Re: [PLUG] Re: SATA and Raid

[Jason <jcostom@gmail.com>]

On 1/4/06, Pat Regan <thehead@patshead.com> wrote:
> Toby DiPasquale wrote:
> > On Tue, Jan 03, 2006 at 04:55:09PM -0500, Aaron Mulder wrote:
> >> Just be aware that PCI-X and PCI Express are not the same thing!  Most
> >> previous server boards used PCI-X as the faster-than-PCI alternative,
> >> but if the world moves on to PCI Express in the future, a PCI-X card
> >> will not be compatible.
> >
> > AFAIK, most PCIe boards can accept PCI-X cards in PCIe slots. Intel's can,
> > anyway.
> >
>
> That would be an interesting trick...  PCIe and PCI-X user physically
> different connectors (A PCI card will not fit in a PCIe slot).  Also,
> PCI-X is a parallel interface like PCI.
>
> If there truly is a motherboard that can somehow accept PCI-X and PCIe
> cards in the same slots, I would love to know which one it is.  There
> are plenty of server/workstation class motherboards that have PCI,
> PCI-X, and PCIe slots.

Yeah, I'm with Pat on this.

Have a look at this picture:

http://upload.wikimedia.org/wikipedia/en/thumb/f/fc/PCIExpress.jpg/300px-PCIExpress.jpg

PCI cards work in PCI-X slots.  PCI and PCI-X simply do not fit in a
PCIe slot, be it x1, x4 or x16.  Also, calling PCIe a "bus" is
actually sort of a misnomer, since it's a serial connection, in
reality.
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