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3x 7950s or 2x 7970s for 5760x1080?

Last response: in Graphics & Displays
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February 24, 2013 12:57:20 AM

Okay so I'm debating what graphics card arrangement I should go with for my 5760x1080 res setup. I currently have 2x 6850s and they can only run Dirt3 at low detail settings at this resolution (technically it is 6016x1080 due to bezel compensation).

I'm wondering which configuration would be better for powering this res in order to run any game I want at max res for 60+ fps.

If I have to I will go with 3x 7970 but I don't know whether it's even necessary, although I've heard Crysis 3 can bring anything to it's knees so maybe it'd be worth the investment???

Currently 3x 7950s would run me $900 even. 2x 7970s are around $800. So is it worth it for the $100 more? Or should I just go with 3x 7970s for ~ $1200?

My main concern is being able to run any game at max detail at 6016x1080. If that means justifiying 3x 7970 then so be it. Oh and yes my power supply is up to the challenge and sports enough power connections for any of these configurations (the max config would require 6x 8pin pci-e power connectors and my psu has 8x 8pins).

Any input and / or related experience with this type of scenario is greatly appreciated.

More about : 7950s 7970s 5760x1080

a c 175 U Graphics card
February 24, 2013 3:18:56 AM

I would go with the 2x7970. This give you an option to buy another 7970 to have 3x7970.
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February 24, 2013 3:22:02 AM

2 scales better than 3, go for the 7970's.
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February 24, 2013 3:22:27 AM

I'd go with 3x 7950 because it's $100 dollars cheaper and it can outperform 2x 7970s and who really needs 3x 7970s anyway thats overkill unless you have more than 3 screens
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a c 166 U Graphics card
February 24, 2013 3:22:28 AM

The more you add, the worse support and micro-stuttering become. So 2xHD7970s is good.

Although I really would suggest at least considering Nvidia SLI instead. SLI compatibility is a lot better than Xfire.

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a c 175 U Graphics card
February 24, 2013 3:30:16 AM

lloydloo said:
I'd go with 3x 7950 because it's $100 dollars cheaper and it can outperform 2x 7970s and who really needs 3x 7970s anyway thats overkill unless you have more than 3 screens

3x7950 is $100 more actually.

Not sure about SLI vs CF reliability but both of them sometimes has issues. But these days CF actually scales somewhat better.
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a c 166 U Graphics card
February 24, 2013 4:47:32 AM

refillable said:
3x7950 is $100 more actually.

Not sure about SLI vs CF reliability but both of them sometimes has issues. But these days CF actually scales somewhat better.

Scales better yes, but fewer games can be made to work on a Xfire setup.
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a c 175 U Graphics card
February 24, 2013 8:59:16 AM

And those games... Will run 200fps maxed without the CF support.
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February 24, 2013 7:56:39 PM

Novuake said:
The more you add, the worse support and micro-stuttering become. So 2xHD7970s is good.

Although I really would suggest at least considering Nvidia SLI instead. SLI compatibility is a lot better than Xfire.



I'm really not interested in Nvidia at the moment. The price/performance ratio for what I'm looking to do is terrible in comparison to what I can achieve with AMD hardware. Not to mention I would like the option of adding more screens in the future, which Nvidia doesn't support.

Its sounding more and more like 2x 7970s is the way to go.

Oh and where are people getting this crazy misconception that more games support SLI than crossfire??? I'm not looking to run Quake 3 with 3 cards in crossfire guys... Almost every modern game will support both SLI and crossfire and if not then it will only support a single card. I'm not generally playing thse one off titles that don't support it so I'm really not concerned.

Has anyone here actually used 2x vs 3x crossfire or SLI with the res I'm using????
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a c 175 U Graphics card
February 25, 2013 10:56:49 AM

Nvidia does also support surround gaming and is not that bad actually in terms of price-performance. But of course I do believe that there is nothing wrong with your choice.
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a b U Graphics card
February 25, 2013 2:14:41 PM

I run 2x 7950's @ 5760x1080. I would recommend going with 2x 7970's so you always have the option of adding a 3rd. My 2x 7950's get me close to maxing most titles with an overclock to push them past a stock 7970ghz edition. So far I havent had any real issues with crossfire. I've only had my 2nd card for a few weeks but the games I've tried (Battlefield 3, Crysis 3, Sleeping Dogs etc...) have all worked great. Going up past 2 cards the returns on the investment are a lot smaller than going with just 2 cards, seems like money isnt an issue so if I were you I would go with the 2 7970's, see how you like it then consider adding a 3rd.
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February 26, 2013 2:35:03 AM

Thanks for the input refillable. If I was building brand new system I may have considered Nvidia but I'm upgrading from 2x 6850s and don't want to hassle with the nightmare that is switching between Nvidia and AMD cards without an OS reload. The thing about the micro-stuttering is a moot point in my eyes since I'm going for solid 60+ frames consistently and the only time the micro-stuttering becomes noticible is at low frame rates.

Thanks for the info about your setup AdioKIP. I'm very much leaning toward 2x 7970s at this point. I still may go for the gusto and just get 3 of them, maybe keep one as a spare? lol

The thing that is bothering me now i that I've seen some benchmarks indicating that the 990fx platform I am running on is a limiting factor in scaling with corssfire and that I would be better suite toward upgrading the whole platform to a z77 or x79. I wish there was more work done on benchmarking and reviewing these kinds of things, especially for triple or quad crossfire or Sli.

When I do purchase my cards I will be installing and benchmarking them in aggregate succession so that I can identify whether or not it is scaling very well. I'll post again on here when I do that. Should be in about a week or so. Any thoughts in the meantime are appreciated.
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a c 175 U Graphics card
February 26, 2013 8:21:24 AM

Stay with your choice of 7970x2.
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March 4, 2013 11:34:44 PM

Best answer selected by every1hasaids.
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March 4, 2013 11:42:03 PM

Went ahead and bought 3x 7970s as they seem to fit the bill and in the most demanding games that really need the extra juice, they scale remarkably well. (adding around +90% fps per card.) And my concerns about the platform really only apply to processor and memory bandwidth usage heavy games such as Skyrim. I don't play Skyrim so I'm not too concerned there, and when the time comes I will jump to the x79 platform and see even better performance from my 3x 7970s. Maybe the 8000s will be out by then and I can pick up a fourth for less than $300? Heheh. We'll see.

As I had said before, I will post another thread in the forums with the results of my setup with 1x, 2x, and 3x 7970s after I receive them and can benchmark them.

Thanks to all for the input!
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a c 273 U Graphics card
March 4, 2013 11:43:49 PM

This topic has been closed by Mousemonkey
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