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Apple Notebooks Apple's notebook computers including MacBook Pro, MacBook, MacBook Air, PowerBook, and iBook.

MacBook Pro: Fan Speed


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Tarek

 
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Hello,

I'm using a 2.5" GHz early '08 MacBook Pro and it's running fine. When I'm on Windows, the temperature increases and reaches around 63 celsius but that's normal as I've been told here. When I am on Macintosh, the temperature is usually around 46 to 51 celsius when running on AC power, and lower when on battery.

Thing is, I have smcFanControl and I set both fans to 2825 rpm. What is the best speed that I should set them to?

This is my computer's temprature - http://i35.tinypic.com/nlqryv.png

I won't post it as an image because it's too big to fit the screen and will make the page look ridiculous.

Thank you.
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Tarek

 
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Anyone there? lol
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chscag

 
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This might not be the answer you're looking for.... but the best speed to set both fans to is simply let the system control the fans instead of SMCFanControl. Trying to set the fans to a higher RPM to induce better cooling is only going to wear them out faster thereby creating future problems.

As to the increased temperatures in Windows.... How are you using Windows on your MBP? From Boot Camp or from a VM? If from Boot Camp, post back and I'll suggest a small Windows program that will help control the higher than normal CPU temperatures without modifying fan speeds.

Regards.
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Eric559

 
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Look at this current thread:

My MBP Just hit a temperature of 102 Celsius (215 Fahrenheit!)!

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ticedoff8

 
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Quote:
Originally Posted by Eric559 View Post
A NEW RECORD!!
Mine only got as high as 92c.

BTW: I never used smcfancontrol and both of my fans died.
So - using smcfancontrol has very little to do with the life of the fans. They are either going to die - or not.
I load smcfancontrol now at startup, because I never knew one of my fans was dead until the 2nd fan died - and my MBP started shutting off due to over temp. smcfancontol displays the fan RPM at the top of the screen - so at least I'll know the next time.
My fans were coated in dust and I had to really push hard to get them to turn - so, I think it was dust in the bearings that killed them - not running too fast.
I replaced both fans and put in a new 500GB 7200rpm drive at the same time - now it runs in 40 to 60c range.
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electrical motors have a finite lifespan. Running them faster than needed, without cause, will very likely shorten their lifespan, simply because in reality there was really only so many rpm's in em. btw.. it's the bearings that wear, and die.. normally (at least in a brushless motor)

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Tarek

 
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Quote:
Originally Posted by chscag View Post
This might not be the answer you're looking for.... but the best speed to set both fans to is simply let the system control the fans instead of SMCFanControl. Trying to set the fans to a higher RPM to induce better cooling is only going to wear them out faster thereby creating future problems.

As to the increased temperatures in Windows.... How are you using Windows on your MBP? From Boot Camp or from a VM? If from Boot Camp, post back and I'll suggest a small Windows program that will help control the higher than normal CPU temperatures without modifying fan speeds.

Regards.
I am running Windows from Boot Camp. Virtual Machine isn't my thing. Tried and hated it.

Thanks for your input, guys. I'm pretty sure my fans are going to die sooner or later, but I don't think smc is going to harm them that much. And boy, 102 Celsius? Holy!
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chscag

 
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Quote:
I am running Windows from Boot Camp. Virtual Machine isn't my thing. Tried and hated it.

Thanks for your input, guys. I'm pretty sure my fans are going to die sooner or later, but I don't think smc is going to harm them that much. And boy, 102 Celsius? Holy!
If you would like to keep your CPU running a bit cooler while in Windows, give the "RMClock Utility" a try. Download from here. It's free and will hold down the temperature of your CPU while running in Windows. It does not adjust the fan speed. Read the literature and follow directions carefully. I'm currently using it in Windows 7 from Boot Camp. I especially like the temperature and CPU load readouts - for both cores.

Regards.
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Tarek

 
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Oh okay, thanks a lot man. Yeah, I use Windows 7 32-bit as well.
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