Is this 1080p or 1440p?

Only SLI if you plan on getting a 1440p+ resolution monitor in the future.

I have the basic gtx 970 in SLI i can play games pretty smoothly on the Samsung UD590 UHD monitor! I would say even if you got a second monitor that's 1080p I wouldn't upgrade, you can't really game on both at once and using one for a game and the other for a web browser isn't really that big of a difference for the GPU.

...and you are running the latest drivers???

I'll have my 2nd GTX 970 FTW on Monday for SLI Dragon Age Inquisition, although I play at 2560x1600 res. When I play at 1080p I sit between 50-60 FPS most of the time on Ultra -- which I'm okay with for a pause-and-play RPG like Dragon Age. (And BioWare caps cutscenes to 30 FPS anyway). I need SLI though because at 1600p I get 30 FPS or less on ultra. :(
 
Also I plan to try overclocking to 1500Mhz on both cards, have you overclocked the 970 yet?

Avalon
I recently purchased a EVGA GTX970 FTW. It generally runs everything but maybe not quite maxed out (depends on the game). Now, Dragon Age Inquistion is out and the 970 is having troubles on Ultra settings. I did upgrade the video driver with no change. I also understand that this game is new and not optimized completely yet as its ok on Ultra in some areas and not others. Generally though, would it be a waste to get a 2nd 970 for only one monitor (27")? Would there be general perfromance benefits from SLI regardless (if a game supports it or not)?
 
i7-44770K (OC'd 4200mhz)
16gigs G.Skill Trident X ram (2400mhz)
EVGA GTX970 FTW (4gig)
Asus Maximus VI motherboard
Samsung 840 PR0 SSD (boot) 2 x WD black 4tb (storage) 
 

 
This is odd we have the same mb, same cpu ( my cpu running stock at the moment from benchmarking) , same sdd, my ram is 1866 but 16 gb as well. Where we differ is the monitor I was running the 24 inch 144hz asus monitor x 3 and running on ultra just fine. The same day I wanted to see if there was going to be a huge difference if I sli'd and I wasn't able to run 3 monitors sli'ed the game kept crashing but on 1 screen at 1080 or 1440 it was amazing. Therefore I would say get the second one it is amazing. 

I got a news flash for ya, Dragon Age is a ****ty PC console port.  All the cut scenes are hard capped at 30 FPS, doesn't matter how many cards you have for that game lol.
 
If you get a 2nd card you can always turn on DSR and have the resolution down sampled from 4K to 1080p and you will get an idea of what kind of FPS to expect once you buy a 4K monitor.

mistermister

TahoeDust
I have been kind of kicking around the same idea.  I play at 2560x1080 ultrawide and am a little underwhelmed with my fps while trying to max out Far Cry 4.  I have been wondering if it would be worth the extra horsepower at the resolution I play.

Im running a 29" 2560x1080 UW monitor with SLI 970s (reference, non OC). These things absolutely CRUSH FC4 on my PC. Set VSync (I opt for adaptive) and its a rock solid 60FPS all day long. Ungoverned, Itll chew out massive FPS. Needless to say 'Ive got everything maxed out in the game. 

That is what I was wanting to hear.  I love playing on the 29" UW and I knew I may have to go to more GPU than I was used to when I bought it.  I was just hoping that move would be a little more in the future.  I guess I will start looking around for a SSC 970 to match the one I have.

Gtrizzyy

Avalon
I recently purchased a EVGA GTX970 FTW. It generally runs everything but maybe not quite maxed out (depends on the game). Now, Dragon Age Inquistion is out and the 970 is having troubles on Ultra settings. I did upgrade the video driver with no change. I also understand that this game is new and not optimized completely yet as its ok on Ultra in some areas and not others. Generally though, would it be a waste to get a 2nd 970 for only one monitor (27")? Would there be general perfromance benefits from SLI regardless (if a game supports it or not)?
 
i7-44770K (OC'd 4200mhz)
16gigs G.Skill Trident X ram (2400mhz)
EVGA GTX970 FTW (4gig)
Asus Maximus VI motherboard
Samsung 840 PR0 SSD (boot) 2 x WD black 4tb (storage) 
 

This is odd we have the same mb, same cpu ( my cpu running stock at the moment from benchmarking) , same sdd, my ram is 1866 but 16 gb as well. Where we differ is the monitor I was running the 24 inch 144hz asus monitor x 3 and running on ultra just fine. The same day I wanted to see if there was going to be a huge difference if I sli'd and I wasn't able to run 3 monitors sli'ed the game kept crashing but on 1 screen at 1080 or 1440 it was amazing. Therefore I would say get the second one it is amazing. 

Hi,
 
I didn't know this thread carried on, lol. I have been tweaking Dragon Age along with first attempts to OC'ing the video card (will start a new topic asking for help). With the game on Ultra with the GTX970 FTW I get a benchmark of min-40fps max-50fps (dips into 30fps at times). Its playable but I get what might be a micro-stutter and/or possibly my mouse polling (Logitech G9) fighting the games settings. Lowering the graphic settings and its better. I would think 40-50fps would be smoother. The game devs along with Nvidia will fix things I'm sure. About a monitor, I did look at the 27" 144hz model a ways back (last year?) but it disappeared from sale; manufacturing issues? I am using Asus 27" now, 60hz. I was also looking at a IPS panel or a higher resolution Samsung TN panel.