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Tue, 25 Aug 1998 15:07:24 -0800 |
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On 26 Aug 98 at 3:55, Roberto Safora Romay wrote:
> Yes Sam; but I am asking if those 83 Mhz implies something. (bus
> speed, or something like that)
On some machines, increasing the FSB (front-side bus) to 75 or 83
MHz doesn't affect the PCI slot speed of 33 MHz. [This is called
"asynchronous PCI", and is/was a *feature*.]
On cheaper motherboards, the 33 MHz PCI clock is just half of the
66 MHz FSB; on these boards, pushing the FSB to 75 or 83 MHz yields
PCI speeds of 37.5 or 41.5 MHz. Yes, this is faster -- but some PCI
cards don't like that!
My guess would be that a reference to 83 MHz *probably* means that
the card is claimed to work even at a 41.5 MHz PCI speed.
[These speeds are used with certain CPUs, especially from Cyrix, or
to overclock chips rated for 66 MHz.]
This may not apply to you. However, if your system is running a
faster bus, it's possible that the socket contacts are introducing
just enough noise/resistance that the card can no longer operate
reliably at this speed.
David G
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