There is no exact GPU for the PS4. It runs BF4 at 30-45fps at 900p at high-settings equivalent.
I'm not going to continue arguing about FPS. My R9 270X, with a little OC, runs BF4 1080p Ultra Settings at 60-70FPS. At worst it drops to low 50s. At high it stays around high 80s. I tested it with FRAPS a dozen times.