Re: Replacing laptop cpu

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jdow:
> How far do you expect it to change, Grasshopper? Inquiring and bemused minds 
> want to know.

I wouldn't expect much, probably not even significantly.  After all, DC
biasing with varicap diodes across crystals are used in phase locked
loop circuitry (to do the phase locking).  And phase locking is really
only a slight pulling against the natural frequency of your electronic
tuning fork.

> I completely fail to see why you might be concerned about the oscillator 
> producing a frequency of say 100.000000 MHz or 100.000100 MHz on a computer.

I'm not.  The other guy posed a theoretical question, and I gave a
supposed answer.  Smack it harder, and it'll ring differently.  I didn't
say it was going to be a huge difference.

Considering that quartz watches keep good time with diminishing battery
power over many years, being warmed by your wrist, and chilled by the
weather, I wouldn't think you'd get a significant change in BIOS clock
frequency depending on the BIOS battery, if it was designed to cope well
with battery changes, unless it was deliberately designed to go goofy
with significant battery charge drop.

And, yes I am well aware of using crystal ovens for greater clock
accuracy, in precision equipment.  But I'd only seen them make a few
Hertz difference in a 4.43 megahertz oscillator.

-- 
tim@localhost ~]$ uname -rsvp

Linux 3.19.5-100.fc20.i686 #1 SMP Mon Apr 20 20:28:39 UTC 2015 i686

All mail to my mailbox is automatically deleted, there is no point trying
to privately email me, I will only read messages posted to the public lists.

George Orwell's '1984' was supposed to be a warning against tyranny, not
a set of instructions for supposedly democratic governments.

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