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Cooling Fan, Loud on Start up ?
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Mac Enthusiast
Join Date: Jun 2003
Location: Southern California
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Offline
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Is it normal to have the cooling fan spin especially fast on startup, only for it to taper off into a steady spin cycle?
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Senior User
Join Date: Jan 2001
Location: San Francisco, CA
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I've noticed that some noises can become 'covered up' once the main fans get really going. It's probably actually louder dbls-wise, but just feels quieter because the white-noise is smoothing things over.
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Mac Enthusiast
Join Date: Feb 2003
Status:
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yeah, its fine. my MDD is like that. i assume its becuase the fan speed cant be controlled until something specifically boots up.
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"Take a little dope...and walk out in the air"
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Professional Poster
Join Date: May 2001
Location: Switzerland
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Yep, my Dual 867 MDD machine used to do exactly the same thing...
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Professional Poster
Join Date: Jun 2003
Location: Hyrule
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It's because the BIOS has control of the fans but until the OS or controller in open firmware loads, the fans will run at full blast.
I've noticed this in every recent mac to date, including imacs and powermacs 
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Aloha
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Addicted to MacNN
Join Date: Apr 2001
Location: The bottom of Cloud City
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Originally posted by Eyenovation:
Is it normal to have the cooling fan spin especially fast on startup, only for it to taper off into a steady spin cycle?
Yes, I heard the G5's do the same.
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"Ahhhhhhhhhhhhhhhh"
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Mac Enthusiast
Join Date: Jun 2003
Location: Southern California
Status:
Offline
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No problem. As long as I have nothing to worry about. 
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