I measure my temp in Celsius and I can tell you anything above 50 C is too hot. Basically if you can smell the heat then you are around 50 or more and it's too much (as far as I am concerned). Now Apple may have some numbers or maybe XLR8yourmac.com or CubeOwner.com . jj On Saturday, March 20, 2004, at 08:13 AM, Cube List wrote: > CPU Temp: How hot is too hot?... > From: George Pepper <pep27 at mac.com> > Message-Id: <8006AC94-7A14-11D8-87E8-0030657BC5DE at mac.com> > > Hooked up a Formac Studio TVR to my Cube today, and the CPU temps went > up from 118 degrees to 136 while watching TV... > > Where does the CPU temp become a concern?... > > Pep