Caporegime
Cheers Matt!
I am quite happy with my 290X for less than a GTX770....
EDIT: quick taster of some 1080p benches (I won't bother with 3DMark11 as it scored 8,510.. ) in Thief (max settings per bench thread).
DX11 - 34.2 FPS
Mantle - 59.6 FPS
Reasonable boost I think.....
And you're using an Athlon 760k? I'm going to be honest ive never heard of that cpu but it sounds very weak?