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Old Apr 11, 2006, 07:28 PM   #1
bah-bah'd
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iMac G5 hardware temperatures & monitoring

I use this dashboard widget iStats nano, which has always shown temperatures that seem off. Incoming air always reports +100 F temperature even when room temp fluxs between 55 & 90 F... I assume that the heat sensor is inside the iMac but is it really measuring incoming air temps so far inside that the air temp is already normalized?

My machine pretty much reports this always, no matter what the environment and usage load... Is this normal?

CPU 160
GPU 150
HD 120
AIR 100

Edit: (I can't believe I forgot) 20" iMac G5 w/ iSight

Last edited by bah-bah'd; Apr 11, 2006 at 07:35 PM.
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Old Apr 11, 2006, 07:32 PM   #2
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Which revision iMac G5 do you have, and what size is it?

The one in my sig usually measures:
CPU - 160 F
HDD - 130 F

I don't know where the other temps are coming from. When I downloaded iStat nano, those were the only two temperatures it gave me.
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Old Apr 11, 2006, 07:41 PM   #3
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I would say those temperatures are perfectly normal (just ignore the "Air temp, that is weird).
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Old Apr 11, 2006, 10:35 PM   #4
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Quote:
Originally Posted by bah-bah'd
I use this dashboard widget iStats nano, which has always shown temperatures that seem off. Incoming air always reports +100 F temperature even when room temp fluxs between 55 & 90 F... I assume that the heat sensor is inside the iMac but is it really measuring incoming air temps so far inside that the air temp is already normalized?

My machine pretty much reports this always, no matter what the environment and usage load... Is this normal?

CPU 160
GPU 150
HD 120
AIR 100

Edit: (I can't believe I forgot) 20" iMac G5 w/ iSight
wow, those numbers seem a smidge high. especially the CPU... i was worried about my CPU over heating once so i told Apple and the dude told me about 150˚ is about all. are u sure ur system still works? i'd report this to Apple.
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Old Apr 11, 2006, 10:36 PM   #5
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I just got.

CPU 150 F
HD 129 F

170 F is normal for 100% CPU load and I believe shut off is at 185 F.
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Old Apr 12, 2006, 02:56 AM   #6
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Aaarrgh, why can't everyone use Celsius so I can understand your numbers?

I use X-Resource Graph for my stats, which usually reports my 20" iMac CPU somewhere around 62-66C (approx 143-151 F) and the 17" iMac around 68-73C (approx 154-163 F). Both are 2.0GHz revision B iMacs.
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Old Apr 12, 2006, 04:24 AM   #7
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Gets about 74C when you push my iMac (no not literally off the desk) but it has shut down on me once during a Halo session
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Old Apr 12, 2006, 09:15 AM   #8
Platform
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CPU = 65c
GPU = 55c
Air = 36c
HD = 46c
GPU Ambient = 56c
Mem controller ambient = 62c
Optical drive = 39c
Mem controller = 75c

CPU Fan = ~1400 rpm
HD = ~1900 rpm
Optical drive = ~1600 rpm

Yes please use metric units....

iMac in sig
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Old Apr 12, 2006, 09:25 AM   #9
mjstew33
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17" iMac G5 1.9GHz

CPU - 145º F
HD - 120º F
GPU - 167º F
Optical Drive - 105º F
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Old Apr 12, 2006, 09:26 AM   #10
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Quote:
Originally Posted by dietcokevanilla
Aaarrgh, why can't everyone use Celsius so I can understand your numbers?
why doesn't everyone use Kelvin so i can understand your numbers T____T :P
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Old Apr 12, 2006, 10:31 AM   #11
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Quote:
Originally Posted by eva01
why doesn't everyone use Kelvin so i can understand your numbers T____T :P
I can understand Kelvin more than I can understand Celsius.
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Old Apr 12, 2006, 11:32 AM   #12
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It is STANDARD for my CPU to idle around 170 F....and when it's running under a full load, it consistently approaches 200.

It makes me so uncomfortable (considering I had a rev.A that fried) that I always run the system with the processor on the reduced setting.

Grrr.
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Old Apr 12, 2006, 11:33 AM   #13
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Quote:
Originally Posted by Chasealicious
It is STANDARD for my CPU to idle around 170 F....and when it's running under a full load, it consistently approaches 200.

It makes me so uncomfortable (considering I had a rev.A that fried) that I always run the system with the processor on the reduced setting.

Grrr.
I find Automatic just fine. It starts to get noisy around 50-60% usage.
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Old Apr 12, 2006, 03:22 PM   #14
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Quote:
Originally Posted by Chasealicious
It is STANDARD for my CPU to idle around 170 F....and when it's running under a full load, it consistently approaches 200.

It makes me so uncomfortable (considering I had a rev.A that fried) that I always run the system with the processor on the reduced setting.

Grrr.
200 F seems to be too high. I surprised your computer hasn't shut off by that point. Have you tried another temp monitor to make sure it is accurate?
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Old Apr 13, 2006, 03:42 PM   #15
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Sometimes my iMac heats up my room when it gets cold...The highest temp I've ever pushed it was 170-171?F, and it was cookin!!
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Old Apr 13, 2006, 03:43 PM   #16
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Quote:
Originally Posted by Chasealicious
It is STANDARD for my CPU to idle around 170 F....and when it's running under a full load, it consistently approaches 200.

It makes me so uncomfortable (considering I had a rev.A that fried) that I always run the system with the processor on the reduced setting.

Grrr.
Somethings wrong with your computer...unless you are using your computer in the desert at noon.
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