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SLI 580 or Tri-SLI 570 or 680? - Page 4

post #31 of 45
Sell your computer, Go intel and grab two gtx480's for under $500 bucks or one gtx680. No reason to get more than two gpu's.
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post #32 of 45
Thread Starter 
I've taken everyone's crticisms and help to heart and have come up with a list of upgrades to be purchased in the next couple months (unless some part of it sucks).

W0Ebm.jpg

I've attached an image of what I plan on getting as long as everything remains in stock when it comes time to buy it. I decided on getting the GTX 680 with the intention of getting a 2nd one later on down the road for ultimate powah and just to show off as I plan on switching over to water cooling later on this year. I'm also switching over to Intel with the 2600k for the overclocking ability mainly. Want to see if I can get a stable 5 GHz OC biggrin.gif and I believe the motherboard is going to be Ivy Bridge compatible so it leaves even more room for expansion.

As far as games go, I play the crap out of them. I have BF3, but have resigned myself at the moment to only run it on High-Custom as my 2 x 6850s just can't handle Ultra so I have to turn down the AA and AF. I've mainly been playing Skyrim (which I've been having the same problem in but I just suffer through it because it looks fantastic) as I'm still waiting for Max Payne 3, Hitman: Absolution and Assassin's Creed 3.

Let me know what you guys think and thank you all again for your input. It's been a phenomenal help and has provided some lulz as I keep trying to tell my wife how I'm changing my plans and watching her eyes just glaze over.
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post #33 of 45
Thread Starter 
Quote:
Originally Posted by SimplyTheBest View Post

Sell your computer, Go intel and grab two gtx480's for under $500 bucks or one gtx680. No reason to get more than two gpu's.

I'm not gonna sell my computer tongue.gif I'm putting it back into my old case and giving it to my wife when I've replaced all my stuff.
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post #34 of 45
Looks good to me, although you really dont need a 1200w psu, even on 2 680's and should you decide to watercool. Youd be fine with the ax850 by corsair.
post #35 of 45
Quote:
Originally Posted by guitarmageddon88 View Post

1. So you say that a 2gb 6950 xfire setup that does a consistent, lets say, 100fps, that drops to say, 50 fps in the hard parts with lots of processing, is the same as a 1gb 6950 setup that suffers from a lack of vram and actually jolts down to 50fps due to the lack of vram which affects more than just raw fps? Both readings will show the same min/max/avg fps, but the reasons one is dropping are different from the other. Thats why I say, show me the readouts, either via gpu-z, or via afterburner, charted over time in relation to GPU usage, then we can see what its really about.
Also, if you use the command "render.perfoverlayvisible 1" in game, while I was on the 570's the gpu line would spike all over gods creation when settings were maxed. of course, I could turn it to medium settings, ssao on, and no msaa, and it wouldn't spike, but that's not my goal. Now I get a nice consistent flat line with everything maxed to the utmost.
2. I would prefer to run msaa over fxaa any day of the week in its current form because either via NVCP or via injectors, it looks just plain bad compared to msaa. And if Im going to spend a decent chunk of change on videocards, I may as well go all the way, spend the extra 100 bucks as I did over the 570's I did have, and get the card that lets me max every single setting there is. Otherwise, I wouldve kept my 5870 which stuttered just as bad as SLI 570's under maxed bf3

Well, shoot for $100 more a card vs. 570's, that's one thing. That's a different scenario that what we're talking about here though wink.gif

And I'm not being critical of your choice there, nor anyone's choices for that matter. Hell, if you got bucks to throw around and thus have the luxury of insisting on the highest possible settings at all times no matter what ... go for it, that's awesome! And I'm jealous.

But what I'm debating is the idea that 1.5GB 580's are inadequate for 1080p, since you did not originally specify 570's or 580's in the post I replied to.

In 'backup' for what I've said, it appears that the only difference that having extra vram MAYBE makes on BF3 MP is the level of AA and AO you can run.

Have a good look over the review here.

If you study the whole page and MP section carefully, you'll discover that 1.5gb SLI 580's actually hold their own VERY well even against 7970's in xfire and 680's in SLI in terms of max playable settings.

In single player at 5760x1200, you have to lower MSAA from 2x to 0x, and lower AO by one notch, with 580SLI vs 680SLI or 7970XF.

And here's what you're looking at in terms of max playable settings in MP:
680 SLI (2 gb) - 5760x1200, 0xAA, FXAA, Motion Blur On, HBAO, otherwise maxed
7970 XF (3gb) - 5760x1200, 0xAA, FXAA, Motion Blur Off, SSAO (lowered from HBAO), otherwise maxed
580 SLI (1.5gb) - 5760x1200, 0xAA, FXAA, Motion Blur Off, AO Off, otherwise maxed

So as you can see, even at 5760x1200, the 2gb 680's clearly outperform the 3gb 7970's in terms of max playables, and the 1.5gb 580's aren't far behind the 3gb 7970's at all. I'll leave it to others to extrapolate on what these result implies about the supposed inadequacy of 1.5gb of vram in BF3 MP ... given that these tests are done at +333% more pixels than 1080p.

AFA you analysis of the 1gb vs 2gb card goes ... I'd bet money that when you see a chart that says this:

6950 2gb
Avg: 39
Min: 31

6950 1gb
Avg: 39
Min: 31

It's pretty much guaranteed that the FPS over time charts (like on [H]) will look identical for both cards.

What you're speculating, that there's different 'causes' of the min fps level, but yet this results in the exact SAME minimum fps reading AND average FPS reading for the two cards ... well, lets just say ... Occam's Razor has a bone to pick with your logic wink.gif
Edited by brettjv - 4/16/12 at 11:06am
    
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post #36 of 45
Sounds like we have ourselves a battle here....biggrin.gif
post #37 of 45
Naw, no battle, just two different angles to looking at the situation at hand.

I think it's also illustrative to read through this review as well.

It shows that one has to go to some pretty extreme lengths in order to get the SLI 3gb setup to differentiate itself from the SLI 1.5GB setup. And almost w/o fail, you're only looking at a small AA advantage for the 3gb cards, even at 5760x1200.

Given that entire battery of tests there, my conclusion would be that it's going to be beyond extremely rare that one would ever see an advantage to 3gb 580's over 1.5gb 580's ... at 1080p.
    
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post #38 of 45
Thread Starter 
You know of any benchmarks where they put the 680 against anything in SLI or Xfire? I kinda want to see how that would stack up against 2 580s.

Awesome article by the way thumb.gif
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post #39 of 45
Quote:
Originally Posted by Big Shabazz View Post

You know of any benchmarks where they put the 680 against anything in SLI or Xfire? I kinda want to see how that would stack up against 2 580s.
Awesome article by the way thumb.gif

Usually you can see those comparisons by going to any of the guru 3d reviews (im sure there are other sites too, guru is just my favorite) and reading the different benches. Most of them 580 SLI should be in there.

http://www.guru3d.com/category/Videocards/
post #40 of 45
this you're looking for?

http://computerhardwareupgrades.blogspot.com.au/

found it here . . .

http://www.overclock.net/t/1233063/gtx-680s-vs-hd-7970s-the-ocn-battle-royale-part-2/320
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