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can a regular crossfire mobo run this?

post #1 of 20
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Theoretically, could a Gigabyte P67-UD4 motherboard (which supports crossfire x8/x8) support a 5970 and a 5870? As in... tri-SLI on a crossfire motherboard?

Just wondering theoretically (since I have a 6970 and I figure the 6990 will support 6990/6970 much like the 5970 and 5870).

Or is a regular x8/x8 motherboard only good for two single GPU units, and not a double-GPU card and another GPU card?

(post edited to make sense; accidentally typed out the wrong number originally)
Edited by PaulWog - 1/31/11 at 12:20am
    
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post #2 of 20
I am very confused as to what your question is?

when crossfiring cards, you want the first two numbers of the cards to match.

so you want 69xx or 58xx and so on.

Crossfirering between series, or even sub series doesn't work. I can't crossfire my 5770 and a 5870.
post #3 of 20
Quote:
Originally Posted by thrasherht View Post
I am very confused as to what your question is?

when crossfiring cards, you want the first two numbers of the cards to match.

so you want 69xx or 58xx and so on.

Crossfirering between series, or even sub series doesn't work. I can't crossfire my 5770 and a 5870.
This . So I think you could go 6970 and a 6950 , but not with 2 diffrent series .
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post #4 of 20
Yes, as long as the cards have the same first two numbers, they are good to go.

but any two cards that don't have those first to numbers matching won't work.

there maybe be some exceptions to that rule, but that is the rule most of the time.
post #5 of 20
But just a question for you .. isn't a 6970 enough for you my friend ? I could SLI my 570 but it's just too early to do that .
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post #6 of 20
Quote:
Originally Posted by thrasherht View Post
Yes, as long as the cards have the same first two numbers, they are good to go.

but any two cards that don't have those first to numbers matching won't work.

there maybe be some exceptions to that rule, but that is the rule most of the time.
HD5970 and a HD5870?
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post #7 of 20
Quote:
Originally Posted by thrasherht View Post
Yes, as long as the cards have the same first two numbers, they are good to go.

but any two cards that don't have those first to numbers matching won't work.

there maybe be some exceptions to that rule, but that is the rule most of the time.
the only exeption is a 4870 can CF with a 3870. ONLY exeption.
4870X2 + 3870 doesnt work
3870X2 + 4870 doesnt work

ONLY a single 4870 and single 3870 in 2 way CF. no more.
EDIT: and 5970 can CF with 5870 (idk if it can CF with a 5850/5830 tho)
other than that, the first 2 numbers must match.
    
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post #8 of 20
Short answer, No.
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post #9 of 20
Quote:
Originally Posted by PaulWog View Post
Theoretically, could a Gigabyte P67-UD4 motherboard (which supports crossfire x8/x8) support a 6970 and a 5870? As in... tri-SLI on a crossfire motherboard?

Just wondering theoretically (since the 6990 may be just like the 5970 in supporting 6970/6950 I presume).

Or is a regular x8/x8 motherboard only good for two single GPU units, and not a double-GPU card and another GPU card?
you question makes no sense, but if you're trying to ask if you can tri-fire with the ud4, i believe you can. just has to be the same series as others have said
post #10 of 20
Quote:
Originally Posted by Kasp1js View Post
HD5970 and a HD5870?
That's because a 5970 is two 5870's.
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