PCI-X and PCI-Express x16

[Yay Deutschland!]

Can some one help me clear up a bit of confusion here?

I have a computer with a server board inside and it has 3 of the blue-green
color marked PCI-X 64bit 100MHz slots inside along with 2 white PCI-64bit
66MHz slots. (The really long PCI slots if you don't know what I am talking
about.) The system comes with a integrated Rage XL 8MB PCI chip, which I
want to disable and install a better card inside. I have seen companies that
manufacture "PCI-X" videocards, now my question is: are they referring to
the PCI-X 100MHz slots or are they talking about PCI-Express x16 slots?

My Second question: Do both PCI-Express x16 cards AND PCI-X 100MHz cards
exist?

Thanks

 

[First of One]

AFAIK there are no PCI-X video cards. File servers equipped with PCI-X slots
simply use "normal" PCI video cards, since the slot is backward-compatible.
PCI-X 64-bit 100 MHz is slower than AGP2x (equivalent to 64-bit 133 MHz), by
the way.

It's common for PCIe cards to be mislabeled "PCI-X" in advertisements:

http://www.ecost.com/ecost/ecapparel/shop/detail.asp?dpno=505423

 

[DaveW]

Servers use PCI-X; which is NOT the same as consumer used PCI-express x16.

 

[Yay Deutschland!]

That clears things up alot =) Given that, does any one here know of a
regular PCI-32bit that will fit into the PCI-X 100MHz slots? I noticed that
the PCI-X 100MHz has an extra notch at the front, therefore it needs a PCI
card with that notch cut for it so that it will fit.

 

[First of One]

From what I read, the notch is to prevent the insertion of really old 5 V
PCI cards. Most PCI cards found today are 3.3 V, and should work fine. It
shouldn't be difficult to find photos of the card you want online, just to
make sure.