>I recall reading on this list (some time ago) of one member who had
>swapped out the oscillator in his duo for a faster one. Seems like it
>was Mad Dog but I'm not sure. Anyway, I found a website that says you
>can speed up the duo 280 from 33 MHz to 43 MHz successfully. I wonder if
>anyone has done this and could report experiences. Also, I think it was
>System 7.x that would allow you operate at half-speed for battery
>savings (not to be confused with processor cycling).
The ability to overclock successfully varies. Some ppl may get to 43
MHz with no problems, some may not. Roll the dice. I can say that
the 68040 Duos I modify to 37.5 MHz, everything works OK. I figure
at 40 MHz, you start to roll the dice.
>I have changed out the 40 MHz crystal for a 50 MHz crystal in my
>PB-3400c increasing it from a 240 MHz machine to 300 MHz and there are
>no noticeable ill affects. If it runs hotter, it is only barely. I do
>have a Control Strip that reads out the temp for monitoring it.
Nice job. It turns out that many Apple CPUs run slower then they
are rated to go.
>Greg
Mad Dog
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