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Sapphire 7870XT XFire'd with a 7950?

Last response: in Graphics & Displays
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June 20, 2013 1:33:31 PM

I currently have a Sapphire 7870 XT. It's a fantastic card, but I've been wanting to XFire it for some time now. The obvious choice would be another 7870XT just to keep them matched, but then I got to thinking about using a Sapphire 7950 as my primary, and XFiring it with the 7870XT. Most of my games already run at max settings (except Crysis 3) on a 50" plasma, but I'd like to ensure that all my games can sustain frame rates at or above 30fps at minimum. Sleeping Dogs maxed out drops below 30 from time to time. Any thoughts on this?

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

I also plan on upgrading my Gen 1 Sabertooth 990FX MOBO to the Gen 3 which supports PCI-E 3.0 (FINALLY). The extra GPU bandwidth should definitely help.
a b U Graphics card
June 20, 2013 1:39:56 PM

I don't think you can crossfire different cards - they have to be the same (although they don't have to be the same manufacturer), as far as I know.

I could be wrong though.
a c 101 U Graphics card
a b À AMD
June 20, 2013 1:41:09 PM

Yes; you can.
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June 20, 2013 1:53:14 PM

Normally, you can crossfire any cards within the same series, I.e. 78xx to 78xx or 79xx to 79xx. The 7870XT is different because it uses a "de-tuned" 79xx Tahiti chip on a 7870 pcb, which means it can only be crossfired with 79xx cards or another 7870XT.
a b U Graphics card
June 20, 2013 2:00:56 PM

phrogusmc said:
Normally, you can crossfire any cards within the same series, I.e. 78xx to 78xx or 79xx to 79xx. The 7870XT is different because it uses a "de-tuned" 79xx Tahiti chip on a 7870 pcb, which means it can only be crossfired with 79xx cards or another 7870XT.


Ahh, I see.

I'll remember this for the future. Thanks :) 
!