So I saw that is posible to CrossfireX 2 same series cards like 7950 with 7970 without problems, they both are 79xx.( I saw too that someone did a Crossfore with 7870 and 7950, even then AMd said is not possible is graphics series are different.)

But what about two same series Nvidia cards 6xx, is possible to SLI 660ti ith 670 or 680? they are same series graphics no?

11 years ago*

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No.

11 years ago
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really :O? Nvidia don't care about SLI 2 same series cards? since AMD did it...:/

11 years ago
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It's a tad counterproductive to CF two different cards. Take a 7870 + 7850 CF for example, I'm fairly certain the 7870 will just downclock itself to match the slower card. So you're not exactly getting the best bang for your buck that way.

11 years ago
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No you can only SLI with same model card and preferible same brand also

11 years ago
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That's ultra bad :(, but 660 ti SLI do it great too, but I prefered a newer card :S

11 years ago
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Sell your 660 and buy a 670/680 then,

11 years ago
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If you already have one 660ti, adding another 660 ti is going to be better than running just one 670 or 680, so that's not too bad, really.

11 years ago
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Better yeah, but SLI can be more trouble then it worth, gotta weigh the factors, usually a more powerful single card is the better choice.

11 years ago
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Two way SLI isn't too bad. Its when you do 3-way and 4-way thats a bit more problematic.

11 years ago
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No,you can't

11 years ago
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guys isn't THAT SLI?

11 years ago
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But this is 640 not 670 or 680 :(

11 years ago
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No, not exactly. They are using ONE video card for the video, and ONE video card as a dedicated phys-x processor. The cards don't have to match in this situation because only 1 card is handling the video rendering. It's not the same as running 2 video cards together in SLI/crossfire to handle video rendering.

11 years ago
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You can use two different cards if you devote one to Physx processing. But you can't run SLI on two different cards. That's what Crossfire is for.

11 years ago
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Closed 11 years ago by lordcataclysm10.