You can also use most of the money on the video card and get much better gaming performance, including battlefield 4 on ultra 1080p with 50+ fps:
PCPartPicker part list:
http://pcpartpicker.com/p/3mWTr
Price breakdown by merchant: http://pcpartpicker.com/p/3mWTr/by_merchant/
Benchmarks: http://pcpartpicker.com/p/3mWTr/benchmarks/
CPU: AMD Athlon X4 750K 3.4GHz Quad-Core Processor ($79.98 @ OutletPC)
Motherboard: MSI A88XM-E35 Micro ATX FM2+ Motherboard ($67.99 @ Amazon)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory ($79.99 @ Amazon)
Storage: Western Digital Caviar Black 1TB 3.5" 7200RPM Internal Hard Drive ($88.98 @ SuperBiiz)
Video Card: Gigabyte Radeon R9 270X 2GB Video Card ($229.99 @ NCIX US)
Case: Corsair 200R ATX Mid Tower Case ($57.99 @ Micro Center)
Power Supply: Corsair Builder 500W 80+ Bronze Certified ATX Power Supply ($49.99 @ Newegg)
Total: $654.91
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-04-06 10:03 EDT-0400)