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Can an HD 6850 and an HD 6870 be crossfired?

Last response: in Graphics & Displays
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September 13, 2012 6:40:34 PM

I'm looking at upgrading my graphics setup, but I'm a little too cheap to buy an HD 7870, which is what I was looking at originally. I already own an Asus Radeon HD 6870 and I read in a Wiki article that as long as the two cards are in the same series theycan be crossfired. I wasn't sure if that was true or not. If it is, I was thinking of just getting an HD 6850 and crossfiring it with my 6870. Would it work?

More about : 6850 6870 crossfired

September 13, 2012 8:03:56 PM

It would work, yes. The 6870 isnt that much more expensive though.

But it should work. Just make sure to get the cable that connects the 2 cards.
September 13, 2012 8:42:46 PM

I'm pretty sure you can but the 6870 will function as a 6850 as far as core speed.
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September 13, 2012 9:42:25 PM
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The 6850 WILL crossfire with the 6870 though I usually find it best to run the 6850 with a 6850 and 6870 with a 6870... this way, they scale nicely. But as geekapproved has said, the 6870 will function as a 6850 (this downgrade will waste some of the 6870's performance).

If you can, just invest in another 6870... it will be a cooler setup if you can get another resembling Asus 6870.
September 13, 2012 10:09:24 PM

That is what I would recommend as well.
September 14, 2012 12:58:54 PM

ndositwe said:
The 6850 WILL crossfire with the 6870 though I usually find it best to run the 6850 with a 6850 and 6870 with a 6870... this way, they scale nicely. But as geekapproved has said, the 6870 will function as a 6850 (this downgrade will waste some of the 6870's performance).

If you can, just invest in another 6870... it will be a cooler setup if you can get another resembling Asus 6870.



Ok, thanks! The only thing is, The Asus 6870 is just so huge that I don't think I can fit two of them on my Mobo. That and it takes two power connectors already, and I don't have enough connectors to use the six pin adapters.
September 14, 2012 1:04:17 PM

So it looks like I'll be getting a 6870 then! :D 

One more question though, since I'm a noob at crossfire, is there anything special that I need to do in order for them to work together? Like, I should just be able to install the second one, then connect the two via crossfire cable, and install the software for the second one as well? And does it matter which one I plug my monitor into?

Thanks
September 14, 2012 4:12:52 PM

Pretty much. I think you need a different driver thingy from the website, but I'm sure you'll figure it out.
September 15, 2012 1:16:13 AM

Awesome, thanks!
September 15, 2012 1:17:50 AM

Best answer selected by BugbusteR5.
September 15, 2012 8:29:17 AM

This topic has been closed by Mousemonkey
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