Considering the amount of models we don't know which one it is. They're all different
I'm fairly certain its the second from the bottom. It definitely has a terabyte of storage.
No, if you saw what had NalNalas had posted, "Fullspecs", you'll get it why his avatar is panicking
The monitor has nothing to do with performance. You haven't yet mentioned your graphics card on which games' performance depends on most.