StingingVelvet: I have never really understood why people connect texture quality to framerate, no offense.
I am not sure if we are talking about the same thing..
What I mean is that when I take older game, like - let's say - Serious Sam The First Encounter, then it will not look much better in 1080p compared to 1024x768, because it doesn't have assets - textures are in low resolution. And running it in 1440p or even 4K won't change much, it will still look crappy.
Now compare this to a game like Shadow of Mordor - this looks beautiful in FullHD. It has so good ground and wall textures that everything looks great in 1080p and I bet it will look good in 1440p, not sure if good enough for 4K though..
Textures and model data needs to deliver, otherwise it will look rather poor. Of course postprocessing and lighting effects can be of some help to make a better impression, but that is not the same as good assets.
This LG monitor looks really interesting. You mentioned it has G-Sync, but I can see it has a Freesync too. Is that possible? I thought a monitor can support either one or the other thing... ??