I don't have a Quad, alas, but have worked with three dual G5s and still use one daily and another several times a week.
A handful of ideas/ responses:
1. Different temperatures are normal, but high fan speed may be a sign of coolant leakage. Are there any other odd behaviours? Have you had a good look around in there? Is there a sackful of dust clogging the airways (this DOES happen with the G5s)?
2. What are the temperature peaks when running hard? D/L Temperature Monitor (free) to, well, monitor the temps.
3. What is the energy system preference set on, Highest, Auto or Reduced? Adjustments here can make a big difference.
4. The CPU cooling system may need to be serviced and/or recalibrated with the relevant Service Diagnostics software.
A handful of ideas/ responses:
1. Different temperatures are normal, but high fan speed may be a sign of coolant leakage. Are there any other odd behaviours? Have you had a good look around in there? Is there a sackful of dust clogging the airways (this DOES happen with the G5s)?
2. What are the temperature peaks when running hard? D/L Temperature Monitor (free) to, well, monitor the temps.
3. What is the energy system preference set on, Highest, Auto or Reduced? Adjustments here can make a big difference.
4. The CPU cooling system may need to be serviced and/or recalibrated with the relevant Service Diagnostics software.