PCPartPicker part list:
http://pcpartpicker.com/p/Miat
Price breakdown by merchant: http://pcpartpicker.com/p/Miat/by_merchant/
Benchmarks: http://pcpartpicker.com/p/Miat/benchmarks/
CPU: AMD FX-4300 3.8GHz Quad-Core Processor ($119.99 @ Amazon)
Motherboard: Biostar A880GZ Micro ATX AM3+ Motherboard ($59.99 @ Newegg)
Memory: Crucial Ballistix sport 4GB (2 x 2GB) DDR3-1600 Memory ($26.85 @ NCIX US)
Storage: Seagate Barracuda 250GB 3.5" 7200RPM Internal Hard Drive ($49.19 @ Compuvest)
Video Card: Sapphire Radeon HD 7790 1GB Video Card ($149.99 @ Newegg)
Case: Gigabyte GZ-F5HEB ATX Mid Tower Case ($28.12 @ Amazon)
Power Supply: Corsair Builder 430W 80 PLUS Bronze Certified ATX12V Power Supply ($34.99 @ Newegg)
Optical Drive: Samsung SH-224BB DVD/CD Writer ($15.98 @ Outlet PC)
Total: $485.10
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-03-26 03:02 EDT-0400)