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My new MacBook Pro - normal fans?

B

Bear-san

macrumors newbie
Original poster
Jul 1, 2009
8
0
Greetings everyone!


I'm new to this community and to the whole Apple thing, I've decided to tryout a MacBook Pro. In case you are wondering, yes I have been searching the forum for this problem, but I don't think there was any thread that could help me. It's the 2008 model MacBook Pro with the 9600m gt 512 card.

So, I just noticed that when I have my MacBook Pro in High Performance mode it emits an high pitched noise when the fans are running around 6.2k RPM and the CPU and GPU is around 63c. The noise follows the speed of fans, and at idle the noise is gone.

I have uploaded a video of it on youtube here:
http://www.youtube.com/watch?v=HioRgTNpNRA
 
Bear-san said:
Greetings everyone!


I'm new to this community and to the whole Apple thing, I've decided to tryout a MacBook Pro. In case you are wondering, yes I have been searching the forum for this problem, but I don't think there was any thread that could help me. It's the 2008 model MacBook Pro with the 9600m gt 512 card.

So, I just noticed that when I have my MacBook Pro in High Performance mode it emits an high pitched noise when the fans are running around 6.2k RPM and the CPU and GPU is around 63c. The noise follows the speed of fans, and at idle the noise is gone.

I have uploaded a video of it on youtube here:
http://www.youtube.com/watch?v=HioRgTNpNRA
Click to expand...

Sounds normal to me. If the fans are spinning at 6000+, you're going to hear it but I'm surprised your fans come on that soon. Most have their fans rev up near 70 C+. But again, from that clip, sounds normal to me.
 
iLog.Genius said:
Sounds normal to me. If the fans are spinning at 6000+, you're going to hear it but I'm surprised your fans come on that soon. Most have their fans rev up near 70 C+. But again, from that clip, sounds normal to me.
Click to expand...

Okay, thanks for the answer - It got me really worried. :)


Sorry for asking, but you did hear the high-pitched sound right?
 
Just to clarify, do you hear it only when it spins at 6000+ or even at around 4000 RPM? I could understand if it was only when it's spinning at 6000+ but if you hear it at 4000 which isn't that fast, I don't think you should hear it.
 
iLog.Genius said:
Just to clarify, do you hear it only when it spins at 6000+ or even at around 4000 RPM? I could understand if it was only when it's spinning at 6000+ but if you hear it at 4000 which isn't that fast, I don't think you should hear it.
Click to expand...


Well, you can hear it - but the tone is lower... Imagine a jet plane, sounds like that. More rpm gives higher noise(whine). It starts around 4k RPM, when browsing or watching movies there's nothing.
 
Bear-san said:
Well, you can hear it - but the tone is lower... Imagine a jetplane right, sounds like that. More rpm gives higher noise(whine).
Click to expand...

Ok. Then from that and the clip, I'm going to say it's normal unless someone wants to chime and say it's not because I hear my fans when playing games but wouldn't necessarily call it a "whine".
 
iLog.Genius said:
Ok. Then from that and the clip, I'm going to say it's normal unless someone wants to chime and say it's not because I hear my fans when playing games but wouldn't necessarily call it a "whine".
Click to expand...

I have gone through two unibody macbook pros. Both make a high pitched noise that's found in your video when the fans hit 6000. It's just the nature of the fans and the sound the air makes when it's pushed through the grates. I imagine some units have a lower or higher frequency pitch. But on the two I got, they sound identical to yours at the high rpms. It's unavoidable. I would call it almost a whine. Your fans are fine however..they're just pushing extreme amounts of air=high pitched noise. If you heard noise at 2000rpm, then I'd be concerned. The faster they spin, the more hum/whine they produce.
 
iLog.Genius said:
Ok. Then from that and the clip, I'm going to say it's normal unless someone wants to chime and say it's not because I hear my fans when playing games but wouldn't necessarily call it a "whine".
Click to expand...

As in hear, you hear the the fans "motors", and not the air blowing right?
 
Jottle said:
I have gone through two unibody macbook pros. Both make a high pitched noise that's found in your video when the fans hit 6000. It's just the nature of the fans and the sound the air makes when it's pushed through the grates. I imagine some units have a lower or higher frequency pitch. But on the two I got, they sound identical to yours at the high rpms. It's unavoidable. I would call it almost a whine. Your fans are fine however..they're just pushing extreme amounts of air=high pitched noise. If you heard noise at 2000rpm, then I'd be concerned. The faster they spin, the more hum/whine they produce.
Click to expand...

Thanks. Yeah like I said, if you heard it at a lower RPM, I'd be concerned if not then I wouldn't worry about it.
 
well i don't have the new mbp but on mine,
but even on mine at 4k and 6k its more of a whooooooooooooooooooooooooooooooooooooooooooooooooooooooo, with no whine.

from my experience whine means no lube.
heck if it bothers you, just go see a genius, i go to them with the most retarded questions and concerns, always helps wither good or bad news
 
Jottle said:
I have gone through two unibody macbook pros. Both make a high pitched noise that's found in your video when the fans hit 6000. It's just the nature of the fans and the sound the air makes when it's pushed through the grates. I imagine some units have a lower or higher frequency pitch. But on the two I got, they sound identical to yours at the high rpms. It's unavoidable. I would call it almost a whine. Your fans are fine however..they're just pushing extreme amounts of air=high pitched noise. If you heard noise at 2000rpm, then I'd be concerned. The faster they spin, the more hum/whine they produce.
Click to expand...


Thanks for answering :)

No, the noise only occurs when the computer is running intense graphic applications. I can't hear my fans at all when the fans are running at around x->3.5 RMP
 
benlangdon said:
well i don't have the new mbp but on mine,
but even on mine at 4k and 6k its more of a whooooooooooooooooooooooooooooooooooooooooooooooooooooooo, with no whine.

from my experience whine means no lube.
heck if it bothers you, just go see a genius, i go to them with the most retarded questions and concerns, always helps wither good or bad news
Click to expand...

I wish I could go to a genius - but the problem is that I live in Denmark and we don't have that kind of luxury as far as I know hehe. :(
 
My fans are... odd. The CPU reaches 76 degrees, and then the fans spaz to ~6000 RPM, then die to ~2000. Why is the speed never constant?
 
Okay, you guys have convinced me that it's a normal thing...

Thank you very much for the help guys. :D
 
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