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G5 DP heat question

Message #1 - Posted 2006/08/15 - Jesse

Hi guys,

What is the normal temp range for a G5 running at a room temperature of 76 deg F ? With the heat wave a few weeks ago, I hardly ever heard the fans turn on above what they do on starup.

Almost seems like the temp sensors where not responding. I went from high cpu to low cpu setting to lower the temp. Mac is slower, but does not freeze up.

Previously the fans would kick in strong when I did some video editing in FCP with high cpu setting. Mac felt ok and temps were never as high. (25 - 30 deg C)

Mac has at least 8" from wall, under desk. I used can of air to clean out case, etc. Now on automactic setting, seems to turn fans on more, but temp seems high to me.

Any info / suggestions apprecieated.

Thanks in advance

Jesse

G5 temp on low cpu setting:

Applications: Thoth, GraphicConverter,and iTunes. 5 widgets (including sys stat & cpu heat)

43.0 - 45.5 deg C. (apps running) last month 90+ deg F & humid

41.0 - 42.5 deg C. (apps. running) now 76 deg F & less humid

40.5 deg C. (startup)

_______________________
G5 DP 1.8 Ghz / 2GB RAM using 10.4.7 OSX
80 & 160 GB Maxtor SATA HD

ROM version 5.1.8f7
_______________________

Jesse

PowerMac G5 1.8 DP
iMac G3 400
iBook G3 466SE
Bebox K6-2 500

Message #2 - Posted 2006/08/15 - Silicon Sam

Jesse wrote:

Hi guys,

What is the normal temp range for a G5 running at a room temperature of 76 deg F ? With the heat wave a few weeks ago, I hardly ever heard the fans turn on above what they do on starup.

Almost seems like the temp sensors where not responding. I went from high cpu to low cpu setting to lower the temp. Mac is slower, but does not freeze up.

Previously the fans would kick in strong when I did some video editing in FCP with high cpu setting. Mac felt ok and temps were never as high. (25 - 30 deg C)

Mac has at least 8" from wall, under desk. I used can of air to clean out case, etc. Now on automactic setting, seems to turn fans on more, but temp seems high to me.

Any info / suggestions apprecieated.

Thanks in advance

Jesse

G5 temp on low cpu setting:

Applications: Thoth, GraphicConverter,and iTunes. 5 widgets (including sys stat & cpu heat)

43.0 - 45.5 deg C. (apps running) last month 90+ deg F & humid

41.0 - 42.5 deg C. (apps. running) now 76 deg F & less humid

40.5 deg C. (startup)

_______________________
G5 DP 1.8 Ghz / 2GB RAM using 10.4.7 OSX
80 & 160 GB Maxtor SATA HD

ROM version 5.1.8f7
_______________________

--
Jesse

PowerMac G5 1.8 DP
iMac G3 400
iBook G3 466SE
Bebox K6-2 500

I have the DP 1.8 as well. Do you have Temerature Monitor program from Apple? Which of the 9 sensors are you getting your readings from? Can't help you if I don't which readings your numbers are coming from....

CPU Temp? Memory Temp? Motherboard?, etc, etc.... If 't the CPU Die temperature, I'd say you are running lower than me.

Raymond

Message #3 - Posted 2006/08/15 - Stephen Adams

Jesse <starlets@smurf_kiki-productions.com> writes:

Hi guys,

What is the normal temp range for a G5 running at a room temperature of 76 deg F ? With the heat wave a few weeks ago, I hardly ever heard the fans turn on above what they do on starup.

Almost seems like the temp sensors where not responding. I went from high cpu to low cpu setting to lower the temp. Mac is slower, but does not freeze up.

Try resetting the NVRAM and zapping the PRAM. That takes care of fan issues on my dual G4. From time to time the fans seem to not respond properly - staying on high when not needed, not coming on when needed. By zapping the PRAM and resetting the NVRAM, they return to normal operation.

The fan issue usually occurs when the system has been running a long time and has been asleep for a long period. A reboot doesn't seem to fix it (it's like it 'forgets' how to adjust the fans), but the PRAM/ NVRAM reset fixes it.

-Stephen

Space Age Cybernomad Stephen Adams malchus842SP@AMgmail.com (remove SPAM to reply)

Message #4 - Posted 2006/08/15 - Jesse

Previously, Silicon Sam wrote:

<self-snips>

Jesse wrote:

Hi guys,

What is the normal temp range for a G5 running at a room temperature of 76 deg F ? With the heat wave a few weeks ago, I hardly ever heard the fans turn on above what they do on starup.

Any info / suggestions apprecieated.

Thanks in advance

Jesse

G5 temp on low cpu setting:

Applications: Thoth, GraphicConverter,and iTunes. 5 widgets (including sys stat & cpu heat)

43.0 - 45.5 deg C. (apps running) last month 90+ deg F & humid

41.0 - 42.5 deg C. (apps. running) now 76 deg F & less humid

40.5 deg C. (startup)

I have the DP 1.8 as well. Do you have Temerature Monitor program from Apple? Which of the 9 sensors are you getting your readings from? Can't help you if I don't which readings your numbers are coming from....

CPU Temp? Memory Temp? Motherboard?, etc, etc.... If 't the CPU Die temperature, I'd say you are running lower than me.

Raymond

---Hi Raymond,

I don't have the temperature monitor program from Apple. Is that part of the stuff in the utility files or is that a seperate download ?

I was actually just going by the little CPU heat widget. But I have had that since they came out with Tiger. Before It always measured 25-30 deg C.

Let me see if I find the program and compare it to the cpu heat widget readings.

Jesse

PowerMac G5 1.8 DP
iMac G3 400
iBook G3 466SE
Bebox K6-2 500

Message #5 - Posted 2006/08/15 - Jesse

Previously, Stephen Adams wrote:

Jesse <starlets@smurf_kiki-productions.com> writes:

Hi guys,

What is the normal temp range for a G5 running at a room temperature of 76 deg F ? With the heat wave a few weeks ago, I hardly ever heard the fans turn on above what they do on starup.

Almost seems like the temp sensors where not responding. I went from high cpu to low cpu setting to lower the temp. Mac is slower, but does not freeze up.

Try resetting the NVRAM and zapping the PRAM. That takes care of fan issues on my dual G4. From time to time the fans seem to not respond properly - staying on high when not needed, not coming on when needed. By zapping the PRAM and resetting the NVRAM, they return to normal operation.

The fan issue usually occurs when the system has been running a long time and has been asleep for a long period. A reboot doesn't seem to fix it (it's like it 'forgets' how to adjust the fans), but the PRAM/ NVRAM reset fixes it.

-Stephen

---Hi Stephen,

I will try these two fixes. Hopefully they will help. I think maybe once I might have left the G5 on for a couple of hours in sleep on a hot day. That might have messed things up.

thanks

Jesse

PowerMac G5 1.8 DP
iMac G3 400
iBook G3 466SE
Bebox K6-2 500

Message #6 - Posted 2006/08/15 - Silicon Sam

Jesse wrote:

Previously, Silicon Sam wrote:

<self-snips>

Jesse wrote:

Hi guys,

What is the normal temp range for a G5 running at a room temperature of 76 deg F ? With the heat wave a few weeks ago, I hardly ever heard the fans turn on above what they do on starup.

Any info / suggestions apprecieated.

Thanks in advance

Jesse

G5 temp on low cpu setting:

Applications: Thoth, GraphicConverter,and iTunes. 5 widgets (including sys stat & cpu heat)

43.0 - 45.5 deg C. (apps running) last month 90+ deg F & humid

41.0 - 42.5 deg C. (apps. running) now 76 deg F & less humid

40.5 deg C. (startup)

I have the DP 1.8 as well. Do you have Temerature Monitor program from Apple? Which of the 9 sensors are you getting your readings from? Can't help you if I don't which readings your numbers are coming from....

CPU Temp? Memory Temp? Motherboard?, etc, etc.... If 't the CPU Die temperature, I'd say you are running lower than me.

Raymond

---Hi Raymond,

I don't have the temperature monitor program from Apple. Is that part of the stuff in the utility files or is that a seperate download ?

I was actually just going by the little CPU heat widget. But I have had that since they came out with Tiger. Before It always measured 25-30 deg C.

Let me see if I find the program and compare it to the cpu heat widget readings.

Try this link.....

http://www.versiontracker.com/dyn/moreinfo/macosx/19994

Raymond

Message #7 - Posted 2006/08/16 - Jesse

Previously, Jesse wrote:

---Here is more info:

I got the Hardware monitor program, information is below. I tried to do the zapping the PRAM. I think I didn't do it right.

Pressed (apple key) command-option-P-R as I turned on Mac. I would hear a revving sound, but no " dongs ". After several, I just let go and the Mac started up. (no clock reset, looks the same)

Does it take a long time and then give you gray screen, start-up screen ? Was I supposed to press and release right away ? I checked Apple Knowledgebase but it only gave key combination without any notes on how long to hold or if I needed to let go.

Thanks for help. I'm hoping the reset will work. Just need to figure it out properly.

_______________________

G5 after startup with only monitor program running :

CPU A Die Temperature: 36.6 C
CPU B Die Temperature: 37.5 C
Drive Bay: 27.0 C Main Logic Board Air Inlet: 27.0 C
Main Logic Board Ambient: 30.2 C
Main Logic Board Backside: 34.4 C
Memory Controller Heatsink: 41.8 C
Processor Card A Ambient: 28.0 C
Processor Card B Ambient: 28.5 C
SMART Disk Maxtor 6Y080M0 (Y2AGXLCE): 35.0 C
SMART Disk Maxtor 6Y160M0 (Y46PJ9TE): 29.0 C

______________________

G5 DP 1.8 Ghz / 2GB RAM using 10.4.7 OSX
80 & 160 GB Maxtor SATA HD

ROM version 5.1.8f7
______________________

Jesse

PowerMac G5 1.8 DP
iMac G3 400
iBook G3 466SE
Bebox K6-2 500

Message #8 - Posted 2006/08/17 - Stephen Adams

Jesse <starlets@smurf_kiki-productions.com> writes:

Previously, Jesse wrote:

---Here is more info:

I got the Hardware monitor program, information is below. I tried to do the zapping the PRAM. I think I didn't do it right.

Pressed (apple key) command-option-P-R as I turned on Mac. I would hear a revving sound, but no " dongs ". After several, I just let go and the Mac started up. (no clock reset, looks the same)

Turn it on then immediately press the keys. Hold them until it 'gongs' several times (3 or 4). That should do it. If you aren't hearing the gongs - check to make sure your system speakers are working.

Thanks for help. I'm hoping the reset will work. Just need to figure it out properly.

Try resetting the NVRAM - press CMD-OPT-O-F to boot to open firmware. When you see the OF screen, release the keys. Then type 'reset-nvram' and press enter then 'reset-all' and press enter.

See: http://docs.info.apple.com/article.html?artnum=2238 And: http://docs.info.apple.com/article.html?artnum=42642

After reboot, shutdown and retry zapping the PRAM.

-Stephen

Space Age Cybernomad Stephen Adams malchus842SP@AMgmail.com (remove SPAM to reply)

Message #9 - Posted 2006/08/16 - Silicon Sam

Jesse wrote:

Previously, Jesse wrote:

G5 after startup with only monitor program running :

CPU A Die Temperature: 36.6 C
CPU B Die Temperature: 37.5 C
Drive Bay: 27.0 C Main Logic Board Air Inlet: 27.0 C
Main Logic Board Ambient: 30.2 C
Main Logic Board Backside: 34.4 C
Memory Controller Heatsink: 41.8 C
Processor Card A Ambient: 28.0 C
Processor Card B Ambient: 28.5 C
SMART Disk Maxtor 6Y080M0 (Y2AGXLCE): 35.0 C
SMART Disk Maxtor 6Y160M0 (Y46PJ9TE): 29.0 C

______________________

G5 DP 1.8 Ghz / 2GB RAM using 10.4.7 OSX
80 & 160 GB Maxtor SATA HD

ROM version 5.1.8f7
______________________

--
Jesse

Heck, your machine is running cooler than mine in some cases. Personally I wouldn't worry about it at all.

Raymond

Message #10 - Posted 2006/08/18 - Jesse

Previously, Silicon Sam wrote:

Jesse wrote:

Previously, Jesse wrote:

G5 after startup with only monitor program running :

CPU A Die Temperature: 36.6 C
CPU B Die Temperature: 37.5 C
Drive Bay: 27.0 C Main Logic Board Air Inlet: 27.0 C
Main Logic Board Ambient: 30.2 C
Main Logic Board Backside: 34.4 C
Memory Controller Heatsink: 41.8 C
Processor Card A Ambient: 28.0 C
Processor Card B Ambient: 28.5 C
SMART Disk Maxtor 6Y080M0 (Y2AGXLCE): 35.0 C
SMART Disk Maxtor 6Y160M0 (Y46PJ9TE): 29.0 C

<snips>

Heck, your machine is running cooler than mine in some cases. Personally I wouldn't worry about it at all.

Raymond

---Thanks for reassurance on the temp. I will keep it on automatic setting for now until it the weather gets cooler.

I was able to perform the PRAM/NVRAM trick Stephen recommended, so hopefully the fans will turn on quicker.

BTW: Only second hardware problem I've ever had with a Mac. First one was the loose wiring from the board to the screen on my Mac Plus.

It worked but if you bumped it hard the screen went away. A slap on the side worked everytime.

Jesse

PowerMac G5 1.8 DP
iMac G3 400
iBook G3 466SE
Bebox K6-2 500

Message #11 - Posted 2006/08/18 - Silicon Sam

BTW: Only second hardware problem I've ever had with a Mac. First one was the loose wiring from the board to the screen on my Mac Plus.

It worked but if you bumped it hard the screen went away. A slap on the side worked everytime.

On the Plus, that was more than likely a cold solder joint. I made my living fixing them all-in-one Mac back in the 90's. Went through hundreds upon hundreds of power supply repair kits, fixing floppy drives, etc.... Not like today where it's cheaper to replace than repair. I fixed several hundred floppy drives for $79 a whack. Can't do that anymore.

Raymond

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