GTX 690 Still relevant

Solution
Its on par with 1050 TI in all except 3k processing units (vs 768 of 1050 TI). Raw power of this was so high, that tech did not catch up yet.
430 W under load is a killer. And even if one unit is half slower than current ones, 3k of them will do the work. It should be on par with 1070. If you live in canada and heat up your home with PC then 690 is still strong.
Its on par with 1050 TI in all except 3k processing units (vs 768 of 1050 TI). Raw power of this was so high, that tech did not catch up yet.
430 W under load is a killer. And even if one unit is half slower than current ones, 3k of them will do the work. It should be on par with 1070. If you live in canada and heat up your home with PC then 690 is still strong.
 
Solution
Best Answer is misleading by far, and the above two comments are correct or at least close enough.

1) GTX690 is similar to 2xGTX670's in performance (2x GTX680 GPU's but lower frequency)

2) 2GB per GPU, so for SLI (specifically Alternate Frame Rendering) that's only 2GB usable by the game

3) similar to a GTX1070?
Not even frikking close.
https://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_1070/24.html

The GTX1070 is about 3X as powerful as a single GTX670 or GTX950. If a game gave you 50% scaling with a GTX690 vs a GTX670 (i.e. 60FPS vs 40FPS) that would still only be HALF of what a GTX1070 can do.

*So please don't pull statistics out of your ASS!!

4) SLI (AFR) also can cause issues like stuttering, or no scaling at all.

Summary:
In gaming the GTX690 without SLI-AFR support is similar to a GTX950, and at best probably not much better than a GTX970 and that's assuming the 2GB framebuffer is not exceeded causing stutters.
 


I'm sorry to say for any current or future readers that this answer is simply wrong.
 


https://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_1070/21.html
https://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_690/23.html

https://tpucdn.com/reviews/NVIDIA/GeForce_GTX_690/images/wow_2560_1600.gif
https://tpucdn.com/reviews/NVIDIA/GeForce_GTX_1070/images/wow_2560_1440.png

In terms of raw power ? It's still is. Looking at supported tech, textures, power ITS DAMN OLD. Don't get me wrong. Anyone who have it , change it. But raw power from this thing is still impressive