11-27-2009, 04:33 AM

Hi. I got a Mac Pro 8-core around two months ago and for the first three weeks or so I only could know it was turned on by looking at the monitors. I even got on my knees to put my ears as cose as possible to the tower to see if I could in fact hear some noise. I couldn't even when running apps like Motion.

So about after a month of getting it and till today I'm listening to this very gental but coninuous "wwuuuuuu" sound; it sounds like a very slow fan. This sound is present all the time from star up to shut down even when no apps are launched. Is this a normal sound? I mean, if I had it from the begining I would not be worried as it is quite low and not annoying but since for the frist weeks the machine made absolutley no sound I wonder if I could have done something wrong.

I have installed three aditional hardrives on the empty bays but that was before the sound started to be noticed.

Any comments?
Thanks.

11-27-2009, 03:38 PM

That is normal for Mac Pro and G5 Dual Core machines. They are whisper quiet, especially if you have selected to run processors at Automatic setting under Energy Saver > Options. Put your hand down in front of the front leg and you should fell the gentlest of a breeze at the air intake.

11-27-2009, 03:52 PM

Originally Posted by zevimetal

I have installed three aditional hardrives on the empty bays but that was before the sound started to be noticed.

Any comments?
Thanks.

Since you installed 3 additional hard drives BEFORE the fan sound was noticed...the additional heat generated by the 3 hard drives is probably increasing the internal temp. of the computer...causing the fans to occasionally run at a higher speed.

- Nick

11-28-2009, 11:26 AM

Should be quiet enough to hear yourself think. If not, be sure you are doing mindless things.