Normal CPU Temperature? Very Hot here...

Take a look at the following thread: BekVW, "CPU Temp", 07:40am Sep 6, 2005 CDT

Hello Jonathan,

My imac G5's current temperature is 151.2 F. My fans rarely activate. I use iPulse, shareware $12.95, which has a very sophisticated iconic design.

What is this shareware (iPulse) , what does it do and how does it affect fan operation?

Mine does the same thing when im using Apps that are processor intensive. The G5 gets very hot and the fans will run non stop to keep it below 180f. Its ok, its Protecting the computer.

Try shutting down all your apps...the fna will stop as the load on the processor is reduced and it cools down.

Donesnt anybody listen to music or have sound with there games? I dont heard my fans casue ive always got sound on. I think everyone has gotten way to paranoid with this fan issue.

Your Dual G5 is also in a large tower with a lot of open air inside. Think about the iMac..Its a Tower computer cramed into a laptop.

For an accurate reading on the G5 imac, Jonathon, I'd try temperature Monitor or its big brother Hardware monitor - http://www.bresink.de/osx/index.html

Some of the others seem to be giving readings that can be out by a few degrees

Cheers

Rod

Im coming from a Viao laptop in which the fans ran ALL the time. My iMac doesnt bother me cause im used to it. I watch that G5 run at 180F and as long as it stays below that then im happy.

Its hard to determine a normal temp for the cpu. It appears that the baseline is:
cpu 140F fan 1500rpm
HD 120-130F fan 2000rpm
Syst fan 1500 rpm

Once the cpu starts to do a little work it throws off a lot of heat (Apple's nemesis) and the variable speed fans start to wind up. At some cpu temp, and I don't know what that is, the machine shuts down and at that point the fans are working their cans off and getting nowhere. Apples solution to this problem, is Intel. In the mean time they will placate you and look at your machine but they not going to spend a lot of time or money on a fix now. They got the look they wanted, and I love it, but the trade off is a little fan noise that we are going to have to live with.

Excessive fan activity is not acceptable.
I have a 20" Rev A that now has no idea how to cool itself, currently sitting here IDLE (90%) the temp if 66C and the fan pegged at 4400rpm. Regardless of what the temp is 4400 seems to be where is wants to go to. So should an idle computer in a reasonably cool room have its CPU fan blowing at its maximum, no. For people that bought the iMac BECAUSE it was billed as being whisper quiet like me, they have every right to complain about this issue.

Adam, if your fan is sitting on a speed as high as this, regardless of what you are doing with your computer, then you either have a major software (try reinstalling OSX perhaps , and make sure Virex has been uninstalled from the machine if it was ever installed) or hardware (check your capacitors) issue.

Your compter is still under warranty. What do Apple suggest the problem might be?

Cheers

Rod

Rod, I've just done a recent fresh install of Tiger+Updates, Virex has never been installed and I know what processes should & shouldn't be running and their normal loads, all of which are all fine.
I've check all the capacitors and they all look OK despite being the X type ones, however on the big-ish chip just above the G5, I assume is the graphics chip there is a clear sticky liquid all over it and soaked into the foam above it - thats not right.

I spent an hour on the phone with AppleCare after a lengthy web-chat where I discussed the various problems with my iMac: CD not ejecting/Ejecting across the desk, a white bar across the bottom of the screen, excessive fan noise and liquid on chip, was told to call an Apple Authorised Service provider and wait maybe 3 weeks while they have a look at it.

As I write (for the second time as it just shut down unexpectedly):
CPU 72C / 4400rpm