Starting with ultra quality at 1680x1050, we already see just how demanding Battlefield 4 can be as hitting an average of 60fps is no easy task, requiring a GTX Titan or dual GTX 660 Tis. The GTX 780 and HD 7970 GHz Edition fell short. We're admittedly a little snobbish when it comes to performance, but 30fps is honestly too laggy and 40fps is only just playable in our opinion, and this will require at least a GTX 760 or R9 270X -- steep requirements, but also to be expected considering its visuals.
As a side note, AMD's cards have a considerable advantage. The 7970 GHz Edition was 24% faster than the GTX 680, while it was just 2% slower than the GTX 780.
Lowering the quality settings to high didn't detract too much from the game's graphics, yet it managed to increase the GTX 760's performance by 52% while low-end cards such as the GTX 650 Ti managed 40fps.