Re: Beware the overclocked PCI bus!

[khp@dolphinics.no (Kai Harrekilde-Petersen)]

Andy Ingraham  28-Jan-1997 1046 writes:
> A co-worker found the following notice on the Cyrix web site, about a
> motherboard (by FIC or FICA Inc.) that over-clocks the PCI system:
> 
> 	NOTE: The PCI bus runs "out of spec" (37.5 MHz) for the PR200+.
> 	Contact FIC for the recommended list of PCI peripherals.
> 
> This shaves 3.33 ns off the minimum PCI cycle time.  As mentioned in
> the notice, the motherboard won't work with many PCI cards.
> 
> Are there other known cases of PCI over-clocking or otherwise
> intentionally violating the PCI electrical specs?

This seems to be one of the favourite DIY projects these day; The
point is that people want to run their CPU bus at 75MHz (or even 83.xx
MHz) to increase the main memory bandwidth.

"Tom's hardware Guide" even has full discussion on how to do it.  See
http://sysdoc.pair.com/75mhzbus.html


Kai
-- 
Kai Harrekilde-Petersen    <khp@dolphinics.no>    #include <std/disclaimer.h>
http://www.dolphinics.no/~khp/          Linux: the choice of a GNU generation
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