macrumors 6502

    Apr 13, 2010
    Should I be concerned about my temps.

    With light use (browsing, Pages, iTunes, etc), my computer hovers around 35 to 45 deg

    but with very very intensive work (Handbrake for example) which runs the CPU at near 100%, I hit temps upwards to 95*

    Normally hovers around 88 to 95*

    I did see it hit 99*, but the fans brought it down.

    All the above temps are "Pre-SMCFanControl"

    But with SMC...

    With the "Higher RPM" setting, I can hold 85* while running Handbrake.

    Are these temps normal?
  2. xi mezmerize ix macrumors 6502a

    xi mezmerize ix

    May 24, 2010
    Maryland, USA
    I really don't know if they are normal or not. My computer runs around 50C when doing light work like you described, but only goes to 70C (at most) when using handbrake and nothing else. It seems my computer is hotter than yours for lighter work, and cooler for heavier work. Weird. I guess that's why I don't know what's normal.
  3. TMRaven macrumors 68020


    Nov 5, 2009
    Are you elevating the macbook off a surface? Since the macbooks have aluminum enclosures, a lot of that heat is probably being drawn downwards as well, but there's not enough airflow under the macbook to fully take the heat away.
  4. BobbyCarbn macrumors regular


    Jun 21, 2009
    Handbrake will max out all CPU cores you give it access to. So, your running your MB balls out for over an hour or two in some cases when encoding video.

    If your temps get too high, the MacBook will shut down and or throttle the CPUs to bring the temps down.

    Any computer will get hot if you run it at 100% CPU for an extended period of time.
  5. sammich macrumors 601


    Sep 26, 2006
    The i7 MBP's are known to get amazingly hot. But don't fret, leave it in a good place and it'll be fine. The hardware will shut itself down if it gets too hot.
  6. MBHockey macrumors 68040


    Oct 4, 2003
    New York
    As any macbook pro would would if it were maxing out all its cores.
  7. Pax macrumors 6502a

    Dec 12, 2003
    Absolutely normal, I think all Macs do this. My C2D does exactly this, so do numerous others I've seen in person and on the forums.
    Here's a nice analysis done by someone with graphs etc
    and here are a few more examples

    Mac laptops run hot, up to 105 C for a few minutes, at 90-95C as a long term average. Always within Intel specifications, but hot. They seem to be designed to do this.

    Personally I have stopped worrying about it. My old Macbook is 4 years old and running fine. If you are worried about it, the only thing you can really do is download SMCfancontrol and use that.
  8. olletsocmit macrumors 6502


    Jun 24, 2010
    Its normal. Handbrake makes my computer run hot as hell when ripping a DVD. It is so annoying how hot the MacBook Pro gets.
  9. Patrick J macrumors 65816

    Patrick J

    Mar 12, 2009
    Oporto, Portugal
    It gets just as hot as the next Windows laptop.
    Except the Windows one is made out of plastic, so instead of moving the heat out of the case like in the Macbook (and hence you feeling like it is going to explode), it stays inside and slowly roasts the core components. But to the touch it is nice and cool. Yummy.
  10. xi mezmerize ix macrumors 6502a

    xi mezmerize ix

    May 24, 2010
    Maryland, USA
    Finally, someone that understands thermodynamics.
  11. xlii macrumors 68000


    Sep 19, 2006
    Millis, Massachusetts
    Your temps sound normal when running handbrake. I have a 13" MBP and handbrake runs at 170F. I use smcfancontrol to put jack the fan speed up to 5000 rpm and I raise the MBP up on 1 inch blocks to help deliver more airflow to the bottom of the machine.
  12. TheBritishBloke macrumors 68030


    Jul 21, 2009
    United Kingdom
    I have the same machine as you. Mine also goes to about 85 when using handbrake.

    You only need to worry when it goes into triple figures. Or when it burns through your desk. Either way, its a bad sign.
  13. ouimetnick macrumors 68020


    Aug 28, 2008
    Beverly, Massachusetts
    The Window notebooks i've used seem to do a good job at cooling. My brothers early 2008 2.4GHz MBP ides at 150F, and at full load reaches 218F. Thats 103C! Now my windows computers reach 198F/92C under full load. Both the MBP and windows laptop stay very quiet with their fans, but the MBP gets hot enough to BURN you. The new Apple notebooks (unibody MBs and MBPs) Do stay cool and quiet though.
  14. Lokrado macrumors regular

    Jan 26, 2009
    I was wondering about this, When does the CPU's start to throttle and/or shut off turboboost? I even read the i7 620M specifications but i couldn't find any specific figures other then the max temperature being 105º C
  15. sauer228 macrumors member

    Jun 11, 2009
    I wouldn't worry, mine does the same thing. Not as hot as yours, but it jumps from 35 during normal use to about 75-80 using Handbrake.
  16. Reelknead1 macrumors 6502

    Sep 21, 2009
    No need to worry, This program just uses your computer for what its designed for.

    Here is my mac pro 2.66 quad core x 2 with 16gb of ram.

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