PCPartPicker part list:
http://pcpartpicker.com/p/35Ovk
Price breakdown by merchant: http://pcpartpicker.com/p/35Ovk/by_merchant/
Benchmarks: http://pcpartpicker.com/p/35Ovk/benchmarks/
CPU: AMD FX-8320 3.5GHz 8-Core Processor ($154.98 @ SuperBiiz)
CPU Cooler: Xigmatek GAIA SD1283 56.3 CFM CPU Cooler ($36.99 @ Newegg)
Motherboard: Asus M5A99X EVO R2.0 ATX AM3+ Motherboard ($114.98 @ SuperBiiz)
Memory: GeIL EVO POTENZA 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 770 2GB Video Card ($328.98 @ SuperBiiz)
Case: Inwin GT1 Black ATX Mid Tower Case ($49.99 @ Microcenter)
Power Supply: EVGA 600B 600W 80+ Bronze Certified ATX Power Supply ($44.99 @ NCIX US)
Total: $849.90
This will max almost every game at 1080p with everything enabled. Gave you a good cpu cooler so you can OC your cpu right away if you want.