beachycove
Well-known member
A year ago, I bought a dual 2.0GHz G5, and as I had successfully repaired a dead dual 1.8Ghz unit (though even then it would only run stably under X.4), I decided to give the "new" dual 2Gz similar treatment. This involved disassembly of the CPUs, cleaning, reapplication of thermal compound and thermal calibration using ASD 2.5.8, the version for the early 2005 model in question.
I was disappointed; the new thermal compound and ASD had had a dramatic impact on the dual 1.8, but It had very little impact on the dual 2GHz machine, which continued to run hot.
So, as these holidays I am idle, I decided to have another go, and have just serviced the dual 2GHz G5 again. This time I used more thermal compound than before, and this time I screwed down the heatsink a little tighter (I had been terrified of breaking the processor before, owing to some advice I had read on the web).
This time, after thermal recalibration (which is key), I have a significant difference in CPU temperatures, which idle a full 10ºC lower, and which are 5-7ºC lower under load. This makes the machine much quieter, and will hopefully keep the CPUs in better health.
I did this because I was tired to having the fans ramp up in the machine in question when doing simple things like web browsing, which had raised the temperature to about 60ºC in CPUA and 53ºC in CPUB previously, but which now rises (according to Temperature Monitor) to about 54ºC and the usual 45ºC or so in the second CPU.
Good result and well worth the 90 mins. or so it takes from start to finish.
I was disappointed; the new thermal compound and ASD had had a dramatic impact on the dual 1.8, but It had very little impact on the dual 2GHz machine, which continued to run hot.
So, as these holidays I am idle, I decided to have another go, and have just serviced the dual 2GHz G5 again. This time I used more thermal compound than before, and this time I screwed down the heatsink a little tighter (I had been terrified of breaking the processor before, owing to some advice I had read on the web).
This time, after thermal recalibration (which is key), I have a significant difference in CPU temperatures, which idle a full 10ºC lower, and which are 5-7ºC lower under load. This makes the machine much quieter, and will hopefully keep the CPUs in better health.
I did this because I was tired to having the fans ramp up in the machine in question when doing simple things like web browsing, which had raised the temperature to about 60ºC in CPUA and 53ºC in CPUB previously, but which now rises (according to Temperature Monitor) to about 54ºC and the usual 45ºC or so in the second CPU.
Good result and well worth the 90 mins. or so it takes from start to finish.
