PCPartPicker part list:
http://pcpartpicker.com/p/39bNY
Price breakdown by merchant: http://pcpartpicker.com/p/39bNY/by_merchant/
Benchmarks: http://pcpartpicker.com/p/39bNY/benchmarks/
CPU: Intel Core i3-4330 3.5GHz Dual-Core Processor ($134.97 @ OutletPC)
Motherboard: MSI H81M-P33 Micro ATX LGA1150 Motherboard ($42.99 @ Newegg)
Memory: Kingston Blu 8GB (2 x 4GB) DDR3-1600 Memory ($69.99 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($57.99 @ NCIX US)
Video Card: Diamond Radeon R7 250 1GB Video Card ($89.99 @ Microcenter)
Case: NZXT Source 210 (Black) ATX Mid Tower Case ($29.99 @ Newegg)
Power Supply: Corsair Builder 500W 80+ Bronze Certified ATX Power Supply ($29.99 @ Newegg)
Optical Drive: Asus DRW-24F1ST DVD/CD Writer ($21.98 @ OutletPC)
Keyboard: Cooler Master CM Storm Devastator Gaming Bundle Wired Gaming Keyboard w/Optical Mouse ($29.99 @ Amazon)
Total: $507.88
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-03-13 12:57 EDT-0400)