What would be better choice for gaming? Also, i will be playing next gen games starting from BF4 on 720p monitor(1366x768).
Also i'm not interested in upgrading path am3+
For now the Athlon for the future if you plan on upgrading GPU during the lifetime of the computer then the FX.
My personal choice would be the FX since the HD7750/70 can play the same games with adjusting in game settings.