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New C2D and Heat Issues

679 Views 10 Replies Latest reply: Nov 24, 2006 11:58 AM by Richard Platt RSS
Sonia McConnell Calculating status...
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Nov 23, 2006 8:28 PM
do the new C2D MBP have any heat issues like the old G4 PB's. My old
1.67 G4 PB would cook about anything you sat it on.

PowerMac G5 Dual 2.3/2.5gb/256VRAM   Mac OS X (10.4.8)  
  • BillF Level 3 Level 3 (640 points)
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    Nov 23, 2006 8:42 PM (in response to Sonia McConnell)
    The Core2Duo MBP 17 is cooler than the Powerbook G4 1.67 ghz machine in my opinion. I have it sitting on my lap right now.

    They did a great job fixing the heat issues on the MBP 2.33 17 in. MBP series.
    17 in. C2Duo 2.33
  • Mac Medic (be@MacOSG.com) Level 6 Level 6 (17,290 points)
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    Nov 23, 2006 9:19 PM (in response to BillF)
    My 15" Core2Duo MBP is running 33C (enclosure bottom side) according to Temperature Monitor.

    -Bmer
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    Core 2 Duo MacBook Pro • 120GB HD • 2GB RAM, Mac OS X (10.4.8), 60G Photo iPod • AppleCare
  • brother Level 3 Level 3 (855 points)
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    Nov 23, 2006 9:59 PM (in response to Sonia McConnell)
    This is my thermal observations of the 4 different types of Apple laptops that I've either owned or worked on in the past few years.

    rev.A 12" Powerbook/866 and rev.A Macbook Pro are both equally scalding. In fact, it genuinely hurt to work with either of these on my lap, even doing casual, non-processor intensive tasks. Possibly the hottest laptops I've ever used.

    My last laptop was a 15" Powerbook/1.5GHz, and it was okay if I used it on my lap for casual tasks. If I did any multimedia or anything else that was processor intensive, I would have to put it on a table or a cooling stand.

    My current Macbook C2D is possibly the coolest laptop I've used in recent memory. Even when I'm nailing the processor, it's still very usable on my lap. From what i've heard the Core2Duo chip is not actually rated any lower in head output than the original Core Duo, so maybe Apple just designed a better cooling/heat sink setup for it.

    15" Macbook Pro/2.33 Core 2 Duo   Mac OS X (10.4.8)   2 GB RAM/160 GB HD
  • Mac Medic (be@MacOSG.com) Level 6 Level 6 (17,290 points)
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    Nov 23, 2006 10:33 PM (in response to brother)
    Duo, so maybe Apple just designed a better
    cooling/heat sink setup for it.


    That, along with the fans running at 2000RPM all the time.

    -Bmer
    Mac Owners Support Group
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    Core 2 Duo MacBook Pro • 120GB HD • 2GB RAM, Mac OS X (10.4.8), 60G Photo iPod • AppleCare
  • Mallow005 Calculating status...
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    Nov 24, 2006 12:00 AM (in response to brother)
    My C2D macbook pro hits 80C+ when both cores are at 100% on a hard surface. Not recommended for lap usage.
    15" Macbook Pro C2D, Mac OS X (10.4.8), 2.33ghz
  • brother Level 3 Level 3 (855 points)
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    Nov 24, 2006 12:20 AM (in response to Mallow005)
    Hey Mallow005 what temp measuring utility are you using, just out of curiosity?

    I think my book was topping out at 63-65C , with both cores maxed out, but I never felt the need to take it off my lap. The fans sure were going, though...
    15" Macbook Pro/2.33 Core 2 Duo, Mac OS X (10.4.8), 2 GB RAM/160 GB HD
  • ivanovitch Calculating status...
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    Nov 24, 2006 4:34 AM (in response to Mallow005)
    I'm working with two MacBook Pro C2D's - both run very hot. Hotter than any previous PowerBook. However, I'm currently in the Southern Hemisphere, and it's hot anyway. I suggest that come a northern summer, your measurements might vary somewhat. Instinctively, I'd say that the new machines are about 10 degrees (c) hotter, and quite uncomfortable to leave on a lap without extra elevation or thermal protection.
    MacBook Pro Core 2 Duo, Mac OS X (10.4.8)
  • brother Level 3 Level 3 (855 points)
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    Nov 24, 2006 11:18 AM (in response to ivanovitch)
    Now that you mention it, one thing I noticed is that the fans in my old PB/1.5 never seemed to make much of a difference in hot or cold weather. The Powerbook seemed to stay pretty uniformly hot.

    However the weather is decently cool now in Southern California, and when the fan kicks in on my C2D, it seems to make a significant difference, and like I said, enough of a difference to leave this thing on my lap, even when doing video and multimedia. I'll have to see how it is in a few months when the fan is blowing hot, global-warming, summer air through my Macbook.
    15" Macbook Pro/2.33 Core 2 Duo, Mac OS X (10.4.8), 2 GB RAM/160 GB HD
  • dernsber Level 1 Level 1 (0 points)
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    Nov 24, 2006 11:46 AM (in response to Mallow005)
    I do regular gaming on my laptop, with it on my lap.. Mainly just WoW.. but the battery dies before my lap gets to warm usually....
    MacBook Pro C2D, Mac OS X (10.4.8)
  • Richard Platt Level 6 Level 6 (9,230 points)
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    Nov 24, 2006 11:58 AM (in response to Sonia McConnell)
    Both the processor core temperatures and the lap temperature in my 15" Core 2 Duo are significanly cooler than my 17" Core Duo. In fact, the 15" feels as cool as any other laptop I have used both Mac and Windows.
    Mac Pro 2.66 GB & iMac 2.0 Core Duo & 15" Core 2 Duo MacBook Pro, Mac OS X (10.4.8)

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