i 2nd the option for intel i3 build.
If you want a budget AMD build for gaming, then the fx6300 is the sweet spot.
PCPartPicker part list:
http://pcpartpicker.com/p/YFfRbv
Price breakdown by merchant: http://pcpartpicker.com/p/YFfRbv/by_merchant/
CPU: AMD FX-6300 3.5GHz 6-Core Processor ($97.46 @ Amazon)
Motherboard: Gigabyte GA-78LMT-USB3 Micro ATX AM3+ Motherboard ($46.98 @ Newegg)
Memory: Crucial Ballistix Sport 8GB (2 x 4GB) DDR3-1600 Memory ($59.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($52.49 @ OutletPC)
Video Card: Sapphire Radeon R7 260X 2GB Video Card ($89.99 @ Newegg)
Case: Thermaltake VL80001W2Z ATX Mid Tower Case ($21.99 @ Micro Center)
Power Supply: EVGA 430W 80+ Certified ATX Power Supply ($24.99 @ NCIX US)
Total: $382.89
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-04-19 22:42 EDT-0400
this is going to perform better than any overclocked athlon x4