Mac Pro loud fan noise after 2-3 hours

Hi. I bought a Mac Pro quad 2,66 with 5 Gb ram for about a year ago. Everything works well, but after 2-3 hours the Exhaust and CPU fan starts to raise and when checking iStat it stays at about 3000 rmp for Exhaust and CPU. The noise is bad...This happens even if the Mac is not in use (any programs running) The temperature inside the Mac is low - about 30 degrees (Celcius) and the fans do not slow down until i restart the Mac. I have tried the Reset of the SMC. There is no difference after resetting the SMC....
Any suggestions??

Mac Pro, Mac OS X (10.5.4)

Posted on Aug 29, 2008 3:01 AM

18 replies

Apr 16, 2009 3:48 PM in response to cosmicbdog

How is it possible that simply removing the gfx card, and putting it back in turns off the power tool noise for about half a day? What is up with that?

I suppose whenever I need to make music I just take apart the tower and spend 20 mins unscrewing stuff. Thats why I bought a mac pro. Not so I could record sounds but so I could spend my time working out how to stop sounds coming from the very recording device and be a computer technician. Silly me... what was I thinking.

feasey

Level 1

0 points

Apr 18, 2009 6:44 AM in response to cosmicbdog

ever tried replacing the graphics card?
the fact that you moved it and all was quiet suggest it itself may indeed be faulty.

The hatter

Level 9

61,031 points

Apr 18, 2009 7:41 AM in response to feasey

The act of unplugging is one way to reset the SMC, at least it was (gotta see when Apple updates the old article to include 2009s).

http://support.apple.com/kb/HT1806 - and yes, removed reference to the 2006-7 which has a physical SMC button (and I've needed to use twice).

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Mac Pro loud fan noise after 2-3 hours