>
>I have a 280c and it tends to run from 103 to 123 degrees F depending on
>how I'm using it. One thing that will keep it running hotter is if
>Processor Cycling is not checked in the Powerbook Control Panel. I have
>discovered that Battery Amnesia will turn off (uncheck) Processor
>Cycling and leave it that way after it finishes its work.
>
>I also discovered, after using my duo 280c for a year, that the foam
>heatsink pad that goes between the 68lc040 chip and the stiffener was
>missing! I bought the duo used and someone before me had removed it or
>not replaced it when working inside it. Anyway, I simply used a small
>amount of plumbers putty to do the job. It is just something I had that
>I could form into the proper size and shape, and it can take the heat,
>and hopefully transfer heat away from the chip better than the air. But
>in all honesty, the putty only seemed to help cool it a few degrees if
>at all. Hard to compare without removing it and doing a controlled test
>which I am too lazy to do.
>Greg
Greg, what was the average temp after you put the plumbers putty in ?
I was considering overclocking a duo and putting in one of those
bat-wing heat sinks the 2300 uses.
I also notice that the magnesium frame doesnt dissipate heat as well
as I would of hoped. Maybe if you could copper plate part of the
frame around the CPU it would transfer heat better. Rats, what the
heat conductance of Mg anyway ? I should look that up at work.
Mad Dog
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