iStats for MBP: Whats the normal temp ranges?

Discussion in 'MacBook Pro' started by amitdoc2b, Mar 28, 2008.

  1. amitdoc2b macrumors 6502a

    Feb 25, 2008

    Whats the normal temperature ranges for normal usage (i.e. web surfing, typing documents, using aol, etc) on a 2.5GHZ Penryn 17" MBP when used via adaptor, for each part of the notebook as shown in iStats? Can you please tell me these normal ranges in Celsius or Farenheit? That way I can monitor my MBP better.

  2. design-is macrumors 65816


    Oct 17, 2007
    London / U.K.
    I'll have a look when I get home...

    Care to enlighten us with your temperatures? :rolleyes:
  3. shoppy macrumors 6502a

    Mar 4, 2007
    My 17"SR 2.6 MBP is approx 39-45 under normal use.

    My new 2.5 15.4" is approx 34 degrees.
  4. naid macrumors regular

    Mar 13, 2008
    2.4 MBP 15.4" 2GB

    Rough numbers:
    ~50 with the laptop open
    ~60 with an external monitor @ 1920x1200
    ~65 with 2 external monitors running as one @ 3840x1200
    70+ while playing a game on one monitor while browsing on the other. At this point, fans get to 4-5k rpm

    No real problems but I'm starting to suspect thermal paste issues...
  5. alphaod macrumors Core


    Feb 9, 2008
    Same here. :rolleyes:
  6. amitdoc2b thread starter macrumors 6502a

    Feb 25, 2008
    17" Penryn 2.5GHZ MBP on for 60 minutes after downloading and installing a 160MB file from the web onto my hard drive:

    CPU A ...............56 (celsius)
    GPU Diode..........68
    GPU Heatsink......57
    Heatsink A..........59
    Heatsink B..........48
    Enclosure Base....34
    Mem Controller....49
    Airport Card........57

    Can anyone tell me if these numbers are normal, too hot, or too cool?

  7. Watabou macrumors 68040


    Feb 10, 2008
    United States
    I have a 2.4 penryn MBP and it is currently downloading a 2.74 GB file and I'm running iTunes, Pages at the same time.

    My current temps are :

    CPU A: 49
    GPU Diode: 53
    GPU Heatsink: 46
    Heatsink A: 44
    Heatsink B: 34
    Bottom : 26
    Memory controller: 44
    HD: 37
    Airport: 58

    Fans are at 1992-2003 rpm.
  8. newbie jnr macrumors member

    Mar 10, 2008
    My 2.4 Penryn has been running continuously for about 4 hours. Mostly Web-browsing (Firefox) and iTunes.

    Currently (In Celsius):
    CPU A 47
    GPU Diode 61
    GPU Heatsink 48
    Heatsink A 48
    Heatsink B 40
    Base 30
    Mem Controller 41
    Airport 43
    HDD 32

    fans ~2000rpm

    GPU diode seems a bit hot side maybe?

    What makes people suspect thermal paste issues? are there certain signs?
  9. jmmm macrumors newbie

    Mar 16, 2008
    My 2,4ghz Penryn MBP

    My 2,4 Penryn has been running continuously for about 6 hours. Mostly Web-browsing safari, iTunes and the use of word

    Currently (In Celsius):
    CPU A 43
    GPU Diode 52
    GPU Heatsink 45
    Heatsink A 45
    Heatsink B 37
    Base 29
    Mem Controller 37
    Airport 33

    fans ~2000rpm

    What if you run a stress test on your cpu (start chess and create a new game computer vs computer a let it run)

    the temp on my cpu then goes up to 66c and the fans stays at 2000rpm who does your fans react?
  10. n8c macrumors regular

    Jan 19, 2008
    I've got a 2.5 GHz also, and here are my numbers (iStat Pro screenshot attached). Nothing too intensive running right now (Firefox, iTunes, Acrobat Reader), has been on for an hour or so.

    Should we expect 2.5 GHz to run almost 10 degC hotter than the 2.4? Because that's what it looks like right now. Unless both amitdoc and I have abnormally warm computers...

    Attached Files:

  11. alphaod macrumors Core


    Feb 9, 2008
    No, it looks like you need to put in new thermal paste. Those were the temps I had doing basic stuff; downloading, office 08, acrobat, photoshop, minefield.

    Now after a thermal paste replacement and burn-in:
  12. ddavid macrumors regular

    Jan 4, 2008
    How do you go about replacing the thermal paste? Does it affect your warranty?
  13. roxbury macrumors newbie

    Apr 2, 2008

    Hi alphaod,

    Sory to ask,

    Can you please tell me ,what mean is: (thermal paste) ?
    and, how to make -> thermal paste replacement ?.


    I dont bought yet MBP,

    After I buy and than start to use, I would like to use right way.

    Thanks for respond:)
  14. svtguy08 macrumors member

    Apr 1, 2008
    For normal use my santa rosa 2.6 stays around 115 F and when I do 3d modeling or rendering it will spike to about 175 F.

    I keep my laptop on a stand with vents to allow it breathe fresh air and exhaust the hot air. I also keep the fans running 3000 rpm constantly.

  15. alphaod macrumors Core


    Feb 9, 2008
    So you have a processor that runs very hot and you use a heatsink (a chunk of metal with fins to increase surface area). But how do you transfer the heat from the CPU to the heatsink? You use thermal paste which is like a heat conductor that fill the gaps between the CPU and the heatsink. Too little paste means the gaps are not filled and the heat isn't transfered. With the Macbook Pro's case, it's too much. It's the CO2 in the atmosphere. Too little the planet gets cold, which is bad, too much it gets hot, which is also not very good, but is liveable; The replacement is to get just the right amount.

    A replacement requires you to disassemble the computer. You don't need to do this. I just did it because I was upgrading my hard drive which requires disasembly as well.
  16. alphaod macrumors Core


    Feb 9, 2008
    You have to disassemble your computer and remove the logic board, then clean the old paste off and put new ones one.

    And yes it probably voids your warranty if you do it wrong.
  17. eyespii macrumors 6502

    Mar 8, 2008
    I've definitely noticed that the temperature on my penryn MBP is warmer than on my old merom MBP. Right now I'm running ichat, firefox, and itunes, the computer has been on for about 4 hours.

    It's not uncomfortably warm to the touch, but it definitely feels warmer than my old Merom MBP. Wish I could cool it down a bit, but i'm not about to open this thing up to put in paste!

    Attached Files:

  18. mox123 macrumors 6502

    Jul 18, 2007
    the CPU temp is usually around 46-47C when i use my MBP on my office metal desk; at home on a wood table i get 53C on average doing similar tasks....

    perhaps we should really specify the operating temperature with respect to the external environments??

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