800-1000 gaming rig

Here's my recommendation :

PCPartPicker part list: http://pcpartpicker.com/p/1Avj5
Price breakdown by merchant: http://pcpartpicker.com/p/1Avj5/by_merchant/
Benchmarks: http://pcpartpicker.com/p/1Avj5/benchmarks/

CPU: AMD FX-6300 3.5GHz 6-Core Processor ($117.98 @ Outlet PC)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($24.98 @ Outlet PC)
Motherboard: Asus M5A97 R2.0 ATX AM3+ Motherboard ($93.98 @ Outlet PC)
Memory: Patriot Viper 3 8GB (2 x 4GB) DDR3-1600 Memory ($54.99 @ Newegg)
Storage: Samsung 840 EVO 120GB 2.5" Solid State Disk ($102.99 @ NCIX US)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($59.98 @ Outlet PC)
Video Card: Gigabyte Radeon HD 7950 3GB Video Card ($203.98 @ Newegg)
Case: Corsair 300R ATX Mid Tower Case ($49.99 @ Newegg)
Power Supply: SeaSonic M12II 750W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($59.99 @ Newegg)
Optical Drive: Samsung SH-224DB/BEBE DVD/CD Writer ($14.99 @ Newegg)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($89.98 @ Outlet PC)
Monitor: Acer G226HQLBbd 60Hz 21.5" Monitor ($109.99 @ Newegg)
Keyboard: Logitech K120 Wired Standard Keyboard ($11.11 @ Amazon)
Total: $994.93
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-09-06 00:51 EDT-0400)