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Cant deside between 7970 cf and gtx titan... - Page 4

post #31 of 80
Bang for your buck - 7970
E peen - Titan

7970 Xfire will be a good 30+% faster then a single titan while being substantially cheaper
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post #32 of 80
Thread Starter 
Quote:
Originally Posted by Stay Puft View Post


7970 Xfire will be a good 30+% faster then a single titan while being substantially cheaper

Will be tri-fire 7970 soon biggrin.gif Just bought my 2x 7970 for cf, will I notice a big increase in performance all around from these 6870 cf lol.
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post #33 of 80
Quote:
Originally Posted by itz.clint View Post

Quote:
Originally Posted by malmental View Post

what models.?

I bought the his 7970 3gb Model Number: H797F3G2M which are reference cards. Just to be sure on how crossfire works my cards will have 3gb total since they are mirrored but overall 9gb, so whatever gpuz says Im using in ram per game I just divided it by 3 to get total being used per card? Is this correct since Ill be using tri-fire. So for example 2500 total vram / 3 cards = 883.3Mb Per card.
you bought triples...? Tri-Fire.?
post #34 of 80
Quote:
Originally Posted by rdr09 View Post

^this here is interesting. don't you run out of bandwidth before vram?

OC the ram pretty high to make up for the bandwidth issue to get close to 192/sec, but in Crysis 3 2xSMAA goes up to 2.3GB, 4xMSAA goes up to 2.8GB.
Since he's using three monitors, I would go with 4GB cards. He already bought two 7970s, but the 3GB VRAM will still limit his ability to enable 2xAA or higher.

Like I said, Experience > Performance.
Either 680 4GB or Titan if I had three monitors. If you plan to play games not as demanding like BF3, FC3, or Crysis 3, 3GB could be fine.

But... I rather have more power/VRAM that I can use. You'll regret not having enough.
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post #35 of 80
Thread Starter 
Quote:
Originally Posted by malmental View Post

you bought triples...? Tri-Fire.?

Will have 3 soon, bought 2 for now so I can crossfire biggrin.gif So about my question regaurding crossfire how does it work, I didnt get an answer about it. I know it mirrors the cards with limiting 3 gb of vram but so I will have 9gb total out of three cards. So I just take my total vram usage and divided it by three since thats what I will have etc. Would go more but quad but my motherboard doesnt support it lol only 3way, plus apperantly it is really pita so I have heard.
Edited by itz.clint - 3/12/13 at 10:09am
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post #36 of 80
Quote:
Originally Posted by itz.clint View Post

Quote:
Originally Posted by malmental View Post

you bought triples...? Tri-Fire.?

Will have 3 soon, bought 2 for now so I can crossfire biggrin.gif So about my question regaurding crossfire how does it work, I didnt get an answer about it. I know it mirrors the cards with limiting 3 gb of vram but so I will have 9gb total out of there cards. So I just take my total vram usage and divided it by there since thats what I will have etc. Would go more but quad but my motherboard doesnt support it lol, plus apperantly it is really pita so I have heard.
not sure it works like that....
I need a refresh on that, BRB.
post #37 of 80
Quote:
Originally Posted by itz.clint View Post

Will have 3 soon, bought 2 for now so I can crossfire biggrin.gif So about my question regaurding crossfire how does it work, I didnt get an answer about it. I know it mirrors the cards with limiting 3 gb of vram but so I will have 9gb total out of three cards. So I just take my total vram usage and divided it by three since thats what I will have etc. Would go more but quad but my motherboard doesnt support it lol only 3way, plus apperantly it is really pita so I have heard.

I run quad with a MVE and it's pretty sweet even tho the only game i've been playing lately is CS:Go but it looks beautiful across 3 screens.
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post #38 of 80
Thread Starter 
Am i right..? So just say a game uses 2.5gb vram out of 3gb then divide it by 3 for tri-fire and you get so much per card.
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post #39 of 80
Quote:
Originally Posted by itz.clint View Post

Am i right..? So just say a game uses 2.5gb vram out of 3gb then divide it by 3 for tri-fire and you get so much per card.

In crossfire the memory is mirrored so it's only really 3GB total
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post #40 of 80
Quote:
Originally Posted by itz.clint View Post

Am i right..? So just say a game uses 2.5gb vram out of 3gb then divide it by 3 for tri-fire and you get so much per card.

No. 3gb vram is all ya got, it's not added up cuz each gpu is independent and needs its own vram. Some apps like AB will count up all the memory when it displays vram used, but in that case you divide by the number of cards you have.
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