1 CPU running hotter than other on Quad G5
I've had a problem recently that seems to be getting worse lately in that CPU B is running anywhere from 20-40 F hotter than CPU A. Both cores are registering this temperature so I don't think it's a sensor issue unless both are bad. I can also can raise the temp of the cpu to over 200 F while running folding or similar software, and this is a sustained temp for 10 min. The fans and water pump speeds were at their max values according to Hardware Monitor and a widget I have, iStat Pro or something similar.
I'm just wondering if anyone else has had this issue and what if anything apple has done about it and what might be the cause of it. Also what would be the cause of this, loose heat sink perhaps? I blow the dust out of the insides about monthly but I have not noticed it affecting the temp issue.
Thanks
I'm just wondering if anyone else has had this issue and what if anything apple has done about it and what might be the cause of it. Also what would be the cause of this, loose heat sink perhaps? I blow the dust out of the insides about monthly but I have not noticed it affecting the temp issue.
Thanks
Comments
I've had a problem recently that seems to be getting worse lately in that CPU B is running anywhere from 20-40 F hotter than CPU A.
This is a problem with some of the early G5 quad systems. The problem is that something goes wrong inside the processor/cooling module and the liqud cooling system is then no longer able to remove the heat from one of the processors. The high temperature activates the fans, but that doesn't help. My quad had the same problem and is currently repaired under warranty.
I wrote a document with a description of the problem to help the repair center. It can be downloaded from my site: http://www.mitt-eget.se/G5_Quad_cooling_problem.pdf.
This is a problem with some of the early G5 quad systems. The problem is that something goes wrong inside the processor/cooling module and the liqud cooling system is then no longer able to remove the heat from one of the processors. The high temperature activates the fans, but that doesn't help. My quad had the same problem and is currently repaired under warranty.
I wrote a document with a description of the problem to help the repair center. It can be downloaded from my site: http://www.mitt-eget.se/G5_Quad_cooling_problem.pdf.
Thanks just what I needed to know and my system was one of the early systems.
I've also tried everything including using CHUD tools to not use that CPU but it still idles warm. Even at idle with everything on reduced the fans are still running with one cpu at 84F and one around 115F. So it has to be a hardware issue I think.