I've seen videos on youtube for crysis 3 with the same build as mine and they got 40 ~ 50 frames. My settings are set on ultra. The frame drops are heavily seen in the first start of the game at the raining part.
I use windows 7 64 bit
Intel Core ™ i7-3770K
ASRock Z77 Extreme4
Corsair Vengeance 16GB DDR3 1600MHz
Asus GeForce GTX 770 DirectCU II OC 2GB
Corsair Hydro H80i
Samsung SSD 840 Series 120GB
make sure the mb bios has all of it updates and you installed the newest intel chipset. make sure on your bios xmp profile is on. some mb have mvp software or people use mvp software to bond the ipgpu and the gpu together for some games.