PCPartPicker part list:
http://pcpartpicker.com/p/385He
Price breakdown by merchant: http://pcpartpicker.com/p/385He/by_merchant/
Benchmarks: http://pcpartpicker.com/p/385He/benchmarks/
CPU: AMD FX-6300 3.5GHz 6-Core Processor ($109.99 @ Newegg)
Motherboard: Biostar TA970 ATX AM3+ Motherboard ($69.99 @ Newegg)
Memory: Kingston Black 8GB (2 x 4GB) DDR3-1600 Memory ($64.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($57.99 @ NCIX US)
Video Card: Asus GeForce GTX 760 2GB Video Card ($249.99 @ NCIX US)
Case: NZXT Source 210 (Black) ATX Mid Tower Case ($29.99 @ Newegg)
Power Supply: EVGA 600B 600W 80+ Bronze Certified ATX Power Supply ($44.99 @ NCIX US)
Optical Drive: LG GH24NSB0 DVD/CD Writer ($15.99 @ Microcenter)
Operating System: Microsoft Windows 8.1 - 64-bit (OEM) (64-bit) ($97.26 @ OutletPC)
Total: $729.18
Here's a full build within your budget.