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Crossfire 6970s vs 4GB GTX 680 FTW Edition

post #1 of 9
Thread Starter 
I currently have 2x Sapphire 6970s and I'm getting absolutely fed up with the drivers/crossfire compatibility. Literally about 20% of my games work with crossfire and don't experience some type of negative scaling. I have to end up using a single 6970 most of the time anyways. I'm thinking about selling these on Ebay and getting the EVGA 680 FTW. I can probably get around $400 for both cards so I won't have to spend much to make the switch.

Question is, what kind of performance difference am I going to see? I run on a single monitor at 1920x1200. Is it worth spending ~$100 to switch and get rid of these issues? Only reason I got two 6970s in the first place was because of Amazon's pricing mistake last November when I got them for $220 a piece at the time.

or maybe you would recommend a different 680 model?
Edited by OmegaX - 10/17/12 at 11:20pm
post #2 of 9
No point in getting a 4GB model over a 2GB model. Find whatever's cheapest.
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post #3 of 9
Quote:
Originally Posted by OmegaX View Post

Question is, what kind of performance difference am I going to see?


Roughly speaking, two 6970 well overclocked = one 7970 = one 680.
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post #4 of 9
Thread Starter 
Quote:
Originally Posted by tsm106 View Post

Roughly speaking, two 6970 well overclocked = one 7970 = one 680.

I'm running them at stock, and the majority of the time using one card because the compatibility is so bad. Most AAA titles work well, but I play a lot of games that simply have negative scaling or texture flickering with crossfire enabled.
post #5 of 9
Quote:
Originally Posted by tsm106 View Post

Roughly speaking, two 6970 well overclocked = one 7970 = one 680.

I wouldnt say well overclocked, stock 6950's would probably be equal to 1 7970, since I've benchmarked higher than people with 3 7970's/680's
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post #6 of 9
Quote:
Originally Posted by JPigg View Post

Quote:
Originally Posted by tsm106 View Post

Roughly speaking, two 6970 well overclocked = one 7970 = one 680.

I wouldnt say well overclocked, stock 6950's would probably be equal to 1 7970, since I've benchmarked higher than people with 3 7970's/680's



I've tested this out, since I've had quad 6950s and quad 7970s at the same time. And, in pretty sure your rig doesn't bench higher than mine. thumb.gif


Fyi, my trifire 7970s with a 2600k did well over 184fps to your quads at 134fps in heaven.
Edited by tsm106 - 10/18/12 at 12:07am
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post #7 of 9
Quote:
Originally Posted by tsm106 View Post

I've tested this out, since I've had quad 6950s and quad 7970s at the same time. And, in pretty sure your rig doesn't bench higher than mine. thumb.gif
Fyi, my trifire 7970s with a 2600k did well over 184fps to your quads at 134fps in heaven.

Yes you were one of the ones that beat me, but alot of tri-fire 7970's/680's didnt
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post #8 of 9
Quote:
Originally Posted by JPigg View Post

Quote:
Originally Posted by tsm106 View Post

I've tested this out, since I've had quad 6950s and quad 7970s at the same time. And, in pretty sure your rig doesn't bench higher than mine. thumb.gif
Fyi, my trifire 7970s with a 2600k did well over 184fps to your quads at 134fps in heaven.

Yes you were one of the ones that beat me, but alot of tri-fire 7970's/680's didnt


That's a bit delusional regarding the 7970s, cuz you only beat one which was powered by an amd cpu. Bottleneck! That said, quad cayman maxed out is only 9fps faster than crossfire tahiti maxed out. I wonder how you got greater than 100% scaling though? My crossfire 6950s at 970/1480 could only do 63fps. Double that and you get 126 fps, but you're 8fps higher...
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post #9 of 9
OP get a HD 7950 for 300 bucks. overclock it to 1.15 Ghz and you don't lose much in performance. But you save yourself all the problems you have faced with CF .

http://www.techpowerup.com/reviews/Sapphire/HD_7950_Vapor-X/8.html
http://www.techpowerup.com/reviews/Sapphire/HD_7950_Vapor-X/31.html

BF3 1920 X 1200 4x AA

HD 7950 (1135 Mhz) - 74.8
HD 6970 - 40.3

http://www.newegg.com/Product/Product.aspx?Item=N82E16814202006
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