Resolved Removing the smaller side heat sink on G5?

Discussion in 'PowerPC Macs' started by iamMacPerson, Mar 23, 2014.

  1. iamMacPerson, Mar 23, 2014
    Last edited: Mar 28, 2014

    iamMacPerson macrumors 68030

    iamMacPerson

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    #1
    Ok, so I'm disassembling my G5 to redo the thermal paste as it seems to be time to do so. I'm having a problem though getting that smaller heat sink to unhook from the main heat sink. Does anyone have any tips on how to do so? I don't want to bend the heat sink(s).
     
  2. iamMacPerson thread starter macrumors 68030

    iamMacPerson

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    #2
    Got it off, but now I can leave that little clip off or do I need to leave it on?
     
  3. gavinstubbs09 macrumors 65816

    gavinstubbs09

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    #3
    Oh no my old 2GHz G5 is getting dissected!

    Just curious, how was the thermal paste on it?
     
  4. iamMacPerson thread starter macrumors 68030

    iamMacPerson

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    #4
    Just starting to get old. It all came off with a little rubbing alcohol and a round face pad. Processor #1 is done, #2 is underway.
     
  5. iamMacPerson thread starter macrumors 68030

    iamMacPerson

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    #5
    So I swapped the processors around. Why? I wanted to. So I'm now running the Termal Calibration which has finsihed with CPU 0 and is working on CPU 1.

    While I had it apart, I was thinking just how massive these heat sinks are for such a small processor. Its hard to believe just how much heat these things put out!
     
  6. iamMacPerson thread starter macrumors 68030

    iamMacPerson

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    #6
    Wow what a difference! Temperature Monitor is showing a good 10°F drop in the temperature at both CPU A and B, so thats good!

    Interestingly enough, CPU B (previously CPU A) is still running hotter then CPU A (previously CPU B). Not sure if it has to do with age, the heat sink, or what but there is a 10-15°F difference between the two at most times.
     
  7. gavinstubbs09 macrumors 65816

    gavinstubbs09

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    #7
    The 2.7GHz is like that too. Super weird!
     
  8. tom vilsack macrumors 68000

    tom vilsack

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    #8
    If it helps?

    My powermac G5 1.8 dp (best I can tell stock thermal paste,as plastic pin holding G5 metal cover was in place and didn't look like it was ever removed)

    istatnano
    cpu A 49c
    cpu B 45c

    cpu A amp 20c
    cpu B amp 19c

    both stay close to these temps most time.
     
  9. iamMacPerson thread starter macrumors 68030

    iamMacPerson

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    #9
    Very odd! Speaking of which, how is it working out for you?

    Yeah, thats about the same here.
     
  10. gavinstubbs09 macrumors 65816

    gavinstubbs09

    Joined:
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    #10
    I took the processors out and swapped the two. Maybe since the old top CPU is getting so hot I moved it to the bottom where it gets nice cold coolant. Just ran 29 tests for fans and sensors and it passed with flying colors. Running the thermal calibration right now!
     
  11. iamMacPerson thread starter macrumors 68030

    iamMacPerson

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    #11
    Nice! Let me know what its like after the calibration.
     

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