BF3 recommends a GTX 460 / HD6850
Crysis 2 recommends a GTX 280 / HD4870 (optimum GTX 560Ti / HD6850)
Depends on what your budget is and what kind of power supply you have.
Check the graphics performance list
, GTX460 is #19, I wouldn't suggest anything below that... as long as you have the juice to run it.
*Edit - patonb is quick like ninja
Please read through the thread thoroughly before responding.
Nobody wants to read a wall of text, formatting is your friend.
i5 3570k | 8GB G.Skill 1600MHz | R9 290 | SeaSonic 750X