Try -
http://www.tomshardware.com/reviews/build-your-own-budget-gaming-pc,3780.html
or
CPU: AMD FX-8320 3.5GHz 8-Core Processor ($149.99 @ SuperBiiz)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($22.99 @ Micro Center)
Motherboard: Asus M5A99X EVO R2.0 ATX AM3+ Motherboard ($116.98 @ SuperBiiz)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-1600 Memory ($82.99 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($50.40 @ Amazon)
Video Card: Gigabyte GeForce GTX 760 2GB WINDFORCE Video Card ($239.99 @ Newegg)
Case: Corsair Graphite Series 230T Orange ATX Mid Tower Case ($64.99 @ Micro Center)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($57.98 @ SuperBiiz)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer ($19.98 @ OutletPC)
Total: $802.30