What do you guys think about my build, I'm new to PC gaming. Could i make this better?

Obscure Symphony

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Jul 15, 2015
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My current build
CPU: AMD 8320 8 core
Motherboard: ASUS M5A99FX PRO R2.0 AM3+ AMD 990FX SATA 6Gb/s USB 3.0 ATX AMD
GPU: EVGA GeForce GTX 960 4GB FTW ACX 2.0
RAM: Corsair Vengeance 16 GB (2 x 8 GB) DDR3 1600 MHz
PSU: 600W
Storage: 120 Gb ssd and 1 TB SSHD
i have an extra 400 dollars (450 at most) that i can spend to make this build run better, The games i want to play are Battlefield 4, Final Fantasy 14 a realm reborn/Heavensward, Blade and soul (when realeased). so what do you guys think?
 

Obscure Symphony

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So is my processor ok? I was thinking on getting an i7 4790k along with a new motherboard.since im new to pc building ill ask this is getting the gtx 970 better or a new processor?
 

Obscure Symphony

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Ok sounds good thanks for the help, for future reference what would be a good processor to get for less than 500 us dollars?