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HD 6970 Crossfire VS HD 7970

post #1 of 71
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Title says it. I just bought a new 2500k and a new 1155 motherboard. I already have two 6970's in a crossfire setup, but I was on a quad core Phenom II, and I believe the chip was bottlenecking my GPU's drasticly. So with my new setup with two 6970's be better than a single 7970? Performance wise. I game on an eyefinity setup.
post #2 of 71
Yes 6970cfx is faster
    
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post #3 of 71
Not technically. I dont think 2 6970's are always faster. 2 cards seems to be in the case faster than 1 but I always refer to a site and compare video cards and on some tests its different than others. For example

http://hwbot.org/compare/videocards#1888,1762_2-17,29

In this case there almost identical or a little slower on one test. But I mean I really prefer the newer cards and if you have the extra money you always can and double up later. I think the 7000 series is a outstanding series. The 6000 series was kinda of a waste IMO. They 5xxx series is a amazing series as well. So if you have the money I would personally upgrade, but then again its your call. I still think Eyefinity would run fine but on games like Battlefield you may have a issue or two, just dont run it on Ultra in that case.

Hope this helps!
post #4 of 71
Quote:
Originally Posted by FuZiioN View Post

Not technically. I dont think 2 6970's are always faster. 2 cards seems to be in the case faster than 1 but I always refer to a site and compare video cards and on some tests its different than others. For example
http://hwbot.org/compare/videocards#1888,1762_2-17,29
In this case there almost identical or a little slower on one test. But I mean I really prefer the newer cards and if you have the extra money you always can and double up later. I think the 7000 series is a outstanding series. The 6000 series was kinda of a waste IMO. They 5xxx series is a amazing series as well. So if you have the money I would personally upgrade, but then again its your call. I still think Eyefinity would run fine but on games like Battlefield you may have a issue or two, just dont run it on Ultra in that case.
Hope this helps!

actually your quite wrong, the 6970 cfx is quite a bit faster, i have tested my cfx setup vs a single 7970 and there is no question that the 6970cfx is alot faster in games that properly support crossfire.
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post #5 of 71
6970 cfx is faster, no question about it!

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post #6 of 71
6970 cfx will obviously be faster outright, but the difference is under the curve. That said two card cfx/sli support is usually very good across the board sampling all games. It's only the worst games, with horrific coding that will show problems with two cards. Even games like Skyrim scale on two cards now. Go above two and well, you'll run into more issues.

Anyways, keep your cards they are still freaking fast. There's a bonus though. Put them under water and you can push massive amounts of volts thru them because 69xx cards have almost non-existent OCP. OCP is killing the 79xx as far as overclocking goes, talk about raining on your parade.
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post #7 of 71
Imo a 7970 with a good overclock can compete very well with a high end 6 series CFX setup, and the 7970's performance will only improve with driver releases. Personally I'd go with the single card every time.
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post #8 of 71
i have seen a lot of benchmarks, and i tend to see that my 3 6970's is on par with 2 7970's. So 1x7970 = 1.5x 6970.
So yes a 6970 CF will be faster then a 7970.
post #9 of 71
I just came from a 6950 (unlocked) + 6970CF to a single 7970 then 7970CF. I can tell you that yes 6970cf is faster than a single 7970 but not as much as some may believe. Also, gameplay on a 7970 or 7970 cf for that matter are much much smoother.
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post #10 of 71
I used to run unlocked 6950's in crossfire and I was pretty pleased outside of the heat and noise, but once OC'd my HD 7950 (1200/1750) comes dang close in performance. Really, really impressed with the 79xx series cards once they stretch their legs.
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