When my Power Mac G5 Quad wakes from sleep, or the fans need to ramp up, they don't seem to ever ramp back down to idle levels until I restart. This is very annoying to listen to as I try to take part in the PowerPC Challenge, akin to the noise level a certain YouTuber was experiencing. My Quad is special, in that this collection of parts didn't come out of the factory together; I built the thing myself from a late 2005 dual-core's case, logic board, CPUs/LCS, and PSU. I'm wondering if this means I simply need to attempt a thermal calibration, if so it would be helpful to know what ASD version to look for. Any advice is appreciated.