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Multiple PCI GPU`s. Possible?


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#1 Ellypho

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Posted 06 February 2009 - 05:33 PM

Hey guys as the title says, is it possible to have for instance 3 ati radeon 9000 cards in a system all VIA PCI and have them each do an individual monitor. Allowing me to go up to 6 monitors. I was thinking of a matrox GPU since i could buy a good ol' canadien card but they cost an arm and both eyes. Thanks everyone!
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#2 Sneakycyber

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Posted 06 February 2009 - 05:38 PM

As far as I know you can not stack PCI video cards with another PCI video card. You can stack 1 PCI video card with 1 AGP onboard or AGP expansion card. I did a quick Google search and didn't find much either. What is the need for 6 monitors may I ask. I have two and I can only think of using a third if I was playing MMORPG games and wanted to 1 load a map view, 2 run a BOT, 3 play another character. Or watch movies while multi tasking. But 6?
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#3 Ellypho

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Posted 06 February 2009 - 05:48 PM

Well you see. I rotate my screens 90Degrees so its more of a web\programming\music list kinda thing. It would probably end up being 4 but i want to have room to expand
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#4 Platypus

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Posted 06 February 2009 - 07:51 PM

It can be done, but as the number of adapters on a single bus increases, the demands of resource allocation and bandwidth also increase. The PCI bus only has 132MB/s bandwidth shared among all devices, and 4 INT lines, mostly also shared with the AGP slot if the board is AGP. So for applications that don't need high video bandwidth, you should be able to use 1AGP + 3 PCI cards without unreasonable difficulties, or 4 PCI cards with another bus that doesn't share resources with PCI, eg PCIe.

In theory, you should be able to use display adapters up to the the limit supported by the OS (off the top of my head, 10 displays with XP I think), but the installation can start to get cranky before that. Of course an adapter can drive multiple displays, so you could have say 3 dual output cards for six displays.

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#5 the_patriot11

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Posted 07 February 2009 - 03:39 AM

if you ivest in a SLI or crossfire setup, I have heard of people putting 2 cards in SLI or crossfire (I hear the crossfire drivers are better for this but never tried this) and a PCI video card and doing it that way. There are drivers for crossfire or SLI that allow you to run 4 monitors, and if you plug a pci card in after that u got six monitors, but man, talk about a crowded case and I have nightmeres of a major cooling problem. me personally, I run everything on 1 22 inch monitor and if I really need another I boot up my laptop hehe.

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