Help with upgrading to triple 3d, please..

Szyrs

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So I'm trying to figure out how best to spend more money, or if I shouldn't bother.. I should mention that I'll be posting a host of other hardware related questions in another section/forum, so I'll try to keep this specific, but probably fail.

At the moment I'm gaming on 1 x Acer HN274H 3D Monitor, or 3 little LG ones in 2D, off 2 x EVGA GTX 660ti 3GB SC+ in SLI (i5 25k/RoG Gene-z, cos someone will ask). I've just been given a second Acer 3D monitor though, and I can get a 3rd cheap(ish). I'm having a look at upgrading a few things on another PC, so I'm considering rebuilding the two and upgrading as I go. As I've only been using SLI a few months and I've not done any really heavy triple monitor stuff, my questions are centered around the ability to drive the 3 Acer monitors in such a way that I wont need to upgrade my gaming rig until it becomes embarrassing..

In order to keep this specific to the forum, I'd like to focus simply on gpu selection.

Will 2 660ti's handle the 3 Acer monitors or should they have a card each? I ask in terms of fps as well as lifespan/longevity. I'm aware that 3 cards wont equal anything close to 3x performance.

If so, what benefit would quad sli over triple?

In many of the bigger motherboards, those that support 3 or 4 way sli, they have differing lane configurations on the pcie rails. I don't understand a great deal about hardware engineeringing, but from what I've been led to believe, nothing in the near future is going to choke pcie, so what real world significance are these rail configurations? For example, would you see real world difference on a motherboard running quad sli at 8x/8x/8x/8x, as opposed to 8x/16x/8x/8x, or 8x/4x/8x/4x. Motherboard sel;ection is another matter, my curiosity is over the significance of these rails, for gaming, over the next four years or so?
 
Solution


You do not need one card per monitor. In fact, 3D Vision Surround does not support 3-way SLI. The 3rd card will sit idle or do PhysX if able. There is no point in getting a 3rd card as it won't do anything for you in 3D Vision Surround...
The main problem you are facing is 3D Vision does not support 3-way SLI. I do not know about 4-way, but 660ti's don't support 4-way anyways. For the most bang, you'll be limited to 780 SLI.

As you may already have figured out, as you too game in 3D, 3D still looks great at reduced settings, so you may just have to give it a go with your current 660ti's and assess how much more settings means to you.
 

Szyrs

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Yes I did realise that about the quad. The 3d vision surround website has a configuration gadget thing that says that even a single card is capable but it goes up to 3-way sli for the 660ti. The resolution is maxed on a single card but I imagine the performance would improve greatly over 3 cards. Below the specs it has wiring examples and it seems to only support one 3D monitor per card, or have I got that wrong?

http://www.geforce.com/hardware/technology/3dvision-surround/system-requirements
 


You do not need one card per monitor. In fact, 3D Vision Surround does not support 3-way SLI. The 3rd card will sit idle or do PhysX if able. There is no point in getting a 3rd card as it won't do anything for you in 3D Vision Surround. It will help in 2D, but not 3D.
 
Solution


I don't think you fully understand how 3 monitor gaming works. It is treated as a single frame. Each card renders a frame for all 3 monitors at once, then sends it to them. While one card renders one frame, the other card starts work on the next frame, and they alternate frames.

A 3rd card may be nice for 2D surround. I was just letting you know it won't help for 3D Vision surround.

EDIT: Ok, you may have gotten it right. You were talking about the left eye and right eye images, which I believe is correct in that each card renders for one eye, though I have not seen it written down as such, it only make sense.