I need opinions on upgrading my current gaming rig

[eduard34]

P8Z68-V PRO/GEN3
Intel 3rd Generation Core i5-3570K CPU
Asus nVIDIA GeForce GTX 550 Ti Graphics Card

I currently have this 3 components in my computer,
i would like to upgrade my computer so that i am able to play Battlefield 4 on max settings and GTA V early next year. I currently have no idea where to start looking for possible upgrades. If possible i would like to use the same motherboard.

i'm sorry if my english confuses you, and i would really appreciate any opinion you give me. Thanks in advance!

 

[ssddx]

i would look at a gpu upgrade. your cpu and mobo are likely fine.

 

[eduard34]

i would look at a gpu upgrade. your cpu and mobo are likely fine.

Any suggestions on what should i replace it with?

 

[ssddx]

budget?