Had a quick mess about with my new monitor. It's great and feels enormous compared to the old one.
The 770 struggles a bit at 1440p though so I'll need to run at below the native res in modern games until I get a new GPU.
Still, 1080p is an improvement over the 1050p I'm used to.
There were several older games I used to run in extreme DSR resolutions so I'm sure they'll run fine in 1440p.
I bet TitanFall would look great!