Re: QuadG5 CPU A Runs Hot
> My temps run about 65 to 75 most of the time. > We had a heat wave two years back and the temps in the condo got to > 115 F. That made it leak. Ugh. Glad to have central A/C here in the foothills. > Well my Dual 2.7 power draw may be due to the 5 2TB internal HDD's , > they keep the fans busy, > plus 2 2TB externals and a 9800 Pro graphics card. My Panasonic LCS > has two pumps also. That would do it. Mine just has two 500GB HDs and a 7800GT. -- personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckai...@floodgap.com -- lp0 reported invalid error status (on fire, eh?) -- Linux 1.1.62 --- -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: QuadG5 CPU A Runs Hot
On Apr 16, 2012, at 12:47 PM, Cameron Kaiser wrote: As I stated the ambient is also very important here, plus never crowd the back of one of the "Stanley Steamers" (water pumpers) too lose to a wall they need breathing room. Good point. Mine used to be crammed into a corner, but in my new house I have it pointing into the middle of the room so it can ventilate freely. Ambient in the room varies between 65 and 80 F, depending on the time of year. My temps run about 65 to 75 most of the time. We had a heat wave two years back and the temps in the condo got to 115 F. That made it leak. It caused me to repair and refill my Delphi LCS and disassemble the power supply to neutralize the coolant I also had all the power supply pieces re-plated, Two months later I installed a Panasonic unit and sold the Delphi, Also at idle mine draws 250 Watts, when burning 2 or more DVD's at a time I'm at 550 watts. Holy power draw, Batman! My quad is somewhere between 170 and 250W, but it is usually in Reduced mode, and I only crank it up when I'm compiling stuff. Well my Dual 2.7 power draw may be due to the 5 2TB internal HDD's , they keep the fans busy, plus 2 2TB externals and a 9800 Pro graphics card. My Panasonic LCS has two pumps also. John Carmonne Placentia CA 92870 From iMac Core Duo 2.0 -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: QuadG5 CPU A Runs Hot
> > > My Dual 2.7 with either the Delphi or Panasonic LCS at idle is about > > > 155 F equally between A and B. However they will vary 30 F between > > > CPU's and top temps at 185 to 200 when loaded. > > > > That seems really high, but I've never used a dual 2.7, so maybe their > > higher clock speed == more heat. > > As I stated the ambient is also very important here, plus never crowd the > back of one of the "Stanley Steamers" (water pumpers) too lose to a wall > they need breathing room. Good point. Mine used to be crammed into a corner, but in my new house I have it pointing into the middle of the room so it can ventilate freely. Ambient in the room varies between 65 and 80 F, depending on the time of year. > Also at idle mine draws 250 Watts, when burning 2 or more DVD's at a time > I'm at 550 watts. Holy power draw, Batman! My quad is somewhere between 170 and 250W, but it is usually in Reduced mode, and I only crank it up when I'm compiling stuff. > The Quads had two Delphi units, one with a single pump and a dual pump, the > duals did have some problems. I've only seen one Panasonic for the Quad. My regular unit has a Panasonic. I haven't looked at the spare quad other than when I inspected it prior to storage. Pretty sure my folks' dual 2.5 is a Delphi, but (knock on wood) it's done pretty well since they got it. -- personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckai...@floodgap.com -- Shell scripting: the ultimate open source software. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: QuadG5 CPU A Runs Hot
> > I ran the thermal calibration - it failed saying the CPUs (both of > > them) have exceeded the maximum temperature. > > I question the reliability of the ASD's reports, with the Duals the > ASD 2.5.7 and 2.5.8 will give different out comes on the tests a lot > of times the 2.5.8 will almost always fail where the 2.5.7 most times > tells you you don't need to calibrate. The Quad uses ASD 2.6.3 and may > also give bad info. I do know however that too much paste on the die's > will make them over heat. Or, possibly, air trapping under the paste? Still, I would consider the error message a bad sign. > > I remember seeing the fluid replacement blogs as well - I probably > > have links to those somewhere. But I remember them all being the > > Delphi systems. Nobody seems to have had the need to do the > > Panasonic ones. > > I don't see why the basic method wouldn't work for the Panasonic. > however I've never seen a Panasonic give any problem. Neither have I. But the OP may be unlucky enough to be one of the rare ones that does. :( -- personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckai...@floodgap.com -- MARXISTS SCHEME CLASSLESS SMALLTALK! -- Arch Robison --- -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: QuadG5 CPU A Runs Hot
On Apr 16, 2012, at 7:09 AM, Michael Baudais wrote: I ran the thermal calibration - it failed saying the CPUs (both of them) have exceeded the maximum temperature. I question the reliability of the ASD's reports, with the Duals the ASD 2.5.7 and 2.5.8 will give different out comes on the tests a lot of times the 2.5.8 will almost always fail where the 2.5.7 most times tells you you don't need to calibrate. The Quad uses ASD 2.6.3 and may also give bad info. I do know however that too much paste on the die's will make them over heat. The machine is totally clean - no liquid, no stains, no residue anywhere. The seals seem solid. I don't believe that it's been "leaking" as in dripping out. Could it evaporate or change its properties such that it doesn't cool as well? It can evaporate if there is an indication of any corrosion. Could the pump say it's spinning but it really isn't pumping well (broken impeller blades or something like that)? That's possible, I remember seeing the fluid replacement blogs as well - I probably have links to those somewhere. But I remember them all being the Delphi systems. Nobody seems to have had the need to do the Panasonic ones. I don't see why the basic method wouldn't work for the Panasonic. however I've never seen a Panasonic give any problem. http://www.xlr8yourmac.com/systems/G5_CoolantLeak_Repair/G5_CoolantLeak_Repair_p1.html#storytop John Carmonne Placentia CA 92870 From iMac Core Duo 2.0 -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: QuadG5 CPU A Runs Hot
I ran the thermal calibration - it failed saying the CPUs (both of them) have exceeded the maximum temperature. The machine is totally clean - no liquid, no stains, no residue anywhere. The seals seem solid. I don't believe that it's been "leaking" as in dripping out. Could it evaporate or change its properties such that it doesn't cool as well? Could the pump say it's spinning but it really isn't pumping well (broken impeller blades or something like that)? I remember seeing the fluid replacement blogs as well - I probably have links to those somewhere. But I remember them all being the Delphi systems. Nobody seems to have had the need to do the Panasonic ones. Thanks, Mike -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: QuadG5 CPU A Runs Hot
On Apr 11, 2012, at 1:55 PM, Cameron Kaiser wrote: >>> CPU A is indeed normally hotter than CPU B. The typical differential >>> is >>> around 10 degrees Centigrade, at least on the units I've seen, but not >>> significantly higher than that. >> >> My Dual 2.7 with either the Delphi or Panasonic LCS at idle is about >> 155 F equally between A and B. However they will vary 30 F between >> CPU's and top temps at 185 to 200 when loaded. > > That seems really high, but I've never used a dual 2.7, so maybe their > higher clock speed == more heat. > As I stated the ambient is also very important here, plus never crowd the back of one of the "Stanley Steamers" (water pumpers) too lose to a wall they need breathing room. Apple even states the temp of 190 to 200 F is OK, but remember that's not 24/7. Also at idle mine draws 250 Watts, when burning 2 or more DVD's at a time I'm at 550 watts. The Quads had two Delphi units, one with a single pump and a dual pump, the duals did have some problems. I've only seen one Panasonic for the Quad. John Carmonne Yorba Linda CA 92886 USA MacPro 2.66 Quad Nehalem -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: QuadG5 CPU A Runs Hot
On Apr 11, 2012, at 8:01 AM, Baudais Michael wrote: Hmmm, maybe I just noticed it after that cleaning because I was checking to see if the temperature dropped... Other notes: - both pumps are running at 2436 rpm right now - Temps are 45.6, 45.3, 33.6, 32.6 C - Fans are at 2162, 2162 (CPU Exhaust) - I have not run thermal calibration - I have the installer, but I don't have a blank external drive I can sacrifice at the moment. Has anyone figured out how to use these tools with a disk image or something? You can do it with a USB thumb drive - The temps have risen slowly over the years since 2005 - I started running it full-time on reduced power because I had a couple of thermal shutdown events. This was about a year after replacing the thermal grease. Might be time for another re-greasing? The original grease was dry and cracked, so re-doing it was a good idea at the time, but maybe I didn't get good stuff... - OK, I started an mp4 conversion, and switched to Automatic in Energy Saver Options - after 30s with all 4 CPUs around 90% the stats are: - both pumps are running at 3600 rpm - Temps are 92.6, 90.9, 42.8, 41.0 - Fans are at 3200 Yeah, 90C is too high, so I quickly dropped it back to reduced performance before it shut down. Still encoding, but temps are now 61.8, 61.3, 41.3, 39.3. That temp 198 F, is not too high in my experience when the machine is loaded, plus the ambient temp is another very important factor. 65 F is best. So 50C sounds like too high a difference, right? Is it possible to have no leak in the cooling system of a CPU, but have some kind of blockage in the cooling system? Did you see any coloration in the floor of the inner case or dampness on the diaper under the CPU? I still need to try the power-off test to get the initial CPU temp diff. But given how quickly the temp changes, I doubt I can get the software started quickly enough to see the initial temp. It takes a minute or so to get logged in... If anyone is interested, I uploaded some photos of the thermal grease work to flickr at: http://www.flickr.com/photos/mbaudais01/sets/72157629428579008/ (Haven't really used flickr much so let me know if that isn't visible to you) Thanks, Mike John Carmonne Placentia CA 92870 From iMac Core Duo 2.0 -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: QuadG5 CPU A Runs Hot
> > CPU A is indeed normally hotter than CPU B. The typical differential > > is > > around 10 degrees Centigrade, at least on the units I've seen, but not > > significantly higher than that. > > My Dual 2.7 with either the Delphi or Panasonic LCS at idle is about > 155 F equally between A and B. However they will vary 30 F between > CPU's and top temps at 185 to 200 when loaded. That seems really high, but I've never used a dual 2.7, so maybe their higher clock speed == more heat. -- personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckai...@floodgap.com -- MOVIE IDEA: Raiders of the Lost E-mail Signature --- -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: QuadG5 CPU A Runs Hot
[Charset ISO-8859-1 unsupported, filtering to ASCII...] > Hmmm, maybe I just noticed it after that cleaning because I was > checking to see if the temperature dropped... > > Other notes: > - both pumps are running at 2436 rpm right now > - Temps are 45.6, 45.3, 33.6, 32.6 C This is already too wide of a spread IMHO. > - Fans are at 2162, 2162 (CPU Exhaust) > - I have not run thermal calibration - I have the installer, but I > don't have a blank external drive I can sacrifice at the moment. Has > anyone figured out how to use these tools with a disk image or > something? I haven't had to do this myself, but I think you can simply run it off the Apple Hardware Test image for the Late 2005 G5 series. > - The temps have risen slowly over the years since 2005 - I started > running it full-time on reduced power because I had a couple of > thermal shutdown events. This was about a year after replacing the > thermal grease. Might be time for another re-greasing? The original > grease was dry and cracked, so re-doing it was a good idea at the > time, but maybe I didn't get good stuff... Maybe, but mine has been going just super on the original heat compound, unless whatever you put in there the first time was really pants stuff :) > - OK, I started an mp4 conversion, and switched to Automatic in Energy > Saver Options - after 30s with all 4 CPUs around 90% the stats are: > - both pumps are running at 3600 rpm > - Temps are 92.6, 90.9, 42.8, 41.0 Yes, this is definitely wrong. Even full-tilt my quad doesn't exceed much over 55 C. > So 50C sounds like too high a difference, right? Is it possible to > have no leak in the cooling system of a CPU, but have some kind of > blockage in the cooling system? It's certainly possible, but you still have too many variables. The first thing I would do is run thermal recalibration and make sure that the sensors are running in expected ranges. If you can't trust the sensors, all else is fruitless. Failing that, check the grease (recalibrate afterwards), look for leaks. I don't know how to repair a blockage, though, if that's truly the cause. -- personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckai...@floodgap.com -- BOND THEME NOW PLAYING: "Moonraker" -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: QuadG5 CPU A Runs Hot
Hmmm, maybe I just noticed it after that cleaning because I was checking to see if the temperature dropped... Other notes: - both pumps are running at 2436 rpm right now - Temps are 45.6, 45.3, 33.6, 32.6 C - Fans are at 2162, 2162 (CPU Exhaust) - I have not run thermal calibration - I have the installer, but I don't have a blank external drive I can sacrifice at the moment. Has anyone figured out how to use these tools with a disk image or something? - The temps have risen slowly over the years since 2005 - I started running it full-time on reduced power because I had a couple of thermal shutdown events. This was about a year after replacing the thermal grease. Might be time for another re-greasing? The original grease was dry and cracked, so re-doing it was a good idea at the time, but maybe I didn't get good stuff... - OK, I started an mp4 conversion, and switched to Automatic in Energy Saver Options - after 30s with all 4 CPUs around 90% the stats are: - both pumps are running at 3600 rpm - Temps are 92.6, 90.9, 42.8, 41.0 - Fans are at 3200 Yeah, 90C is too high, so I quickly dropped it back to reduced performance before it shut down. Still encoding, but temps are now 61.8, 61.3, 41.3, 39.3. So 50C sounds like too high a difference, right? Is it possible to have no leak in the cooling system of a CPU, but have some kind of blockage in the cooling system? I still need to try the power-off test to get the initial CPU temp diff. But given how quickly the temp changes, I doubt I can get the software started quickly enough to see the initial temp. It takes a minute or so to get logged in... If anyone is interested, I uploaded some photos of the thermal grease work to flickr at: http://www.flickr.com/photos/mbaudais01/sets/72157629428579008/ (Haven't really used flickr much so let me know if that isn't visible to you) Thanks, Mike On 2012-Apr-11, at 7:25 AM, Cameron Kaiser wrote: Wouldn't it make sense for CPU A to be hotter than CPU B? I don't know much about hardware, but if Mac OS X (or any PowerPC OS acutally) uses threading, isn't it possible that frequently used threads are allocated to CPU A? Or, maybe more sensible, CPU A just happens to get most threads? CPU A is indeed normally hotter than CPU B. The typical differential is around 10 degrees Centigrade, at least on the units I've seen, but not significantly higher than that. -- personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckai...@floodgap.com -- It's not Camelot, but it's not Cleveland either. -- Boston mayor Kevin White -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: QuadG5 CPU A Runs Hot
On Apr 11, 2012, at 6:25 AM, Cameron Kaiser wrote: Wouldn't it make sense for CPU A to be hotter than CPU B? I don't know much about hardware, but if Mac OS X (or any PowerPC OS acutally) uses threading, isn't it possible that frequently used threads are allocated to CPU A? Or, maybe more sensible, CPU A just happens to get most threads? CPU A is indeed normally hotter than CPU B. The typical differential is around 10 degrees Centigrade, at least on the units I've seen, but not significantly higher than that. My Dual 2.7 with either the Delphi or Panasonic LCS at idle is about 155 F equally between A and B. However they will vary 30 F between CPU's and top temps at 185 to 200 when loaded. John Carmonne Placentia CA 92870 From iMac Core Duo 2.0 -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: QuadG5 CPU A Runs Hot
> Wouldn't it make sense for CPU A to be hotter than CPU B? I don't know > much about hardware, but if Mac OS X (or any PowerPC OS acutally) uses > threading, isn't it possible that frequently used threads are > allocated to CPU A? > Or, maybe more sensible, CPU A just happens to get most threads? CPU A is indeed normally hotter than CPU B. The typical differential is around 10 degrees Centigrade, at least on the units I've seen, but not significantly higher than that. -- personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckai...@floodgap.com -- It's not Camelot, but it's not Cleveland either. -- Boston mayor Kevin White -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: QuadG5 CPU A Runs Hot
Hi all! Wouldn't it make sense for CPU A to be hotter than CPU B? I don't know much about hardware, but if Mac OS X (or any PowerPC OS acutally) uses threading, isn't it possible that frequently used threads are allocated to CPU A? Or, maybe more sensible, CPU A just happens to get most threads? Greetings, Eelco. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: QuadG5 CPU A Runs Hot
Sent from an iPhone, but is it mine? On Apr 10, 2012, at 5:45 PM, Baudais Michael wrote: . > 3) I removed the CPUs and cooling systems, and replaced the thermal paste on > the CPUs. That helped dramatically - both CPUs dropped 20C. But, A is still > hotter than B by the same amount. > 4) I checked the cooling system thoroughly - no leaks evident. > 5) For the last year I've been running in reduced power mode. Which isn't > too bad performance-wise, but I'd love to get my full performance back. The sensors used are not terribly accurate. It's possible both CPUs are running at the same temp. I don't know how far off they can get. Try bringing up your temperature reporting program, put the computer to sleep, wait at least 2 hours (overnight would be best), wake it up and quickly check the temp on both CPUs. If the one is reporting 20 degrees higher it's the sensor. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: QuadG5 CPU A Runs Hot
> 1) I took my QuadG5 out to the garage one nice warm Saturday and used > compressed air to blow out all the dust. Yes, this may have been a > bad idea... > 2) Since then, CPU A has consistently run 10-20 degrees Celsius > hotter than CPU B. Over time, both CPU temps started to climb. > 3) I removed the CPUs and cooling systems, and replaced the thermal > paste on the CPUs. That helped dramatically - both CPUs dropped 20C. > But, A is still hotter than B by the same amount. > 4) I checked the cooling system thoroughly - no leaks evident. > 5) For the last year I've been running in reduced power mode. Which > isn't too bad performance-wise, but I'd love to get my full > performance back. Did you run thermal calibration again after you changed the thermal paste? On my quad right now, CPUA1 49.5 CPUA2 46.3 CPUB1 39.8 CPUB2 40.4 in reduced power mode (it's quieter, uses less power and probably extends the life of the machine). -- personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckai...@floodgap.com -- "have do you a weak flatulence?" -- Babelfish Dutch translation -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: QuadG5 CPU A Runs Hot
On Apr 10, 2012, at 5:45 PM, Baudais Michael wrote: > Hi all, > > I'm looking for some ideas on how to address a problem with my Quad G5 (late > 2005). Here's the sequence of events: > > 1) I took my QuadG5 out to the garage one nice warm Saturday and used > compressed air to blow out all the dust. Yes, this may have been a bad > idea... > 2) Since then, CPU A has consistently run 10-20 degrees Celsius hotter than > CPU B. Over time, both CPU temps started to climb. > 3) I removed the CPUs and cooling systems, and replaced the thermal paste on > the CPUs. That helped dramatically - both CPUs dropped 20C. But, A is still > hotter than B by the same amount. > 4) I checked the cooling system thoroughly - no leaks evident. > 5) For the last year I've been running in reduced power mode. Which isn't > too bad performance-wise, but I'd love to get my full performance back. > > I've advertised on Kijiji for a replacement CPU board with no luck. > > Any ideas on what to look at next? > > Thanks, > > Mike The LCS on the G5 Quad has two pumps It may be a pump failure, they're known for that. Do you have Hardware Monitor? it shows the pump RPM's. John Carmonne Yorba Linda CA 92886 USA MacPro 2.66 Quad Nehalem -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
QuadG5 CPU A Runs Hot
Hi all, I'm looking for some ideas on how to address a problem with my Quad G5 (late 2005). Here's the sequence of events: 1) I took my QuadG5 out to the garage one nice warm Saturday and used compressed air to blow out all the dust. Yes, this may have been a bad idea... 2) Since then, CPU A has consistently run 10-20 degrees Celsius hotter than CPU B. Over time, both CPU temps started to climb. 3) I removed the CPUs and cooling systems, and replaced the thermal paste on the CPUs. That helped dramatically - both CPUs dropped 20C. But, A is still hotter than B by the same amount. 4) I checked the cooling system thoroughly - no leaks evident. 5) For the last year I've been running in reduced power mode. Which isn't too bad performance-wise, but I'd love to get my full performance back. I've advertised on Kijiji for a replacement CPU board with no luck. Any ideas on what to look at next? Thanks, Mike -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
