This was an experiment to see if the game does indeed run on a very low spec machine.No changes or custom configs were made to the game, its just running on a clean windows 7 x64.
Full specs:
A6-5400k @ 4.2Ghz
2GB DDR3 2133 RAM (overclocked from 1333) 1.5GB usable
512mb ram reserved to APU
integrated Radeon 7540D @ 1013mhz
Crysis 3 running @ all low - motion blur@low - AF 4x - FXAA
Most frame drops are caused by the camera, not the game, and usually occur in low light situations. All in all the game is perfectly playable which is insane because its not even meeting the minimum sys requirements (2gb sys ram and 1gb vram)