When they are available Maybe someone should buy 3 and return the third after testing? I might do this. 
 
This is the kind of removed thing I do to answer these questions

Jediexpress
""Nvidia only supports SLI on 10 series cards""
The title suggests that Nvidia will no longer support SLi in older cards. (i.e. SLi no longer supported on 400, 500, 600, 700 and 900 series cards)..
 
I watched the entire video. And this is what he actually said ""They Only support natively, two cards.  You're welcome to do as many more as you want. But they are only supporting two cards in SLi for maximum performance.""

Meaning 3-way & 4-way will not be getting maximum performance optimizations. 
 

Scarlet-Tech
I 100% agree that this title is extremely misleading.

"Nvidia only supports SLI on 10 series cards" suggests the nvidia is completely dropping all SLI support for cards prior to the 1000 series.

"Nvidia will only officially support 2 way sli with the 1000 series cards" is FAR less click bait.

I doubt older gens are going to be getting optimizations now.

Jediexpress
""Nvidia only supports SLI on 10 series cards""
The title suggests that Nvidia will no longer support SLi in older cards. (i.e. SLi no longer supported on 400, 500, 600, 700 and 900 series cards)...

This is exactly what I thought when I read the title, so it definitely was misleading to me.

The title will cause the thread to get many hits/reads though.

gridironcpj
That's pretty dumb, considering Nvidia is essentially saying "please don't spend more money on our products!"  While it's true that 3-way SLI scaling isn't the best, this becomes decreasingly the case as you increase the resolution.  4K scaling for SLI is much better than 2K scaling for SLI.  Hence, 3-way SLI isn't totally stupid for 4K gaming, especially once we start seeing 4K displays above 60Hz.  While most people won't care about this, I see this as a step backwards.  What are enthusiasts supposed to populate their PCI-E slots with now?
 
Also, SLI support got a lot worse with Maxwell.  I partially blame the influx of new PC gamers, as PC gaming has grown a lot in the last 5 years.  The majority consumer type dictates the direction of the industry.  Since most consumers seem to think a GTX 970 is good enough for "maxing anything" and "smooth framerates," it's no wonder Nvidia stopped caring about the enthusiast who buys 2-4 graphics cards every year.  Unfortunately, I don't see SLI support getting any better with Pascal, given the trend.  My PC would look so empty with just one GPU 

I agree. Might be going AMD on next upgrade if they are allowing 3 & 4-way optimizations.

gridironcpj
That's pretty dumb, considering Nvidia is essentially saying "please don't spend more money on our products!"  While it's true that 3-way SLI scaling isn't the best, this becomes decreasingly the case as you increase the resolution.  4K scaling for SLI is much better than 2K scaling for SLI.  Hence, 3-way SLI isn't totally stupid for 4K gaming, especially once we start seeing 4K displays above 60Hz.  While most people won't care about this, I see this as a step backwards.  What are enthusiasts supposed to populate their PCI-E slots with now?
 

I run surround at 8100x1600 and I pretty much need 3-way SLI. I have tried running just 2 cards for my setup and I don't get acceptable frame rates at high settings, but once I add in a 3rd card games become playable for me. Not to mention my monitors are dual link DVI only, so to run surround on only 2 cards I'd have to buy an active DP to Dual link DVI adapter and those cost around $100. I'm not willing to spend that $100 on an adapter especially if 2 cards won't even give me the performance I need for my setup.
 
If it turns out to be true that 3-way SLI is no more, I am completely screwed. I sold my 3x 980Ti's so I could get 3x 1080's. During the Nvidia launch event live stream Jen-sun talked about the surround improvements and correction offered with the GTX1080. Well isn't Nvidia surround the best use case for 3 way SLI? Why would they make improvements in surround technology if they aren't going to let you run enough cards to power it? Not to mention, they don't want more of my money? I'm willing to buy 3, but they only want me to buy 2. I don't get it.

People that buy 3 are a very small minority, and yet the money they have to spend to optimize or even to make it work properly makes the return of investment not worthwhile. So I believe they decide to just cater to the majority of 1 card and 2 cards SLI.

Should say 2-way SLI in the title. A 4-way SLI user can still say they use SLI.

Sajin
I doubt older gens are going to be getting optimizations now.

I initially clicked because the title made it sound like they are dropping support. Dropping support isn't an optimization. I wonder how many people came in because of the title thinking it meant something else.

When I first looked, it said "Nvidia only supporting SLI with 1000 series cards" which was extremely misleading. The title I can see now is much better. I hadn't refreshed for a while before posting, so it was confusing initially.

Oryato
Should say 2-way SLI in the title. A 4-way SLI user can still say they use SLI.

SLI & 2-way SLI mean the same thing.

Title looks much better at this time. While 2 WAY SLI and SLI may mean the same thing, it is still confusing, as I always refer to having an SLI rig.  I don't feel the need to say 3 way every time.