Why do I need to have a 2560 monitor when there are many benchmarks out there?
Because benchmark's can only show some of the story, there is so much they miss out & many times give the wrong impression.
I have been on 2560x1600 since 2006 & know first hand that there figures can be out at a given settings because they did not post all of them & merely generalised & then you reach a point in a game & the performance plummets way below what they claim because they didn't play that section or had a particular in game setting lowered which they didn't mention.


. Why? Because it will likely mean you won't have to upgrade so often to maintain a decent level of performance which in the long run may mean you actually end up spending less,or at least not that much more than someone who spends less to begin with but then needs to upgrade often.