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Can you run a 5850 and 6850 in crossfire?

Last response: in Graphics & Displays
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November 17, 2010 6:24:56 AM

Hi,

i was looking at getting another 5850 so i had 2 running in crossfire config, but i have noticed that my local PC parts store has the new 6850 cheaper than the 5850's. So i was wondering if i could just get one of them and run them together OR do the cards need to be exactly the same?
a b U Graphics card
November 17, 2010 6:33:58 AM

Nope. The first two digits has to be the same for CF. Otherwise change your motherboard to those Lucid Hydra motherboards.
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a b U Graphics card
November 17, 2010 7:05:34 AM

Need to be identical cards (apart from the brand).

:( 
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a b U Graphics card
November 17, 2010 11:38:56 AM

reccy said:
Need to be identical cards (apart from the brand).

:( 


This only holds true for Nvidia, the cards have to be the exact same...

ATI cards just have to be within the same series, so you can crossfire a 5850 & 5870 but you cannot crossfire a 5770 and 5830.

** Keep in mind that when crossfiring two different cards like a 5850 and 5870, the 5870 will indeed scale down to match the 5850 speeds.
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a b U Graphics card
November 17, 2010 12:04:24 PM

jonpaul37 said:
This only holds true for Nvidia, the cards have to be the exact same...

ATI cards just have to be within the same series, so you can crossfire a 5850 & 5870 but you cannot crossfire a 5770 and 5830.

** Keep in mind that when crossfiring two different cards like a 5850 and 5870, the 5870 will indeed scale down to match the 5850 speeds.


Serious? Well thats pretty impressive to be fair.. Hopefully there will be a hybrid system down the line soon, where you can mix and match both ATI/AMD and Nvidia Cards and any model aswell to see FPS/Quality increases..

Would be awesome to utilise a 580 with a 460 and see some gains..
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November 17, 2010 12:09:00 PM

^ actually you can mix and match using the mobo's with lucids hydra tech. I think the fuzion board of MSI have it. Info already provided by hell_storm2004 up top. Still new tech though. Give them time to straighten things out.

edit: really should refresh first..sorry..XD
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a b U Graphics card
November 17, 2010 12:13:23 PM

Cheers guys, just looking now Thumbs up!!!

Ohhhhh, Looks one for the future, but according to the review, it hasnt developed well or is just a big flop.. :(  gutted
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a b U Graphics card
November 17, 2010 12:21:29 PM

yea. my next actually gaming rig is gonna be a licid hydra, it doesn't scale as well as crossfire or sli and costs a bti mreo but its a tech i wanna support and see get better and better.. plus i envision an amd/nvidis card mix for kicks and giggles
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a b U Graphics card
November 17, 2010 12:25:30 PM

hopefully when i come to upgrade my system next time around in 2/3 years they would of developed this hybrid config to such a point, its hard standing and stable with good preformance benifits.

Would be awesome to mix and match models and see performance increases..
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a b U Graphics card
November 17, 2010 12:30:59 PM

In fact, i read an article about Lucid actually teaming up with vendors to put the lucid technology on the actual video cards instead of the motherboards... something about it scaling better, etc... i'll see if i can find it.
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a b U Graphics card
November 17, 2010 12:39:21 PM

Was just thinking that it would be good technology to have 2/3 sectors in the graphics segment of the game. Primary Graphics, Secondary, Thirdly.

So you could have a GTX 470 focusing soloy on the Primary and have a 460 on the secondary segment, and a 450 on the third. Sort of an extended version of physx but not linked to Nvidia.

Reading it through it doesnt makes sense, but it does in my head :lol: 
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a b U Graphics card
November 18, 2010 5:35:55 AM

It is in its preliminary stages not that good. But in future may grow. Only thing that would be detrimental to the Lucid Hydra would be the serious competition between ATI/nVidia. nVidia doesn't even like ATI drivers on a PC if an nVidia card is in there, let alone an ATI card.
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July 22, 2011 2:59:02 PM

Has anyone actually tried putting a 6850 and a 5850 in crossfire? I know AMD says it won't work, but supposedly they are quite similar architecture, yes?
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a b U Graphics card
July 22, 2011 3:26:07 PM

Woah... this is an old thread. Anyways, they wont work. The first two digits of the model numbers must be same.
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a c 125 U Graphics card
July 22, 2011 3:48:07 PM

lol... This thread already covers it. You can only do it with a lucid logic hybrid board. Regardless if you already have a 5850 might as well get another because they're faster than 6850s.
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a c 271 U Graphics card
July 22, 2011 3:57:56 PM

This topic has been closed by Mousemonkey
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