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GTX570 SLI vs. 6970 Crossfire

post #1 of 48
Thread Starter 
Debating going back to a dual card setup.

I've had plenty of multi card configs in the past (most recently a pair of 6870's and a set of GTX470's).

Given that I can get a set of Asus 570's or 6970's, with the difference being only $45 (the 570's are cheaper), looking for informed opinions as to which would be the better option.

No plans to go multi-monitor any time soon.


Thoughts?
Edited by Robilar - 3/15/11 at 1:05pm
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post #2 of 48
The 570s in SLi give very good performance and scale well. However, if you don't space them well they tend to get quite hot. The 6970s in crossfire are driver dependent, like all crossfire ATI cards. I haven't tested the new drivers since I sold my ATI cards - but they would be right under the 570s if not on par with GOOD drivers. I hear 11.4 is suppose to do wonders.

http://www.tested.com/news/radeon-6990-vs-radeon-6970-crossfire-vs-gtx-570-sli/1985/


A review of those cards.
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post #3 of 48
Thread Starter 
The board I am using provides an extra slot of clearance between the first and second card so airflow will not be an issue. The case also has a 200mm fan in the door positioned over the GPU area.
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post #4 of 48
Depends on your resolution and if you fancy using multi monitors. If you answered yes, then go AMD. Using multi card setups at high resolutions, 570s have a hard time keeping 6950s behind them let alone 6970s.
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post #5 of 48
super simple. you are 1920x1080. you are not maxing out the 1.25 vram on that card in anything this year at least. get the 570s. if you bought the 6970s then it would be only cause of future proofing. they are both pretty even but the 6970 takes off at high res mainly because the 570s choke on a lack of vram.

Also if you like to overclock the 6970s will be better. 11.4 has done very well for the cards. AMD usually is pretty good with drivers for their latest, and ok with drivers for one previous generation behind current tech. Nvidia is alot better at spitting out drivers for current/previous tech.

The 6 series has amazing driver stability compared to the 5 series. Amd cards do have coil whine however and are the hotter of the two sets. When you xfire those cards they will get loud(fan wise) cause of the heat coming off of the second card.

edit: I see the slots are x16. that will be very good with them spaced out further apart and the door fan positioned by them.

I also think 6970 at your current res is a waste. I would get 6950s and be happy with the -9fps or so that you will get hit with and happy with the +$140 that you pocket

http://www.newegg.com/Product/Product.aspx?Item=N82E16814127562

excellent fan for a hot card.
Edited by soilentblue - 3/15/11 at 1:14pm
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post #6 of 48
Thread Starter 
Not too concerned about the sound profile. However, I had nothing but problems with paired 6870's (and plenty of issues with paired 470's mind you).

Performance would be my first priority followed by stability (read: bug free usage).

I have no intention of going multi-monitor but have been looking into a higher end 30" monitor as my next purchase.
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post #7 of 48
Quote:
Originally Posted by soilentblue;12743827 
super simple. you are 1920x1080. you are not maxing out the 1.25 vram on that card in anything this year at least. get the 570s. if you bought the 6970s then it would be only cause of future proofing. they are both pretty even but the 6970 takes off at high res mainly because the 570s choke on a lack of vram.

Also if you like to overclock the 6970s will be better. 11.4 has done very well for the cards. AMD usually is pretty good with drivers for their latest, and ok with drivers for one previous generation behind current tech. Nvidia is alot better at spitting out drivers for current/previous tech.

The 6 series has amazing driver stability compared to the 5 series. Amd cards do have coil whine however and are the hotter of the two sets. When you xfire those cards they will get loud(fan wise) cause of the heat coming off of the second card.

You realize the 69xx reference cards use digital vrms. They don't have coils, go take a look.
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post #8 of 48
You need to buy 2 6950's for 269 shipped then unlock them to 6970's and save yourself some cash...
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post #9 of 48
Since your playing at 1080p, looks like 570 SLI is your answer. 6970s don't benefit that much from overclocking compared to 570s. I went from 4653 performance GPU score (not overall) to 6164 from stock to my sigs on 3DMark11 so I would see SLI benefit a lot more from this.
I found this
http://3dmark.com/3dm11/251823
(source http://www.overclockers.com/forums/showthread.php?t=663620 also a 4.3ghz test on this page too)
950 core 6970 GPU score with 4GHz was at GPU score 5273
http://3dmark.com/3dm11/835675?show_ads=true&page=%2F3dm11%2F835675%3Fkey%3D9LTfzsZEzNUWVQWFKhu3E6uTQLcyxm
vs mine at 4ghz my GPU score was at GPU score 6164
So its likely a 570 SLI would probably be better at your resolution when these cards are SLI'd
But some games just run better on 6970 and vice versa of course. This is just raw performance on the same benchmark
Edited by LivingChampion - 3/15/11 at 1:24pm
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post #10 of 48
But the 570's are like 350 right now, While 6950's are $100 less, and fully unlock able. You will get the same performance between the 6970's (unlocked 6950's) and gtx 570's but you'll save $200
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