[vox-tech] underclocking

[Ryan]

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PPPoE? Ick. I have a bridged DSL connection, it's totaly transparent to t=
he=20
computer. How hard on a cpu is plain old ethernet?=20

On Saturday, January 05 2002 06:08 pm, Jeff Newmiller wrote:
> On Sat, 5 Jan 2002, Ryan wrote:
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> >
> > This got me thinking, my firewall has a pentium 120, does this really
> > need a fan?
>
> The 486DX2-66 had overheating problems when it first came out.
>
> I think the answer is specific to each chip, because they lowered the c=
pu
> voltage as they climbed the clock speed ladder, but they didn't do it i=
n
> step with the clock speed increases.  There were other things they did =
to
> handle the thermal load as well.
>
> Finally, firewalls typically have a very very low cpu load.  Put a
> computationally intensive application on that cpu and the temperature c=
an
> rise by 20 degrees C.  Run a pppoe connection and start pumping data
> through it and watch your cpu temperature rise.
>
> Learn by trial and error.  Older cpus didn't have built in temperature
> monitors, so it was harder to experiment with them.... you had to wait
> until the cpu locked up.  External temperature monitoring is not likely=
 to
> be helpful, unfortunately.
>
> > On Saturday, January 05 2002 09:21 am, Peter Jay Salzman wrote:
> > > henry, my firewall, mephisto, is using a "Pentium MMX" clocked at
> > > 233MHz.
> > >
> > > there is no fan.  it's creepy how quiet it is.  in fact, sometimes =
i
> > > have to look over to it just to get a mental confirmation that the =
damn
> > > thing is on.   have to admit, i've forgotten how nice it is to not =
have
> > > a fan on a machine.
>
> [...]
>
> -----------------------------------------------------------------------=
----
> Jeff Newmiller                        The     .....       .....  Go Liv=
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> DCN:<jdnewmil@dcn.davis.ca.us>        Basics: ##.#.       ##.#.  Live G=
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g
> Research Engineer (Solar/Batteries            O.O#.       #.O#.  with
> /Software/Embedded Controllers)               .OO#.       .OO#.  rocks.=
=2E.2k
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>
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