I thought that may as well do it because he might overclock and a XFX550 wasn't much more money but if he wants to change some stuff here is a slightly altered build:
PCPartPicker part list:
http://pcpartpicker.com/p/cPWtNG
Price breakdown by merchant: http://pcpartpicker.com/p/cPWtNG/by_merchant/
CPU: AMD FX-6300 3.5GHz 6-Core Processor ($109.99 @ Newegg)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($28.99 @ Micro Center)
Motherboard: Gigabyte GA-970A-D3P ATX AM3+/AM3 Motherboard ($69.99 @ Newegg)
Memory: G.Skill Sniper 8GB (2 x 4GB) DDR3-1600 Memory ($79.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($54.99 @ Amazon)
Video Card: Sapphire Radeon R9 280 3GB Dual-X Video Card ($203.98 @ Newegg)
Case: Thermaltake Commander G42 ATX Mid Tower Case ($44.99 @ Micro Center)
Power Supply: XFX 650W 80+ Bronze Certified Semi-Modular ATX Power Supply ($74.99 @ NCIX US)
Case Fan: Cooler Master SickleFlow 69.7 CFM 120mm Fan ($3.99 @ Newegg)
Total: $651.90
Prices include shipping, taxes, and discounts when available