I have tried both windows 7 and windows 8.1 in bf4 on max I sit around 30 - 50 fps. On dota 2 I'm getting around 40. Rest of specs:
I7-4770k 4.4 GHz
Gtx 780
8gb hyperblu ddr3 1600
Gigabyte ga-z87-oc mono
Corsair 750w
I7-4770k 4.4 GHz
Gtx 780
8gb hyperblu ddr3 1600
Gigabyte ga-z87-oc mono
Corsair 750w