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AMD and nVidia card on the same computer

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Sorry dude, you can't combine across manufacturers, completely different driver interfaces for SLI and Crossfire. What you could do it sell both of your cards and buy a 670 or 680 from Nvidia or a 7970 from AMD. I wish there was more to this answer but it just won't work.
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I know that with certain older drivers you can do a hybrid setup strictly for PhysX, using an AMD card as the primary graphics processor and an Nvidia card SOLELY to run physx, but I have not heard any CONFRIMED cases of hybridizing AMD and Nvidia cards to both do actual graphics processing. Really your best bet is to get a single GPU thats more powerful than the crossfired 6870s and running both monitors off of one card.

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rorosas88 said:
Can I use the Nvidia card for my primary monitor and the Radeon for my secondary monitor.


You can use GeForce and Radeon on the same PC only through HPX.
I'm not sure about multi-monitoring, since haven't tried that so far, but as far as using just one monitor goes, yes you can (that's what I'm doing right now, actually).
Also, it is best for an HPX-setup to have just two cards (one Radeon and one GeForce), because, as of today, it doesn't work correctly with CFX/SLI setups, usually flickering glitches appear.

DiaSin said:
With certain older drivers you can do a hybrid setup strictly for PhysX, using an AMD card as the primary graphics processor and an Nvidia card SOLELY to run PhysX

You should really go and google fresher information than that ("Hybridiz", for example). Yours is waaaay outdated.

McLovits: Please, don't write any more on this issue itt, you embarrass the community, and especially make people like me (who know their stuff) facepalm heavily.

mclovits said:
Sorry dude, you can't combine across manufacturers, completely different driver interfaces for SLI and Crossfire. What you could do it sell both of your cards and buy a 670 or 680 from Nvidia or a 7970 from AMD. I wish there was more to this answer but it just won't work.


I knew I wasn't goint to be to crossfire/SLI the cards, but I wanted to know if I could run each card independently of each other

master_chen said:
You can use GeForce and Radeon on the same PC only through HPX.
I'm not sure about multi-monitoring, since haven't tried that so far, but as far as using just one monitor goes, yes you can (that's what I'm doing right now, actually).
Also, it is best for an HPX-setup to have just two cards (one Radeon and one GeForce), because, as of today, it doesn't work correctly with CFX/SLI setups, usually flickering glitches appear.


Sounds interesting, but ultimately I think it might just be easier to just sell my cards and buy a new more powerful one.
Graphics card Expert

rorosas88 said:
I knew I wasn't going to be able to CFX/SLI the cards, but I wanted to know if I could run each card independently of each other

Don't listen to McLovits. He doesn't know jack about this.

rorosas88 said:
I think it might just be easier to just sell my cards and buy a new more powerful one.

You have two HD 6870s..here's what I suggest you do: sell just one for the current moment and buy cheap card like GT 640, and try the HPX through latest "Hybridiz".
If you won't like such setup (which is unlikely), then you can just sell GT 640 later (or don't even have to sell it, since it costs miser these days) and buy one card of the HD 7850 (and maybe even HD 7870) level, it will be at least on a par with the two HD 6870s you had, and later (if you'll still have that GT 640) you would be able to HPX it just fine, with the newly bought Radeon. Well, of course, you DON'T have to do that, it's just a suggestion (based on what I'd do, if I were in your situation).
It is for you (and only you) to decide what to do in the end.
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