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680 gtx sli or tri sli

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  • Graphics Cards
  • Gtx
  • SLI
  • Graphics
Last response: in Graphics & Displays
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February 12, 2013 11:44:41 AM

I'm building a system and got the sabertooth x79 motherboard. I see it has 2 pci 16x slots and 1 8x slot. I was hoping to do tri sli with 680 gtx's because I hear it reduces microstutter and I'm gaming on a rather large display and don't mind the overkill...

my question is as follows

1. Will putting a 3rd card in this mobo slow things down since 1 slot is 8x?
2. What performance difference can I expect to see with tri-sli vs dual

More about : 680 gtx sli tri sli

February 12, 2013 3:42:25 PM

loll 60 fps is playable but, a dual is good enough :l
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a c 217 U Graphics card
February 12, 2013 3:53:41 PM

cheebamaster said:
I'm building a system and got the sabertooth x79 motherboard. I see it has 2 pci 16x slots and 1 8x slot. I was hoping to do tri sli with 680 gtx's because I hear it reduces microstutter and I'm gaming on a rather large display and don't mind the overkill...

my question is as follows

1. Will putting a 3rd card in this mobo slow things down since 1 slot is 8x?
2. What performance difference can I expect to see with tri-sli vs dual


Unless that large display is a 4k monitor, 2 680 SLI is more than enough. The size of the display has zero impact on performance. The resolution and refresh rate is all that matter.

You may have heard wrong about the 680 3-way SLI advantage. Do you have any articles that test this? I believe you heard from someone who saw an article that compared microstutter on CrossfireX, and found 3-way CrossfireX reduced microstutter. I've seen that article, and it was found that SLI in general has less microstutter issues to begin with. AMD has also started fixing their microstutter issues, so the article is out dated anyways.

I have never seen an article that showed 3-way SLI reduced microstutter.
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a b U Graphics card
February 12, 2013 3:55:02 PM

Apparently tri sli 680's is the optimal GPU setup, but I can't see any instance where you could ever need more than dual sli, even on a large screen. Maybe if you have like 5k x 1200 resolution, or triple monitor 3D. But even then, you'd be close to max settings in most games that will play in those formats.
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a b U Graphics card
February 12, 2013 4:51:57 PM

http://www.anandtech.com/show/6697/asrock-fatal1ty-x79-...

Read this entire article and look at the charts to see what you can expect from 2- and 3-way SLI.

It's also worth noting the lack of appreciable difference in FPS regardless of number of GPUs between a very expensive mobo and a mainstream board like the Extreme4 (that cost me $90 - just sayin').
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a b U Graphics card
February 12, 2013 4:58:10 PM

Just stick with 2. Three way is a waste of monies. Heck 1 was probably enough lol.
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a b U Graphics card
February 12, 2013 5:04:03 PM

Its not like you need to buy them all at once. Get two, then see if you need a third after testing them for a bit. Also if your putting that many cards together using 670's makes much more sense, you save a huge amount of cash and don't really lose any performance.
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February 12, 2013 5:06:15 PM

1. No, 8x won't slow anything down.
2. Ideally you'll see a 50% gain, but realistically it'll be 25-30%.

The usefulness of SLI depends on the resolution of your monitor and the game. SLI really shines at high resolutions and the game needs to be supported by an SLI profile. (Pretty much all modern games nowadays)
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a c 91 U Graphics card
February 12, 2013 5:07:02 PM

Yep. That motherboard is way more expensive then needed.

Also, for the love of god, don't get 680s.

They're only 5% faster than a 670, but they're 25-30% more expensive.
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February 12, 2013 5:19:25 PM

A GTX 670 is a GTX 680 with 1/8th of the shaders fused off, giving the GTX 680 ~14% more compute potential. Memory bandwidth is still the same though, so the 14% gain will only be fully realized in heavy-compute loads (pretty much any geometry/texels).

Personally I'd rather have two 680s than 3 670s, for the games that refuse to work with SLI or only utilize one GPU.

Edit: counting the clock rate increase on the 680, it comes out to 26% more compute potential.
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a c 217 U Graphics card
February 12, 2013 5:26:24 PM

Fokissed said:
A GTX 670 is a GTX 680 with 1/8th of the shaders fused off, giving the GTX 680 ~14% more compute potential. Memory bandwidth is still the same though, so the 14% gain will only be fully realized in heavy-compute loads (pretty much any geometry/texels).

Personally I'd rather have two 680s than 3 670s, for the games that refuse to work with SLI or only utilize one GPU.

Edit: counting the clock rate increase on the 680, it comes out to 26% more compute potential.

While it is true that the 680 is more than 5% faster than a 670, it isn't 26%.

Here is a comparison:
http://www.hardocp.com/article/2012/05/14/geforce_680_6...

You'll see the improvements are up to 13%. Probably averaging around 8% faster.
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