Is Athlon X4 750K good for gaming?

My new PC build has these parts:

-AMD Athlon X4 750K
-Cooler Master Hyper 212 EVO
-MSI A78M-E35
-Kingston Fury Black Series 4GB (1 x 4GB) DDR3-1600
-Western Digital Caviar Blue 1TB 3.5" 7200RPM
-PowerColor Radeon R7 250X 1GB
-Corsair SPEC-02 ATX Mid Tower
-EVGA 500W ATX12V / EPS12V

How far would I be able to overclock the CPU? I don't need max settings at 1080p and I don't mind medium to low on 1080p or 720p, I want to play TF2, Minecraft, Watch Dogs, Goat Simulator and Titan Fall.

Sounds Good I thing it will work if possible double the RAM

The main problem is your ram and gpu

It's a good match with your graphics card, both are entry-level.

http://www.reguluspc.com/charts/gaming-cpu-ranking-charts.html
http://www.reguluspc.com/charts/graphics-card-ranking-charts.html