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ATI crossfire

Post Date: 2009-12-09
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red259 View Drop Down
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Posts: 23 		  Quote red259 Quote  Post ReplyReply bullet Topic: ATI crossfire
    Posted: 09 Dec 2009 at 1:28am
I currently am awaiting my new system which will have  a 5850 graphics card. In the future I would like to upgrade to a dual card system and I have some questions.

1. Does my second card have to be a 5850 or can I get a 5870?

2. If my first graphics card was OC do I need to OC the second card and set it at the same settings?

3. How difficult is this to do on my own? I have installed single graphics cards before, but this seems a bit more involved.

Thanks
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DST4ME View Drop Down
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Posts: 36758 		  Quote DST4ME Quote  Post ReplyReply bullet Posted: 09 Dec 2009 at 1:39am
1. 5850

2. best to have them at the same speed.

3. not difficult, its the same as installing a gpu, only thing different is the cf bridge that you will have to connect, which is very easy.

Nvidia Drivers----AMD Drivers
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sjjohns23 View Drop Down
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Posts: 161 		  Quote sjjohns23 Quote  Post ReplyReply bullet Posted: 09 Dec 2009 at 8:13am
I thought the new ATI 5000 series cards would allow you to plug in any card and they would work together and not downclock.  IE he could plug in a 5870 with his 5850 and they would work together just fine in crossfire at their respective rated speeds.  Can Justin confirm?
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Kyu View Drop Down
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Posts: 421 		  Quote Kyu Quote  Post ReplyReply bullet Posted: 09 Dec 2009 at 11:43am
heres alittle chart to help decide
 
 
hope that answers all your questions
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DST4ME View Drop Down
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Posts: 36758 		  Quote DST4ME Quote  Post ReplyReply bullet Posted: 09 Dec 2009 at 4:15pm
you can mix and match but a 5870 + 5850 will do worst then 2 x 5850 in performance.

so its better and cheaper to match still.

Nvidia Drivers----AMD Drivers
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red259 View Drop Down
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Posts: 23 		  Quote red259 Quote  Post ReplyReply bullet Posted: 09 Dec 2009 at 9:09pm
If I throw in a second 5850 should I try to OC to match the other card, down clock the OC card or just plug in the new card as is and leave the OC card alone?
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DST4ME View Drop Down
DS ELITE
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Posts: 36758 		  Quote DST4ME Quote  Post ReplyReply bullet Posted: 09 Dec 2009 at 9:58pm
with 2 cards you won't notice performance gain from oc, I would drop oc and use both stock

Nvidia Drivers----AMD Drivers
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red259 View Drop Down
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Posts: 23 		  Quote red259 Quote  Post ReplyReply bullet Posted: 09 Dec 2009 at 10:57pm
Thank you for the advice.
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DS ELITE
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Posts: 36758 		  Quote DST4ME Quote  Post ReplyReply bullet Posted: 10 Dec 2009 at 3:19am
My pleasure

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<8) slunK parade View Drop Down
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Posts: 798 		  Quote <8) slunK parade Quote  Post ReplyReply bullet Posted: 10 Dec 2009 at 9:33pm
dude two 5850s are pretty close to 1 5970
you wouldnt need to oc, you could probly downclock and have awesome temps and performance
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