PCPartPicker part list:
http://pcpartpicker.com/p/1Z22s
Price breakdown by merchant: http://pcpartpicker.com/p/1Z22s/by_merchant/
Benchmarks: http://pcpartpicker.com/p/1Z22s/benchmarks/
CPU: AMD FX-6300 3.5GHz 6-Core Processor ($117.97 @ SuperBiiz)
Motherboard: Gigabyte GA-970A-D3P ATX AM3+/AM3 Motherboard ($64.99 @ Newegg)
Memory: G.Skill Ripjaws Series 4GB (2 x 2GB) DDR3-1600 Memory ($44.99 @ Newegg)
Video Card: MSI Radeon HD 7850 2GB Video Card ($129.99 @ Newegg)
Power Supply: XFX 550W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($59.99 @ Amazon)
Total: $417.93
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-11-07 22:24 EST-0500)