Running two graphics cards from different makers in Win7 64. Nvidia Geforce 8400 PCI plus ATI X1900 PCIe16

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canterburyflyer

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Jul 14, 2013
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I am ran into some issues running this 3D CAD program and had to update the graphics . I installed the ATI X1900 and all was good with Fusion360 thank god. So we have the remaining card that I want to reinstall with the existing drivers and run a smaller monitor. I am just not sure how it works in Win7 64bit OS after I have it back on the mobo.
I am totally cool with just trying it out but I thought there were so many brilliant minds here, why not run it past you guys. :)
 
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Karadjgne
There is also maybe an issue with the amd card. At pcie 2.1, the power distribution was changed, and this affected only amd cards. So new cards work only on new boards, it takes old cards to work on old boards. If you have a version newer than pcie 2.1, it'll depend if the x1900 is pre or post 2.1 whether it'll work or not.
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Supahos

Supahos

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Nov 11, 2013
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I'm not 100% sure it can be done. If it were two ati/amd cards or two Nvidia cards Id say go for it. But I think you'll run into issues with drivers if you try to run both. All I can say is give it a shot, but I think it'll be a no go
 
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R_1

R_1

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the X1900 and 8400 each should be enough to run two monitors individually, but sure you can have two different cards running in the same system just not cooperatively ala SLI.
my first dual monitor rig in 2001 had to have a second video card. people have enabled the onboard GPU and had a seperate dedicated card. watch for driver conflicts.
be sure the system has enough PCIe lanes or you could be hobbling each card.
 
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Karadjgne

Karadjgne

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Your biggest issue will be drivers. Video drivers like to take priority, most pc's have integrated gpus, so chances are quite good that when you mix nvidia with Amd you are going to have a battle for who gets what where. It can be done, I've seen it, but you'll need to install just the drivers, not part of a software package.
 
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canterburyflyer

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Jul 14, 2013
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Thanks for your first response .
You were right it doesn't work in this instance. I had no image.
The only reason I wanted to try it was because simply I had no spare DVI-I cable around to get my other 20" monitor up and running and wanted to use the VGA out from the Geforce 8400GS.

Certainly there was conflicting drivers, or lack of resources. The Asus din't much like the rude approach of mine and neither did Windows OS. I had to do some repairs upon repowering after I had removed the card.
 
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canterburyflyer

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Jul 14, 2013
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I thought I had removed any of the unnecessary drivers of the Nvidia card. but still the attempt failed. There was just black. on both monitors.Like I was saying to another chap, I only had a lack of graphic interface, the simple lack of DVI cables to get this other 20" monitor working . The OS was very unhappy with this ham fisted attempt of mine. I had some repairs to do after removing the Geforce and leaving only the money card in place! At that point I was pleading with the gods that I will never attempt anything like this again if I could just have my PC and we'll forget this ever happened.
I will be going to the store as soon as time permits
 
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Karadjgne

Karadjgne

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There is also maybe an issue with the amd card. At pcie 2.1, the power distribution was changed, and this affected only amd cards. So new cards work only on new boards, it takes old cards to work on old boards. If you have a version newer than pcie 2.1, it'll depend if the x1900 is pre or post 2.1 whether it'll work or not.
 
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