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Sli surround

post #1 of 18
Thread Starter 
I know there's already a few posts on here about it but I can't find the answers I'm looking for in them.
I want to add another 570 to my sig and go with 2d surround hopefully before bf3 comes out.
What everyone seems to be saying is that the 570 doesn't have enough VRAM to really handle surround.
What if I picked up this http://www.pccasegear.com/index.php?...ducts_id=18065 for my second card?
Would it handle surround alright?
I also don't have 3 monitors yet but I'm thinking of getting 1x 3D 120hz and then two other 1920x1200. Mostly just to give me the option of going 3D easier down the track.

Also, will my psu be able to handle everything if I did sli the two 570s
Edited by Sporkisian - 8/22/11 at 7:01pm
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post #2 of 18
1) 1.28GB VRAM is not sufficient in the book of many people.

2) Even if your second card is 2.56GB, only half of this VRAM will be put to use because the 2 SLIed cards must work in sync and so the 1.28GB VRAM of the 1st card just becomes the limit.
So, it is better that you get two 2.56GB GTX570s to do SLI. This is a perfect setup.

3) For Nvidia Surround to work, the 3 monitors must match in resolution + refresh rate + sync polarity. If you get a 3D 120Hz monitor and two other non-matching monitors, make sure they have these 3 factors matched up.

4) Your Corsair AX-850 should have no problem to handle two GTX570s.
post #3 of 18
Don't mean to threadjack but my question kinda fits his dilemma. I have 2 gtx 570s the 1.2gb version in sli. Im adding another 570 1.2gb for a 3 way sli. Will adding this 3rd card help at all in terms of handling high resolutions on a triple surround setup? I know the 2.5gb gtx570's are the best option but I need to work with what I have atm. As a reference crysis 2 runs at 4800x1080 on dx11 ultra everything at 50-60 fps on my rig. Anything more and my fr goes down considerably so I am hoping the 3rd card will allow me to increase the resolution and maintain 50-60 fps.
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post #4 of 18
Thread Starter 
I understood that the monitors just had to share a common refresh rate, resolution etc. So I thought it would just mean that whil in surround the 120hz would just be running at the 60hz of my other two monitors.
Ideally I would like to get two 570 2.5g but if that would mean having to buy both of them and really I could just grab 580's for an extra hundred or two
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post #5 of 18
anything less than 2GB will probably be an issue.

1.5 is still low for only 2560x1600, let alone 3xHD
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post #6 of 18
Lets break it down a bit.

1: Surround with 3 different monitors will not guarantee success in making it work. Its not eyefinity. Surround doesn't work well using 3 different monitors. Especially if one of them is a 3D monitor.

2: 2xgtx 570s aren't enough, unless you are willing to reduce quality, to where you will feel its not worth it. Not just with memory, but also power wise, to keeps things smooth.

3: If you SLI two different types of cards, like that evga and your asus, the lowest common settings will be used. AKA both cards will run with 1.28GB of memory and the lowest clock, so its going to be a complete waste of time and money.

4: If you want 3D, get 3D. Don't mix 3D and 2D monitors. It will be a waste.

5: If you can give up on the 3D notion and still want surround, sell your 570 and get a 6990 and set up eyefinity, which will give you better options (like using 3 different monitors, more memory, better GPU, will cost less than nvidia options).


To be short, 570s are nice, and will SLI great if you want to run in 3D on a single monitor, but for surround, I would not recommend.
I run 3x470s about a year and a bit earlier, on much less demanding games in surround, and it was not very fun sometimes. The lack of memory was hurting, even with 3 cards.
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post #7 of 18
I just recently tried out Surround after picking up a second 560 Ti. Let me tell ya, 1 GB of vram is NOT ENOUGH. Well, it technically is, but isn't... On a game like L4D2, I'm just below the limit at max settings (minus AA). And it runs at 60 fps smoothly. Now, load a game like Crysis 2 with the DX11 and high-res updates, and 1 GB is a problem. Even at just 1920x1080, I hit the vram limit. When I load it with 5040x1050, it works, but not real well. It'll play fine, running usually around 40 fps, but there are short freezes when it goes over the 1 GB limit. If you really plan to play in Surround all the time, with games coming up, I'd say look at AT LEAST 2 GB. I'll find the thread with a comparison here shortly:

Also,
Quote:
Originally Posted by Defoler
2: 2xgtx 570s aren't enough, unless you are willing to reduce quality, to where you will feel its not worth it. Not just with memory, but also power wise, to keeps things smooth.
I don't think that's the case... I am running 2 560 Tis, and in surround it runs GREAT as far as fps goes on all of the games I've tried with surround (L4D2, F3AR, Crysis 2 (minus the vram limit)). I always have playable fps. So I'd imagine that you shouldn't have much of a problem with 2 570s. I suppose it also depends on which games you play and at what res and settings.

sndstream: Your limiting factor (from my testing) will be your vram. Just 2 560s allow me to get good framerate in Crysis 2 with surround, but I go past my vram limit at 1 GB.

Have a look at this thread: http://www.overclock.net/nvidia/8016...ream-card.html

And you'll see that the main limiting factor isn't raw power of the card, but vram.
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post #8 of 18
Thread Starter 
Ahh okay, this is my first real build so i wast aware that the two cards will use the lowest VRAM. After what everyones said im thinking about just selling my 570 and grabbing two 3gig 580s, from what i've read and heard they seem to be able to handle the load pretty well.

The reason i was going to grab one 3d monitor and then 2 others is just basically becausei dont have the cash for 3 3d but i like the idea of having one for if i didnt want to play in surround (if that makes sense). Really im just torn between 3d and surround but i think i like the idea of surround more.

Anyone whos had experioence with the surround, what i've seen in reviews an videos etc is that the whole screen just gets stretched sort of thing and everyone seems to have the start taskbar on the far left hand side, can that be configured so its all on your middle screen?
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post #9 of 18
I just thought I'd chime in here as I am running 2x 560Ti 2gb In surround and they handle the majority of games admirably and I run my resolution at 6060x1080, so it is definitely up there!

On the 3gb 580's, if you can afford 2x them in SLI now, then I would go with that option, as I was limited by fund when I went with the 560Ti's in SLi, but they definitely are the pick for budget surround (or 2x 6950's for Eyefinity).

You can also check here for usable comparions
post #10 of 18
Quote:
Originally Posted by Reloaded83 View Post
I just recently tried out Surround after picking up a second 560 Ti. Let me tell ya, 1 GB of vram is NOT ENOUGH. Well, it technically is, but isn't... On a game like L4D2, I'm just below the limit at max settings (minus AA). And it runs at 60 fps smoothly. Now, load a game like Crysis 2 with the DX11 and high-res updates, and 1 GB is a problem. Even at just 1920x1080, I hit the vram limit. When I load it with 5040x1050, it works, but not real well. It'll play fine, running usually around 40 fps, but there are short freezes when it goes over the 1 GB limit. If you really plan to play in Surround all the time, with games coming up, I'd say look at AT LEAST 2 GB. I'll find the thread with a comparison here shortly:

Also,


I don't think that's the case... I am running 2 560 Tis, and in surround it runs GREAT as far as fps goes on all of the games I've tried with surround (L4D2, F3AR, Crysis 2 (minus the vram limit)). I always have playable fps. So I'd imagine that you shouldn't have much of a problem with 2 570s. I suppose it also depends on which games you play and at what res and settings.

sndstream: Your limiting factor (from my testing) will be your vram. Just 2 560s allow me to get good framerate in Crysis 2 with surround, but I go past my vram limit at 1 GB.

Have a look at this thread: http://www.overclock.net/nvidia/8016...ream-card.html

And you'll see that the main limiting factor isn't raw power of the card, but vram.

That's exactly it. You are sacrificing quality, and a lot of it, for surround smoothness.
Yeah, you can run every game at 5760x1080 at 200 fps with a single card, by dropping all the quality settings to minimum.

For example, you won't get to have good quality and physx even at low in mafia 2 with two 560s.
Nor in BF3 which will be a bit demanding, or crysis 2 in dx11 and tess working,

So if you play at lower res or low settings, where is the fun of it?
Might as well get a a 3D monitor with 2x560s and in my opinion, you will enjoy more.

I'm sorry, but in my opinion, playing surround on lower settings or lower res just to make it able to play, is a bit silly.
Try playing crysis 2 with 1 monitor at full settings, and I think you will enjoy it more from the flowing tess, great textures, better ambiance and lighting.
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