K 10 svn:author V 10 nwhitehorn K 8 svn:date V 27 2020-10-15T13:43:43.218917Z K 7 svn:log V 459 Provide a slightly more-tolerant set of thermal parameters for PowerMac motherboard temperatures. In particular, the U4 northbridge die is very hard to cool or heat effectively with fans and is not responsive to load. It generally sits around 64C, where it seems happy, so (like Linux) just declare that to be its target temperature. This makes the PowerMac G5 much less loud, with no change in the temperatures of any system components. MFC after: 2 weeks END