On Nov 2, 3:17 pm, Scott Henderson <[email protected]> wrote:
> Can't hurt. 33 MHz 040's can run a bit hot and it's always a good idea to
> keep vintage components as cool as possible. However unless you're running a
> math intensive program that uses the FPU I doubt a full 040 will run too
> much warmer than it's LC brethren. I have an "040 Chiller" I bought from
> Output Enablers on my 48 MHz overclocked Quadra 840av and it does a great
> job of keeping things cool. A touch expensive though...
>
>
>
> On Mon, Nov 2, 2009 at 11:51 AM, Dave <[email protected]> wrote:
>
> > What about a heat sink after upgrading with a full 68040? How much
> > more heat does the floating point logic add?
I replace the LC in my quadra605, and did not put a fan. but it is
only running at 25mhz and it is rated at 33.
However my quadra630, had a full '040 to start with and there is no
heat sink IIRC. that is a 33 rated and running at.
If I overclocked the 630 then I would put a heat sink. If I ran the
605 above 33 I would.
But you can always just try it and if it hangs then do the sink. I
have done these experiments on Beige G3 where overclocking is EZer,
and I have not hurt the cpu overheating it.
BTW the fpu on '040 is not very good, but is usually required for
certain things. The FPU is weak, but software FPU is impossibly so.
Even for the first powerpc 601/60 the FPU is 10x the '040.
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