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6970 cfx vs 680

post #1 of 22
Thread Starter 
Hi my mate is replacing his 550 ti and he is asking me for advice. At the store where we buy our stuff, two 6970s are cheaper than one 680. Now I am wondering what he should buy, because though 2 6970s should theoretically have more power than a 680, I have been looking around and seen that people have been having driver problems with 6970 cfx. Any advice?
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post #2 of 22
You will be experiencing micro stutter with the cfx solution, so I would go with the single GTX 680, plus the power consumption, heat, and noise would be considerably lower.
post #3 of 22
Thread Starter 
Quote:
Originally Posted by Sebba513 View Post

You will be experiencing micro stutter with the cfx solution, so I would go with the single GTX 680, plus the power consumption, heat, and noise would be considerably lower.

As illuminating as your answer is. It did not answer my question. I was wondering what would provide the best performance when gaming things like, for example bf3. Could you expand of what micro stutter is, as I do not understand it. How much power consumption are we talking about?
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post #4 of 22
I would say go with a single card.

And if you do go multicard in the future, stick with nvidia as I've never really had a problem with SLI, yet I hear crossfire has more problems than SLI.

http://www.guru3d.com/article/asus-geforce-gtx-680-asus-directcu-ii-top-review/21

Look at that review. It shows the gtx 680 with pretty much double the fps of the 6970, and you aren't going to get 100% crossfire scaling in BF3, so the gtx 680 would provide better performance than 2 6970's.
Edited by icehotshot - 5/3/12 at 12:39am
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post #5 of 22
Micro Stuttering

Performance wise, go search on some benchmarks.
post #6 of 22
Example of micro stuttering
post #7 of 22
I have used CF 6950's unlocked to 6970... no micro stuter here.... PEBKAC. That issue aside, its is always best to get the single most powerful GPU you can afford. This will allow you to upgrade to a second card later should you need more performance.
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post #8 of 22
At this point I would get a highly OCable gtx 680.

Depending on the benchmark:

http://www.anandtech.com/bench/Product/515?vs=555

The 6990 (or lower clocked 6970 crossfire) is quite a bit better.

Don't know what these power and noise issues are, it all depends on which card. 650w of power draw (un-overvolted) is great.

The 680 needs a good bit of oc, I'm guessing 1450mhz plus to match a 6990, though that isn't a guarantee. personally at this point i would go with the fancy new cards. I don't believe this microstutter issue, there are a few articles that go indepth on it, I've never faced it myself, though my array of games is limited. You will max everything on 1080p at atleast 40fps though if you go with the 6970s. And a good few clock to 1000+ on the core like mine do.

Most will give you 60fps maxed btw, the exceptions being BF3 with MSAA, does not work on AMD cards to my knowledge and Witcher 2 with ubersampling, the 40fps average on my highest oc's, 1050mhz/1500mhz (core/memory), significant overvolting, 3.8ghz i7 930 @ 1080p, though that game is the most intensive that i know of except for Metro with DoF on.

I'd say the 680 at this point, but I love my cards. They still don't max everything I wish they would, but no single card solution I want could do that.

edit: As being both an SLI and Crossfire owner at this point, I do not intend to ever get two cards again. Profiles can be annoying, from both companies, and cfx/sli is not always supported. The performance boost is great though, but hopefully by the time the next gen comes around, even the witcher 2 EE will be maxed by a single card, or atleast I hope so. And watercooling is limited, as you have to purchase for a second card and increase your rad amount. This doesn't hold true for everyone, I'm just saying I personally will try not to use two cards from now on.

Both are good options, 6970 tris only scale well at multi monitor resolutions, triple scales poorly for everything under 1440p.



TL:DR gtx 680 for now, though the 6970 is a great option, power draw for both is minimal, both play games at great frame rates, both scale well in dual cards, and microstutter is on a person to person basis.
Edited by Spykerv - 5/3/12 at 12:49am
   
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post #9 of 22
Thread Starter 
Quote:
Originally Posted by Sebba513 View Post

Example of micro stuttering
I see your point. However he was running two 260s, is this still a problem?
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post #10 of 22
Quote:
Originally Posted by insertacoolname View Post

I see your point. However he was running two 260s, is this still a problem?

http://www.tomshardware.com/reviews/radeon-geforce-stutter-crossfire,2995.html
http://www.extremetech.com/computing/93908-understanding-micro-stuttering-bane-of-high-end-pc-gamers
http://techreport.com/articles.x/21516

It depends. SLI on the 5xx was particularly good at it, depending on the game.

I'm sure the 6xx has series has improved upon it.

The 69xx series is notorious for it, but it depends on person to person. I'll take back my previous statement and say that I did infact see it, on one game:

Witcher 2.

Different drivers though and setup:

12.1 CAP 1
3.66ghz cpu
880/1375 mhz

There was a considerable amount of stutter, I forgot about that incident.

When I played without microstutter:

11.8 CAP 2
3.8ghz cpu HT off
1050mhz/1500mhz
Edited by Spykerv - 5/3/12 at 12:55am
   
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