On Jan 30, 2011, at 1:32 PM, Mac User #330250 wrote: > Could this be a PSU problem? > > Normally, when Geekbench starts its performance test, the CPU heat will > increase. If the fan pitch is a direct indication of the fan speed (what I > believe it to be) it doesn't make much sense to me that the fan speed goes > down. > > > If you have access to an alternate power supply unit for your Mac, try it > with > Mac OS X 10.4.11 and see if that does any good.
Since this is Mirror Door model I believe the main cabinet fan is what is changing in speed. The strange part is when I connect my 2.5" portable HD via FW400 that slows it as well. Powered XHDs don't have the same effect. I wish I had a second PSU for the machine. I do have a good 340watt PSU used in earlier PM G4 models. Will have to check compatibility. R/ Deaner -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
