Resolved Removing the smaller side heat sink on G5?

iamMacPerson

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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).
 
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iamMacPerson

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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!
 

iamMacPerson

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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.
 

gavinstubbs09

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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.
The 2.7GHz is like that too. Super weird!
 

tom vilsack

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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.
 

iamMacPerson

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Jun 12, 2011
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The 2.7GHz is like that too. Super weird!
Very odd! Speaking of which, how is it working out for you?

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.
Yeah, thats about the same here.
 

gavinstubbs09

macrumors 65816
Feb 17, 2013
1,386
247
NorCal boonies ~~~by Reno sorta
Very odd! Speaking of which, how is it working out for you?



Yeah, thats about the same here.
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!
 

iamMacPerson

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Original poster
Jun 12, 2011
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AZ/10.0.1.1
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!
Nice! Let me know what its like after the calibration.