This is a great build for $1000.
PCPartPicker part list:
http://pcpartpicker.com/p/1su2n
Price breakdown by merchant: http://pcpartpicker.com/p/1su2n/by_merchant/
Benchmarks: http://pcpartpicker.com/p/1su2n/benchmarks/
CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($189.99 @ Microcenter)
CPU Cooler: Noctua NH-D14 65.0 CFM CPU Cooler ($74.99 @ Newegg)
Motherboard: ASRock Z77 Extreme4 ATX LGA1155 Motherboard ($134.98 @ Outlet PC)
Memory: GeIL EVO Veloce Series 8GB (2 x 4GB) DDR3-1600 Memory ($53.99 @ Newegg)
Video Card: Sapphire Radeon HD 7970 GHz Edition 3GB Video Card ($349.99 @ Newegg)
Case: Antec Nine Hundred ATX Mid Tower Case ($99.99 @ Amazon)
Power Supply: OCZ Fatal1ty 550W 80 PLUS Certified ATX12V / EPS12V Power Supply ($29.50 @ Newegg)
Optical Drive: LG GH24NS95 DVD/CD Writer ($15.98 @ Outlet PC)
Total: $949.41
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-08-15 23:24 EDT-0400)