The fan noise, it is driving me MAD

cyndigo

macrumors newbie
Original poster
May 26, 2012
2
0
Hello :)

I have a 1st gen 1.6G PPC G5 running 10.5.8 and have loved it since Day 1. Almost the only thing ever running is Camino with 4 or 5 tabs, but the fan noise is now driving me mad. CPU fan often goes over 5000 RPM and it's so annoying.

Screenshot of iStat readings here:
http://tinypic.com/r/zwm3aw/6

I've seen a lot of suggestions, but wondering in what order one should proceed to eliminate this problem. Don't really WANT to buy a new machine but may have to... any help much appreciated.
 
Last edited:

G51989

macrumors 68030
Feb 25, 2012
2,530
10
NYC NY/Pittsburgh PA
Go into system preferences, under energy and all that or whatever its called ( On my XP box atm lol, sorry ), turn CPU performance from automatic to highest. Should fix it.

And use tenfourFox lol
 

Intell

macrumors P6
Jan 24, 2010
18,883
373
Inside
The air intake for G5 iMacs gets clogged with dust easily. If you're brave you could take it apart and clean it.
 

Jessica Lares

macrumors G3
Oct 31, 2009
9,244
750
Near Dallas, Texas, USA
Like Intell said, try and get some of the dust out of there, even if just opening the side and cleaning the case in general if you don't want to take things apart. I use a vacuum with the little tube add-on in my machines (most say not to do it, but hey it works for me) and it makes a HUGE difference afterwards. I had a 2006 MBP which would blast its fans very, very, very loud at times and getting the dust out helped greatly.
 

drorpheus

macrumors regular
Nov 20, 2010
160
0
your cpu is much hotter than it should be, blowing air at the heatsink wont slow down the fans, you need to re apply new thermal grease to the cpu and rerun the thermal calibration for the unit, that should bring the temps down 15-20 degrees which will cause the fans to run less and should idle at like 300rpm and max out at like 3000rpm. For G5's Apple used Shin Etsu X23-7783D you'd also need ASD 2.5.8 to rerun the thermal calibration, after that it should near back to new.
 

cyndigo

macrumors newbie
Original poster
May 26, 2012
2
0
Thanks you! I should have added that I open it and blow out dust regularly. Will give all of these a try and report back.
 

justperry

macrumors G4
Aug 10, 2007
10,375
5,657
I'm a rolling stone.
Thanks you! I should have added that I open it and blow out dust regularly. Will give all of these a try and report back.
Hope you only use air from a can instead of a compressor or the like, what you do(if not using air out of can) is even worse than vacuuming.

Yes. Quickly moving particles and dust creates static electricity and it is then stored and amplified by the plastic hose and tubing.
I normally do it with a anti static cleaning brush, and if you really want to be on the safe side use an anti static wrist band.
 

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