Changed a few things, here's what I recommend :
PCPartPicker part list:
http://pcpartpicker.com/p/2Pd1c
Price breakdown by merchant: http://pcpartpicker.com/p/2Pd1c/by_merchant/
Benchmarks: http://pcpartpicker.com/p/2Pd1c/benchmarks/
CPU: AMD Athlon II X4 750K 3.4GHz Quad-Core Processor ($79.98 @ OutletPC)
Motherboard: Gigabyte GA-F2A55M-HD2 Micro ATX FM2 Motherboard ($44.99 @ Newegg)
Memory: Crucial Ballistix Sport 4GB (2 x 2GB) DDR3-1600 Memory ($45.95 @ Amazon)
Storage: Western Digital Caviar Blue 250GB 3.5" 7200RPM Internal Hard Drive ($33.44 @ Amazon)
Video Card: XFX Radeon R7 260X 1GB Video Card ($119.99 @ NCIX US)
Case: Sentey CS1-1398 PLUS ATX Mid Tower Case ($14.99 @ Newegg)
Power Supply: Corsair Builder 430W 80+ Bronze Certified ATX Power Supply ($19.99 @ Microcenter)
Total: $359.33
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-02-07 21:12 EST-0500)