PCI cards in PCI-X slots

Archived from groups: comp.sys.ibm.pc.hardware.chips (More info?)

On Sat, 26 Mar 2005 09:16:35 +1200, gimp <anonymous@smeg.com> wrote:

>is it possible to stick a PCI card into a 64-bit PCI-X slot...? i heard
>it was as long as the card is 3.3V compatible.

This is correct, by rule.

>i'd be interested in putting a sound blaster audigy2 platinum into the
>tyan S2895 when it arrives, unfortunately i'm not sure on the sound
>blaster's voltage specs... that tyan mobo actually has a PCI slot but
>its in an aweful place between the 2 graphics cards.
>
>one more thing i also heard that running a 33MHz PCI card in a PCI-X
>slot like this would downgrade the performance of other slots... is this
>true or myth?

True. The bus is ruled by the least capable connected agent.

>i know the PCI-X slots are on independent buses so
>wouldn't have thought it would matter.

Again, *the bus* is ruled by the least capable connected agent.

What you do to one bus should not have any affect on a different bus.

/daytripper