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ATI 7950 Vs 2 x HD 6950

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  • Graphics Cards
  • Corsair
  • Graphics
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Last response: in Graphics & Displays
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February 9, 2012 6:38:10 PM

Here is my current build.

Asrock z68 Extreme 7 mobo
i7 2600k
4 x 4g Corsair "Vengence" 1600
Corsair 850 enthusiast psu
Corsair H60 cooler
2 x OCZ vertex 120g SSD
1 x WD 1 TB black 7200 6gbs
2 Sony 40" BX420 side display
1 Sony 40" EX523 middle display

Here is my dilemma. I originally put in a Sapphire 6850 in the build thinking it would give enough horse power to most games on full at 1920 x 1080. The card has done well. Even when I had my small 22" monitors on the wings. But now it looks as if I must upgrade with the addition of the bigger side displays. There just isn't enough there to run these BIG displays @ 5760 x 1080.

So with the arrival of the new 7950's it would seem to be the way to go. And my original thought. However. @ a price of $500 bucks. I could go with a crossfire set up of say 2 x MSI Twin Frozer III 6950's for about $600 bucks. Have 4 gb of memory vs 3 gb. But the future proofing on the crossfire would be a bit stale. And I could add another 7950 laterSince there is not much yet on this comparison I would like to hear your thoughts.

Thanks in advance....

More about : ati 7950 6950

a b U Graphics card
February 9, 2012 6:52:47 PM

Memory doesn't work like that in Crossfire. If you Crossfire 2 2GB cards together, you still have 2GB of RAM. It writes the same stuff in both cards RAM, not add them together to get 4GB.
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February 9, 2012 7:03:21 PM

Chose 7950 and later CF. That is the future proof card. However, the price of 6*** will drop once full lines of 7 series cards in the market and so make your wise choice that you are happy with!
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February 9, 2012 7:29:11 PM

if you have money than even better.. go with 7970
later if needed add up one more..

7970 runs almost as fast as 6990 or 590

so it is really good card
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February 9, 2012 9:55:21 PM

Bassically what orbital said. if you can afford it get 7970 if you cant just get a 7950 and cf it later
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February 9, 2012 9:57:32 PM

As VetteDude noted, multiple GPUs have SEPARATE RAM banks, that are not added together; that's because each GPU can't really touch another GPU's RAM, so each card's RAM will have a complete copy of all textures, etc. (this applies as well to dual-GPU cards; that "6 GB" 7990 functionally works as a 3GB card)

I've not really seen much information on how well a CrossFire (or SLi, for that matter) setup would scale across a number of monitors that didn't cleanly divide with the number of cards; while EyeFinity may be just fine with doing 3 displays on 1 card, I've not seen any testing done on how it might handle trying to split 3 displays across 2 cards; normally "CrossFire/SLi" setups with multiple monitors worked simply by automatically treating the cards as separate; simply run 1/2/3 monitors per card.

In the end, I'd suggest going with the 7950 over the second 6850. Would likely yield the least pain in the end.
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a b U Graphics card
February 9, 2012 10:24:11 PM

nottheking said:
As VetteDude noted, multiple GPUs have SEPARATE RAM banks, that are not added together; that's because each GPU can't really touch another GPU's RAM, so each card's RAM will have a complete copy of all textures, etc. (this applies as well to dual-GPU cards; that "6 GB" 7990 functionally works as a 3GB card)

I've not really seen much information on how well a CrossFire (or SLi, for that matter) setup would scale across a number of monitors that didn't cleanly divide with the number of cards; while EyeFinity may be just fine with doing 3 displays on 1 card, I've not seen any testing done on how it might handle trying to split 3 displays across 2 cards; normally "CrossFire/SLi" setups with multiple monitors worked simply by automatically treating the cards as separate; simply run 1/2/3 monitors per card.

In the end, I'd suggest going with the 7950 over the second 6850. Would likely yield the least pain in the end.


The OP was looking at 2x 6950 not 6850 (typo maybe?)

people run cfx/sli with 3-5 monitors all the time, it scales like you would expect when playing 5760x1080 on one card with an 80-98%+ increase with the second card.

the two 6950 would handle the 3 screens great, but i'd go with the 7950 (although less powerful than cfx 6950) you have a future to upgrade to crossfire and get alot more out of it, otherwise you'd be looking at upgrading from the 6950 setup alot sooner than expected.
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February 17, 2012 11:28:12 PM

Best answer selected by driftfisher665.
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a b U Graphics card
February 17, 2012 11:46:42 PM

7970 all the way bro, then add another once you feel you need it ;) 
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