Hi I'm buying my first gaming computer and want to play games like gtaiv garrys mod cs:go, Farcry 3, payday 2, saints row 4, bf3. On high graphics, this includes new games coming up on decent graphics.
I'd get a GTX 760 instead of 770 if you plan on gaming at 1080p 60Hz. You'll have to turn on vsync with either of the cards since they get you over 60fps in most games. The question then becomes if you should pay $150 more even though you'll be getting the exact same 60fps.
However, if you're a 1080p 120/144Hz gamer or a 1440p gamer, then a 770 is good. I might bump it up to a 780.