PCPartPicker part list:
http://pcpartpicker.com/p/3Q0k3
Price breakdown by merchant: http://pcpartpicker.com/p/3Q0k3/by_merchant/
Benchmarks: http://pcpartpicker.com/p/3Q0k3/benchmarks/
CPU: AMD FX-8350 4.0GHz 8-Core Processor ($179.99 @ NCIX US)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.94 @ OutletPC)
Thermal Compound: Arctic Silver 5 High-Density Polysynthetic Silver 3.5g Thermal Paste ($6.98 @ OutletPC)
Motherboard: Asus M5A99X EVO R2.0 ATX AM3+ Motherboard ($106.99 @ NCIX US)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-1600 Memory ($69.99 @ Newegg)
Storage: Samsung 840 EVO 120GB 2.5" Solid State Disk ($79.99 @ Micro Center)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($54.43 @ OutletPC)
Video Card: MSI Radeon R9 280 3GB TWIN FROZR Video Card ($200.00 @ Newegg)
Case: Corsair 230T Windowed-BLUE ATX Mid Tower Case ($73.99 @ Amazon)
Power Supply: XFX 650W 80+ Bronze Certified ATX Power Supply ($64.99 @ NCIX US)
Operating System: Microsoft Windows 8.1 (32/64-bit) ($104.29 @ NCIX US)
Case Fan: Corsair CO-9050014-WW 62.7 CFM 120mm Fan ($25.38 @ NCIX US)
Total: $996.96
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-05-24 11:16 EDT-0400)
made a few adjustment on your RAM, storage, GPU and PSU. It should perform a lot better than your original build