On Friday 20 May 2005 11:44 am, Allen Brown wrote:
> On Fri, 20 May 2005, walter fry wrote:
> >>   Of course I don't overclock.  I leave that to children.
> >
> > lets keep in mind oc also results in extra heat
>
> Indeed.  Extra heat shortens the life of electronics in many
> ways.  But extra current plus extra heat gives a double whammy
> to the metal traces.  The result is greatly increased
> electromigration.  That is a phenomenon where the metal conductor
> slowly flows like a liquid under the pressure of the electrons
> coursing thru it.  It flows fastest where the metal necks down
> or turns.  That forms voids at those discontinuities.  And voids
> are hard failures.  (He's dead Jim.)  Electromigration is highly
> non-linear.  So a small increase in current + temperature can
> reduce the life of your chip(s) from 20 years to <1 year.
>
> I have had four computers.  I kept them for about 15 years (CP/M),
> 10 years (Amiga), 5 years (Linux+Dell), 1 year (Linux+Abit but
> flakey).  I intend to keep the current one (Linux+Gigabyte) for
> at least 5 years.  I don't need to be shortening its life.

I have a 366 cel that ran at 550 (150%) for over 4 years. its not turned on 
right now (not for about a year), but it still works fine. It overclocks real 
easy, and doesnt even use special cooling. Some CPU's will overclock real 
good, some really badly. 

Jamie

> --
> Allen Brown
>   work: Agilent Technologies      non-work: http://www.peak.org/~abrown/
>         [EMAIL PROTECTED]             [EMAIL PROTECTED]
>   Heck is where people go who don't believe in gosh.
>
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