Multi-Brand Compatibility... Need Advice

[jonas_me]

I have a system where the user is trying to get three VGA signals out
of it.
Its a high-end DELL system that has a built-in video, but when the PCI-
X card is in, it forces the onboard to be disabled. The add-in card
with dual outputs is:
PCI-X: NVIDIA GeForce 8500 GT
I've been trying to add in another PCI card to the system, and I
cannot seem to get something compatible.
We tried one model (can't remember now which) and it just wouldn't
boot up at all even as the only video card.
I tried a really ancient PCI video card and it came up fine and all
the outputs worked, but the resolution was crap on the old card.

So, I went on DELL's site and checked out which compatible video cards
they sell along with those systems and I came up with this:
PCI: ATI Radeon X1550
So, I promptly ordered up a VisionTek ATI Radeon X1550 in PCI. It
works great as the only video card in the system, but not together
with the NVIDIA card. The System won't boot up with both cards in it.

Anyone know of any tricks? Do I have BIOS memory stepping on each
other?
Does anyone know of any for sure PCI video cards that will co-exist
with the NVIDIA GeForce 8500GT PCI-X?
Or, can someone recommend a triple (or quad) output PCI-X card? It
doesn't have to be a crazy gamer card, I just need to show decent
resolution on 3 24" LCD displays for regular office applications.
(they use them with other sources too)

Any suggestions would be appreciated.
JD

 

[Ofnuts]

Or, can someone recommend a triple (or quad) output PCI-X card?

http://www.wedgwood-group.com/multi-screen_graphics_cards.htm