[gigabib]

Hy, that's my third remplacement macpro and this one is again make a low helicopter sound from the exhaust fan not that loud but audible.
Its strange because the sound is only comming when the ambient temp is above 26-27 c°

Did some mac pro users already notice it in quiet room ?

thanks

regards

[Mike.Bowden]

Mine never made any noise at all. But you could install smcFanControl and control the speed of your fans yourself. That would be the easiest way to do it.

[gigabib]

I've already try sms fan control, this noise completly independant of the rotation speed of the fan, it's like something is vibrating from 26-27 c°

[Mike.Bowden]

Hmm I've never heard of that.

[himself]

What are you sitting your Mac on top of? If this happened with every MacPro you've had, chances are it has something to do with the surface you're sitting it on.

[gigabib]

take a look here, i'm nt the only one.
Apple - Support - Discussions - Odd fan noises... ...
Apple - Support - Discussions - fan noise normal? ...