G5 - Proper Temperatures?

Does anyone know what the maximum temperatures for this machine?
– Colonel – wrote on :

Hey, all,

Every once in a while in my office I get a funny smell that reminds me of burning insulation, ozone, or of that "electrical parts cleaner" spray that you use on electric motors, armatures, etc., to get them working again. (Not sure which.)

Hard to describe the smell, but when I smell it, I think "overheating electronics."

Well, I ran "Hardware Monitor Lite" on my 2.0 GHz G5 DP (Rev. B) and saw that the temperature on my Memory Controlller Heatsink was about 145 F.

(Activity Monitor doesn't show anything that, to my eye, looks unusual.)

Does anyone know what the maximum temperatures for this machine? Does 145 F for the Memory Heatsink sound excessive?

Can anyone offer me any clues on where this weird smell is coming from?

Thanks,

C

Richard Tomkins replied on :

This is a good question.

I looked around and find a lot of IC's spec's at -35 to +85 degrees C.

So, 145 degrees F is 63 degrees C, so in fact, you may be in the operating range.

It would be nice to hear from others who use the same tool what temperatures that they are observing.

rtt

"- Colonel -" nobody@redacted.invalid wrote in message news:2006010507382216807-nobody@redacted.invalid

Hey, all,

Every once in a while in my office I get a funny smell that reminds me of burning insulation, ozone, or of that "electrical parts cleaner" spray that you use on electric motors, armatures, etc., to get them working again. (Not sure which.)

Hard to describe the smell, but when I smell it, I think "overheating electronics."

Well, I ran "Hardware Monitor Lite" on my 2.0 GHz G5 DP (Rev. B) and saw that the temperature on my Memory Controlller Heatsink was about 145 F.

(Activity Monitor doesn't show anything that, to my eye, looks unusual.)

Does anyone know what the maximum temperatures for this machine? Does 145 F for the Memory Heatsink sound excessive?

Can anyone offer me any clues on where this weird smell is coming from?

Thanks,

C

Neill Massello replied on :

Colonel nobody@redacted.invalid wrote:

Does anyone know what the maximum temperatures for this machine? Does 145 F for the Memory Heatsink sound excessive?

No. My dual 2.0 (PowerMac7,3) is running above 72 C without huffing, puffing, or stinking. Hardware Monitor 3.2 shows "not applicable or unknown" for the Memory Controller Heatsink's specified limits.

Rod Smith replied on :

In article 43bd79f8_2@redacted.invalid, "Richard Tomkins" tomkinsr@redacted.invalid wrote:

This is a good question.

I looked around and find a lot of IC's spec's at -35 to +85 degrees C.

So, 145 degrees F is 63 degrees C, so in fact, you may be in the operating range.

It would be nice to hear from others who use the same tool what temperatures that they are observing.

rtt

Well, Im using the first version of the Dual 1.0 Gig G5, and my Memory Controller Heatsink generally runs between 144.9 and 145.2 F with no really serious computing going on -- Activity monitor showing CPU activity at 4 to 6%.

I have my processor performance set to "Highest" and I seldom hear the fans making much noise, although I will admit not to having very acute hearing.

My guess would be that 145 is near "normal" and nothing to worry about.

Smelling something overheating is another matter. I would open up the covers and sniff around for starters. I would also look for anything that appears to have been overheated.

– Colonel – replied on :

On 2006-01-05 18:05:39 -0500, Rod Smith old_sac_gunner@redacted.invalid said:

In article 43bd79f8_2@redacted.invalid, "Richard Tomkins" tomkinsr@redacted.invalid wrote:

This is a good question.

I looked around and find a lot of IC's spec's at -35 to +85 degrees C.

So, 145 degrees F is 63 degrees C, so in fact, you may be in the operating range.

It would be nice to hear from others who use the same tool what temperatures that they are observing.

rtt

Well, Im using the first version of the Dual 1.0 Gig G5, and my Memory Controller Heatsink generally runs between 144.9 and 145.2 F with no really serious computing going on -- Activity monitor showing CPU activity at 4 to 6%.

I have my processor performance set to "Highest" and I seldom hear the fans making much noise, although I will admit not to having very acute hearing.

My guess would be that 145 is near "normal" and nothing to worry about.

Smelling something overheating is another matter. I would open up the covers and sniff around for starters. I would also look for anything that appears to have been overheated.

Will do. Thanks for all the replies everyone.

-C

Randy Howard replied on :

Rod Smith wrote (in article old_sac_gunner-6C21B7.17053905012006@redacted.invalid):

In article 43bd79f8_2@redacted.invalid, "Richard Tomkins" tomkinsr@redacted.invalid wrote:

This is a good question.

I looked around and find a lot of IC's spec's at -35 to +85 degrees C.

So, 145 degrees F is 63 degrees C, so in fact, you may be in the operating range.

It would be nice to hear from others who use the same tool what temperatures that they are observing.

rtt

Well, Im using the first version of the Dual 1.0 Gig G5, and my Memory Controller Heatsink generally runs between 144.9 and 145.2 F with no really serious computing going on -- Activity monitor showing CPU activity at 4 to 6%.

I seem to get about 145, pretty much regardless of the workload. What is interesting, is I did an experiment where I opened a window (directly next to the chassis) on a very cold nite, and let it suck cold air straight into the front of it. The whole front of the aluminum chassis was cold to the touch, and the temperature sensor didn't change. So, I suspect it would take a LONG time to "cold soak" the chassis enough to make a dent in the proc temp sensor. So, I don't even worry about it anymore.

I have my processor performance set to "Highest" and I seldom hear the fans making much noise, although I will admit not to having very acute hearing.

The sound of a Dell running Linux nearby drowns it out anyway.

My guess would be that 145 is near "normal" and nothing to worry about.

Yes.

Smelling something overheating is another matter. I would open up the covers and sniff around for starters. I would also look for anything that appears to have been overheated.

How new is the OP's system? When new, you often smell this for a while.

Paul Sture replied on :

Colonel wrote:

On 2006-01-05 18:05:39 -0500, Rod Smith old_sac_gunner@redacted.invalid said:

In article 43bd79f8_2@redacted.invalid, "Richard Tomkins" tomkinsr@redacted.invalid wrote:

This is a good question.

I looked around and find a lot of IC's spec's at -35 to +85 degrees C.

So, 145 degrees F is 63 degrees C, so in fact, you may be in the operating range.

It would be nice to hear from others who use the same tool what temperatures that they are observing.

rtt

Well, Im using the first version of the Dual 1.0 Gig G5, and my Memory Controller Heatsink generally runs between 144.9 and 145.2 F with no really serious computing going on -- Activity monitor showing CPU activity at 4 to 6%.

I have my processor performance set to "Highest" and I seldom hear the fans making much noise, although I will admit not to having very acute hearing.

My guess would be that 145 is near "normal" and nothing to worry about.

Smelling something overheating is another matter. I would open up the covers and sniff around for starters. I would also look for anything that appears to have been overheated.

Will do. Thanks for all the replies everyone.

Dust inside the system? It can be surprising how it can build up.

void * clvrmnky() replied on :

On 05/01/2006 7:38 AM, Colonel wrote:

Every once in a while in my office I get a funny smell that reminds me of burning insulation, ozone, or of that "electrical parts cleaner" spray that you use on electric motors, armatures, etc., to get them working again. (Not sure which.)

Hard to describe the smell, but when I smell it, I think "overheating electronics."

Is this a new G5? If so, it make take some time for the "new computer smell" to burn off.

Mathue replied on :

In article 0001HW.BFE3E14100C318FDF0386550@redacted.invalid, Randy Howard randyhoward@redacted.invalid wrote:

Well, Im using the first version of the Dual 1.0 Gig G5, and my Memory Controller Heatsink generally runs between 144.9 and 145.2 oF with no really serious computing going on -- Activity monitor showing CPU activity at 4 to 6%.

I seem to get about 145, pretty much regardless of the workload. What is interesting, is I did an experiment where I opened a window (directly next to the chassis) on a very cold nite, and let it suck cold air straight into the front of it. The whole front of the aluminum chassis was cold to the touch, and the temperature sensor didn't change. So, I suspect it would take a LONG time to "cold soak" the chassis enough to make a dent in the proc temp sensor. So, I don't even worry about it anymore.

Here's what readings I get reading usenet.

CPU A Die Temperature 153.5oF CPU B Die Temperature 160.3oF Drive Bay 73.4oF Main Logic Board Backside 109.6oF Memory Controller Heatsink 151.7oF Processor Card A Ambient 71.2oF Processor Card B Ambient 72.0oF
CPU A Exhaust Fan 841 RPM CPU A Intake Fan 815 RPM CPU A Radiator Pump 1250 RPM CPU B Exhaust Fan 841 RPM CPU B Intake Fan 815 RPM CPU B Radiator Pump 1250 RPM Drive Bay 1000 RPM Main Logic Board Backside 20.0 % PCI Slot Fan 38.0 %

dfritzin replied on :

Richard Tomkins wrote:

This is a good question.

I looked around and find a lot of IC's spec's at -35 to +85 degrees C.

So, 145 degrees F is 63 degrees C, so in fact, you may be in the operating range.

It would be nice to hear from others who use the same tool what temperatures that they are observing.

rtt

This is odd. I am running the widget MiniCPUHeat on a RevA PM G5/dual 2.0 and on a iMac G5/2.0/20. On the PM, the temperature never goes above about 28 deg. C., while on the iMac, the temperature is about 135 deg C (57 deg C) when I start up the computer. Anyone know why there is this difference?

Thanks,

– Colonel – replied on :

On 2006-01-06 09:56:33 -0500, Randy Howard randyhoward@redacted.invalid said:

How new is the OP's system? When new, you often smell this for a while.

No, it's over a year old now. Oh, well, the smell hasn't returned. I'm wondering wheter it's ozone...?