Changed to 500GB storage and 8GB of memory:

PCPartPicker part list / Price breakdown by merchant / Benchmarks

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: AMD FX-6300 3.5GHz 6-Core Processor ($109.99 @ Amazon)
Motherboard: Gigabyte GA-78LMT-USB3 Micro ATX AM3+ Motherboard ($56.98 @ SuperBiiz)
Memory: Team Vulcan 8GB (2 x 4GB) DDR3-1600 Memory ($69.98 @ OutletPC)
Storage: Seagate Barracuda 500GB 3.5" 7200RPM Internal Hard Drive ($47.00 @ Amazon)
Video Card: Zotac GeForce GTX 660 2GB Video Card ($170.98 @ Newegg)
Case: Fractal Design Core 1000 USB 3.0 MicroATX Mid Tower Case ($35.99 @ Amazon)
Power Supply: Corsair Builder 430W 80+ Bronze Certified ATX Power Supply ($23.00)
Total: $513.92
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-12-30 16:41 EST-0500)

Edit: Just found a really good deal on newegg here save 10%