Your pc Build is decent, i just changed few parts here.
The ram you put was not optimal for your build, i have put it a ram than can be used to it's full potential by that motherboard with great timings for Online comptetitive gaming.
SSD doesn't effect gaming so i removed it and added a better graphics card Asus 270x with direct CU2 cooling, it's silend with great price / performance ratio. For gaming this is actually what you need, and later is easier to just upgrade and buy an SSD drive instead of selling your GPU and buying a better one.
PCPartPicker part list:
http://pcpartpicker.com/p/XxvgCJ
Price breakdown by merchant: http://pcpartpicker.com/p/XxvgCJ/by_merchant/
CPU: AMD FX-6300 3.5GHz 6-Core Processor ($99.99 @ Amazon)
CPU Cooler: Arctic Cooling Freezer 7 Pro Rev.2 45.0 CFM Fluid Dynamic Bearing CPU Cooler ($19.98 @ OutletPC)
Thermal Compound: Arctic Silver Arctic Alumina Premium Ceramic Polysynthetic 1.75g Thermal Paste ($4.66 @ NCIX US)
Motherboard: Asus M5A97 R2.0 ATX AM3+ Motherboard ($89.79 @ Amazon)
Memory: Crucial Ballistix 8GB (2 x 4GB) DDR3-1600 Memory ($89.99 @ Newegg)
Storage: Toshiba 2TB 3.5" 7200RPM Internal Hard Drive ($74.99 @ Micro Center)
Video Card: Asus Radeon R9 270X 2GB DirectCU II Video Card ($174.99 @ Micro Center)
Case: NZXT Source 210 (White) ATX Mid Tower Case ($39.99 @ Amazon)
Power Supply: Corsair CX 500W 80+ Bronze Certified Semi-Modular ATX Power Supply ($34.99 @ Newegg)
Optical Drive: LG UH12NS30 Blu-Ray Reader, DVD/CD Writer ($34.99 @ Newegg)
Keyboard: Logitech Call of Duty: MW3 Edition Wired Gaming Keyboard ($27.99 @ Newegg)
Total: $692.35
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-10-29 15:35 EDT-0400