CPU: AMD FX-6300 3.5GHz 6-Core Processor ($119.99 @ Newegg)
Motherboard: Asus M5A99FX PRO R2.0 ATX AM3+ Motherboard ($134.99 @ Amazon)
Memory: Crucial Ballistix Tactical 8GB (1 x 8GB) DDR3-1600 Memory ($65.27 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($66.61 @ Outlet PC)
Video Card: Gigabyte GeForce GTX 760 2GB Video Card ($265.91 @ Newegg)
Case: NZXT Source 210 Elite (White) ATX Mid Tower Case ($41.73 @ Amazon)
Power Supply: Corsair Builder 500W 80 PLUS Bronze Certified ATX12V Power Supply ($29.99 @ Newegg)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer ($14.99 @ Newegg)
Operating System: Microsoft Windows 8 (OEM) (64-bit) ($87.98 @ Outlet PC)
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-07-03 12:12 EDT-0400)
Every part in their is perfect, if you go for a lower CPU it would bottleneck the GPU. Also the FX 6300 is what one recommends as the least for an AMD build now.
RAM, PSU etc. all are in the exact range required.
If you do need to bring the price down i would go with a more budget motherboard. The 990FX series is meant for PC Enthusiast's, the 990X series performs equally well but only has two x8 PCI-E config for crossfire/SLI.