My Korean monitor just died so I grabbed a Dell P2715Q 4k monitor. My current video card is a GTX690. I was planning on building a new rig next year when the next iteration of chips from nVidia and Intel arrive.

For now it looks like my choices are:

1. Keep my single GTX690
2. Add a second GTX690
3. Get two 980's in SLI
4. Get a Titan X

Adding a second GTX690 is within my budget but I really don't want to drop $1k plus on video cards at present. Will a second GTX690 do me any good or shoudl I jsut play at lower res / settings until I build a new rig next year?