I am noticing that my laptop speeds are varying on the T5600 Core2Duo chip (using the Intel Processor ID Utility). It normally is correct at 1.83gHz -- but, then I was noticing it at .99 -- then .83 -- dropping all the way to .57 ?? Is this appropriate? This laptop has been "off" for almost a year after the original hard drive fried and I replaced it finally. I notice the CPU heat has gone all the way to 180°F. But, I noticed this morning that at just starting up and the processor at barely 130°F it was only at .99gHz?
Maybe it is SpeedStep® -- whew! Yes, it is running very hot. It is a Dell Inspiron 6400. I will open it up and see if the fan is dust clogged when I get some forced air over the weekend (and a cooler pad too maybe).