This is a really nice build that will be worth the $25 extra.
PCPartPicker part list:
http://pcpartpicker.com/p/L8e1
Price breakdown by merchant: http://pcpartpicker.com/p/L8e1/by_merchant/
Benchmarks: http://pcpartpicker.com/p/L8e1/benchmarks/
CPU: AMD FX-6300 3.5GHz 6-Core Processor ($129.99 @ Amazon)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.99 @ Newegg)
Motherboard: ASRock 970 Extreme3 ATX AM3+ Motherboard ($84.99 @ Amazon)
Memory: Kingston HyperX Grey 8GB (2 x 4GB) DDR3-1600 Memory ($47.98 @ Amazon)
Storage: Western Digital Caviar Green 1.5TB 3.5" 5400RPM Internal Hard Drive ($54.99 @ Newegg)
Video Card: Sapphire Radeon HD 7870 XT 2GB Video Card ($234.99 @ Newegg)
Case: Raidmax ATX-238WU ATX Mid Tower Case ($24.99 @ Newegg)
Power Supply: XFX ProSeries 450W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($52.99 @ NCIX US)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer ($16.97 @ Outlet PC)
Total: $677.88
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-03-20 23:22 EDT-0400)