rec.autos.simulators

Overclocking?

Philip M. D'Amat

Overclocking?

by Philip M. D'Amat » Mon, 30 Nov 1998 04:00:00



>>>either way its a risk - especially with video cards ...
>>>a lot of extra heat and in some cases a cooling fan requirement...
>>>overheat the CPU ...


>>   Actually, 450 MHz is the best way to OC the Celeron 300A, IMHO,
>>since you run the CPU at a high (but stable) speed, the memory at
>>100MHz (stable for PC100 memory), and the PCI/AGP bus at 66 MHz, so
>>you don't risk data loss.  YMMV.  From a happy Celeron 300A/450A
>>user...

>Please don't bite me, I'm a complete newbie at this overclocking
>stuff.  I'm just happy my computer runs at all.  As suggested, I will
>check out what's being posted in alt.comp.hardware.overclocking.

>But please do explain to me, if overclocking results in such a
>significant speed increase for your computer without risk of serious
>harm to the hardware, why don't they come overclocked that way
>directly from the manufacturer?

>What's the catch?

The catch?
Overclocking isn't guaranteed to work - for the manufacturer, or the
end-user.  The definition (mine) of overclocking is specifically running the
processor (or other system clock-driven component) beyond manufacturer's
specifications.  Example: Intel designed the Celeron 300A to run reliably on
a 66Mhz bus with a CPU multiplier of 4.5.  I happen to be lucky enough to
have a Celeron 300A that is happy to run on a 100Mhz system bus, yielding
450Mhz - and costing about $450 less (at time of purchase) than a 'true'
PII-450.  This is not true for every 300A system.  There's more detail to
this story, but this is the gist.  And this is r.a.s.

--
Philip M. D'Amato

"You can observe a lot just by watchin'"
--The Inimitable Yogi Berra

Philip M. D'Amat

Overclocking?

by Philip M. D'Amat » Mon, 30 Nov 1998 04:00:00

<snip>
Jeff, all good points, but I'd like to clarify what I *think* is a
misunderstanding regarding Intel processor warranties.  That said, I would
hope and expect that if I'm incorrect that someone would point me to a
correct source.

Here's my observation regarding Intel warranties on processors.
I cannot find reference from Intel indicating that overclocking itself voids
warranties, though I do find references that Intel does not recommend the
practice.

see http://www.intel.com/procs/support/faqs/iarcfaq.htm

I can find references to processor specifications regarding core voltage
requirements and temperature (core and ambient).  In short, I believe that
overclocking a processor while remaining at the specified core voltage (2.0
volts for my Celeron 300A) and remaining under x degrees Celsius (measured
at specified locations near the processor) will not void the warranty.

<snip>

Nice to give credit to Tom - though lately he's been under flak from the
online community ('Tom's sold out!" being the usual statement).  Tom's site
started my overclocking hobby - and taught me a lot about hardware (mostly
chipsets) that I didn't know (back when it was pretty much just him writing
for the site hosted at sysdoc.pair.com).


>NAR Northeast Regional Contest Board site - points and more...

Jeff, all good points, but I've always questioned the very common conception
regarding Intel's warranties.  I've looked at Intel's warranty statements
online, and I just don't find even vague references to overclocking as a
pre-condition for remaining within warranty.  However, I will note that
overclocking the system bus will, in many cases (not all) run PCI and AGP
buses beyond their specifications, possibly voiding the warranty on
non-processor components - but this depends on the warranty given by those
component manufacturers, and I am not familiar with warranty policy on all
PCI or AGP products available.

--
Philip M. D'Amato

"You can observe a lot just by watchin'"
--The Inimitable Yogi Berra


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