Sorry for another should I upgrade thread but I trust your opinions here.
 
I currently run a GTX 780 3-way SLI set-up at 5940 x 1080 in NVidia 2D surround. I am most likely going to upgrade to the GTX 1080.  The main issue is my budget does not allow for me to purchase 2 of these right away.  My plan is to get another GTX1080 prior to EOL for the card but not for a while.  I am not exactly rocking the latest higher res monitors but they still work for me.
 
So my questions are:
1.  Would I see a boost over my 3-way GTX 780 cards with 1 GTX 1080 in 2D surround?  If so how much?  I suspect so but I am unsure of the amount of boost.  Given that the GTX 1080 is similar to 2 way 980 SLI, I assume it could easily handle my monitor config and resolution with decent frame rates and settings.
 
2.  When I buy a second GTX 1080 would my EVGA Bridge (the original LED, 3-way) allow the faster transfer rates between cards or would I need to get a better one?  I understand that the new NVIDIA hard bridges have the max performance for 2-way SLI and some of the other LED hard bridges would offer faster performance as well but not quite as fast.  I also realize that older SLI bridges would work but that could limit max performance on the 1080's.
 
I may upgrade my monitor set-up next year.  Typically I look at GPU's every 2-3 years.
 
Thanks
 
Mark
 
 

The cards haven't been released. It's impossible to properly answer until we have cards in hand. We can only give you the same information that YouTube can give at this time, and if it hasn't been tested on youtube, there is no proper answer that will be 100% accurate for you.

While we would all love to speculate, but it's best to wait another 2 weeks for end users with a near identical setup to test this, and be able to give you proper answers.

Also can anyone from EVGA verify the speed of your original LED SLI hard Bridges that were released in 2013 or 2014?

Sajin

mpoffo
Also can anyone from EVGA verify the speed of your original LED SLI hard Bridges that were released in 2013 or 2014?

According to this video they should be 650MHz.

I have seen this video.  This is the version of the EVGA SLI bridge I have:
 

I vaguely recall EVGA talking about the some possible issues with higher resolutions with these bridges and I think at one time they were offering to swap out the bridges if needed with an updated version.  The new Nvidia ones are around 650 Mhz.  There is reference in the video to older LED bridges that are faster than the old floppy bridges and run at 650 as well but I am not sure if this also includes all the EVGA LED bridges, I assume at least their newer ones.  I suppose if I end up running 2-way SLI I should probably get one of the new bridges to maximize performance.

Sajin
Time to call evga on the phone. Let us know what they say. 

I took your advice and called EVGA Tech support.  I was told that the current EVGA SLI LED bridges (old and new)are not HB bridges nor capable of those speeds.  They would work as a standard SLI bridge (already aware of that).  So while my old one may work I will not be maximizing my performance with my current EVGA LED SLI Bridge.  I am not sure which bridges Tom was referring to in the video.  Perhaps a previous one that Nvidia themselves put out.
 
The tech support person did mention that they may possibly make new HB SLI bridges in the future.

mpoffo

Sajin
Time to call evga on the phone. Let us know what they say. 

I am not sure which bridges Tom was referring to in the video.  Perhaps a previous one that Nvidia themselves put out.

Hope he was talking about these bridges as I already own the 3-way one.