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Unlocked 6950 + Normal 6950

post #1 of 6
Thread Starter 
Currently I have an unlocked 6950. I am thinking of crossfiring with another 6950 that may not unlock. I just wanted to check that this would work properly. Will this be the same as the 5000 series where you can have a 5850 at stock clocks with a 5870 with its stock clocks and work fine?

Thanks for any help
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post #2 of 6
Quote:
Originally Posted by guitar_man_94 View Post
Currently I have an unlocked 6950. I am thinking of crossfiring with another 6950 that may not unlock. I just wanted to check that this would work properly. Will this be the same as the 5000 series where you can have a 5850 at stock clocks with a 5870 with its stock clocks and work fine?

Thanks for any help
Yes, they will work fine in crossfire at its own core/memory clocks and voltages as in 58xx series.
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post #3 of 6
YES it will be like cross-firing an HD-6970 with a HD-6950 which you CAN do ... just that you'll end up with performance on par with 2 X-Fired HD-6950's is all. You may either want to pick up one of the HD-6950's with a BETTER chance at Unlocking, say oh I dunno the TOXIC card or a MSI PE/OC TwinFrozrIII or the Sapphire DIRT3 edition ... or even a SAFER bet for only about $60 more than the TOXIC on NewEgg pick up the Sapphire HD-6970 and you'll end up with performance on par with 2 X-Fired HD-6970's guaranteed!


Edit: DERP! just saw Auckland, NZ never mind the NewEgg link or prices my bad
   
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post #4 of 6
yo another fellow kiwi
It will work for sure but as others have said the performance will be that of 6950 crossfire. However clock for clock the 6950 and 6970 are only a few % within each other so if you overclock them it will be all good.
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post #5 of 6
Thread Starter 
Great so because they can work at their own clocks etc. The performance of unlocked 6950 + normal 6950 will be ever so slightly more than normal 6950 crossfired right?
Edited by guitar_man_94 - 10/29/11 at 2:40am
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post #6 of 6
Yes. I have an unlocked reference 6950 OC'd to 890/1375 and an MSI 6950 TFIII at 900/1550. So they don't need to be both unlocked or even at same clockspeeds. Of course if the other card was significantly slower it might hamper performance in CF, but unlocking shaders only gives you 0-5% more performance in games. Most of the extra performance comes from higher clockspeeds.
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