I wouldn't suggest SLI on that budget. This will be more than enough for 1080p imo.
PCPartPicker part list:
http://pcpartpicker.com/p/1UTVK
Price breakdown by merchant: http://pcpartpicker.com/p/1UTVK/by_merchant/
Benchmarks: http://pcpartpicker.com/p/1UTVK/benchmarks/
CPU: AMD FX-8350 4.0GHz 8-Core Processor ($184.99 @ NCIX US)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.98 @ Outlet PC)
Motherboard: Asus M5A99X EVO R2.0 ATX AM3+ Motherboard ($114.98 @ SuperBiiz)
Memory: Corsair Vengeance LP 8GB (2 x 4GB) DDR3-1866 Memory ($64.99 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($59.99 @ NCIX US)
Video Card: Sapphire Radeon R9 280X 3GB Video Card ($299.99 @ Amazon)
Case: Corsair 300R ATX Mid Tower Case ($64.99 @ Microcenter)
Power Supply: XFX 650W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($59.99 @ NCIX US)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($16.98 @ Outlet PC)
Operating System: Microsoft Windows 8.1 - OEM (64-bit) ($96.98 @ Outlet PC)
Total: $993.86
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-10-29 20:41 EDT-0400)