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#1 2007-02-20 3:00 pm
- Ephilei
- Member
- Registered: 2007-02-20
- Posts: 2
MacBook Overheating
I'm folding on a macbook and it's overheating and the fans run permanently. Is this normal? It hasn't crashed, but I'm at the point where I only fold when I'm not using it so I can set my mac on its side to get lots of air.
Pls help!
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#2 2007-02-20 4:31 pm
- Nefarious
- Tuning Fork
- Moderator

- From: 45°22"N 84°57"W
- Registered: 2002-09-30
- Posts: 7998
Re: MacBook Overheating
You can set your CPU usage to "Reduced" in System Preferences / Energy Saver.
That's the best that I can think of.
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#3 2007-02-20 9:12 pm
- Ephilei
- Member
- Registered: 2007-02-20
- Posts: 2
Re: MacBook Overheating
Has anyone with a macbook/macbook pro had the same experience?
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#4 2007-04-10 9:30 pm
- RickPrather
- Member
- From: Modesto, CA
- Registered: 2007-02-07
- Posts: 4
Re: MacBook Overheating
Nefarious wrote:
You can set your CPU usage to "Reduced" in System Preferences / Energy Saver.
Unfortunately there is no "Reduced" setting for an Intel Mac.
I am folding with my MB now but the fan runs at about 6000 and the CPU is around 77C. all the time. I am still trying to convince myself that it will be OK to continue.
I am sure it will make it but it is definitely working hard.
BTW, with the SMP clients you need to run them pretty much all the time or you will miss deadlines.
The only thing that I have been comfortable with is to run Folding under Windows in Parallels but the production is considerably less than running the native SMP client.
Rick
Podcast crew member - MacOSG
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#5 2007-04-10 11:29 pm
- mac-compliant
- Member
- Registered: 2006-06-21
- Posts: 221
Re: MacBook Overheating
I'm trying to convince myself of the same thing.
I quit folding after giving the new SMP client a try...wanted to use it cause I understand it makes multi-core puters more productive. I was looking for productivity, especially when at work and when sleeping. It got so hot that I'd wake up in the middle of the night to check on it...work was worse. I imagined I'd come home to the charred remaind of a MBP on my table.
If there are any hints out there, they would be appreciated...greatly.
15.4" MacBook Pro, 2.33 GHz Intel Core 2 Duo, OSX 10.4.10, 2 Gigs RAM.
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#6 2007-04-10 11:31 pm
- Nefarious
- Tuning Fork
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- From: 45°22"N 84°57"W
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- Posts: 7998
Re: MacBook Overheating
RickPrather wrote:
Nefarious wrote:
You can set your CPU usage to "Reduced" in System Preferences / Energy Saver.
Unfortunately there is no "Reduced" setting for an Intel Mac.
Color me surprised. 
sigh
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#8 2007-04-11 11:29 am
- RickPrather
- Member
- From: Modesto, CA
- Registered: 2007-02-07
- Posts: 4
Re: MacBook Overheating
spinner wrote:
Be thankful your fans work.
My MacBook Pro ones don't... I should really get that fixed.
Spinner
Yes, you should!
But, are you sure they don't work?
The MBP fans rarely run at anywhere near the speed or noise levels of the MacBook.
If you haven't already, you might try Hardware Monitor or the iStat Pro widget to monitor your temps and fan speeds.
Rick
Podcast crew member - MacOSG
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#9 2007-04-11 7:47 pm
Re: MacBook Overheating
RickPrather wrote:
But, are you sure they don't work?
The MBP fans rarely run at anywhere near the speed or noise levels of the MacBook.
If you haven't already, you might try Hardware Monitor or the iStat Pro widget to monitor your temps and fan speeds.
It has been checked by a tech. I took the laptop back before they could fix it because I needed the laptop for work.
Laptop shuts down occasionally unless I run an external fan pointed at it.
Spinner
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#10 2007-04-22 1:04 pm
- tomfoolery
- Zu-Zu-Zune!

- From: Blue Zune of Death
- Registered: 2004-10-22
- Posts: 2303
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Re: MacBook Overheating
RickPrather wrote:
I am folding with my MB now but the fan runs at about 6000 and the CPU is around 77C. all the time. I am still trying to convince myself that it will be OK to continue.
I would not be at all happy with that! If my desktop reaches 60°C under load I get twitchy...
tF
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#11 2007-04-22 2:18 pm
- RickPrather
- Member
- From: Modesto, CA
- Registered: 2007-02-07
- Posts: 4
Re: MacBook Overheating
tomfoolery wrote:
..
I would not be at all happy with that! If my desktop reaches 60°C under load I get twitchy...
tF
I'm not crazy about it myself but that's nature of the beast.
I have been folding with it full time for a couple of weeks. It's on a USB fan support pad and runs about 72 C. and 5800 rpm all the time.
BTW, my Intel iMac, folding full time, runs in the high 50's with a fan speed of about 1600. Can't even hear it. 
Rick
Podcast crew member - MacOSG
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#12 2007-07-09 6:47 pm
- Mr~Mac
- Member

- From: Restaurant at End of Universe
- Registered: 2003-07-17
- Posts: 815
Re: MacBook Overheating
I was getting CPU temperatures as high as 87 celsius (188.6 degrees F) with the fans on max, according to iStat Pro when I ran the SMP client on my Macbook Pro. Needless to say I turned it off before it got the chance to do some real damage, either to itself or my lap.
Dont worry Mr iMac you will be back, we'll keep the chocolate warm for you.
Gee, you got a Windows box to blue screen? That's inconceivable!
Thank you Macskeeball for my great new avatar!
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#13 2007-07-09 8:52 pm
- FutureDreamz
- 1.1.2.3.5.8.13.21.34.55

- From: カナダ
- Registered: 2007-01-07
- Posts: 4511
Re: MacBook Overheating
What are normal operating temperatures?
Thanks for clicking.
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#14 2007-07-09 9:04 pm
- Mr~Mac
- Member

- From: Restaurant at End of Universe
- Registered: 2003-07-17
- Posts: 815
Re: MacBook Overheating
From 50's to 70's (Celsius) under heavy load.
Last edited by Mr~Mac (2007-07-09 9:04 pm)
Dont worry Mr iMac you will be back, we'll keep the chocolate warm for you.
Gee, you got a Windows box to blue screen? That's inconceivable!
Thank you Macskeeball for my great new avatar!
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