Alright thanks to all, never figured so many people would be so helpful.
Mainly I'm looking to play Dayz, yes well aware of EA, Arma 3 and probably PUBG. I've got BF1 on console, that my boy plays as well, so happy for that to stay where it is for now.
I've checked the min req for the above 3 games but I want to run them decently and I don't think my graphics card will handle them too well.
So I'm looking for advise for the best suited one.
Also got mixed up I have I7 3820 it overclocked 4.2Ghz. Asrock Extreme4 x79 16gb Ram 770GTX 2Gb.
Thanks to all again.