First of all, It´s not about how much we see CGI, it´s all matter how good it is.
Most likely nominees:
Star Trek Into Darkness
Elysium
Gravity(Most likely Gravity wins)
Pacific Rim
The Hobbit: The Desolation of Smaug(like last year)
Other possibilities:
The Great Gatsby(YES, IT´S ALL CGI)
Wolverine
Thor 2
Oblivion
Not a chance:
Iron Man 3
Man of Steel
A Good Day to Die Hard
World War Z