Here is an awesome system with enough graphics power to max out any game at 60+ frames per second. It costs but $1807 leaving you with over $400 for your peripherals.
PCPartPicker part list:
http://pcpartpicker.com/p/rjf0
Price breakdown by merchant: http://pcpartpicker.com/p/rjf0/by_merchant/
Benchmarks: http://pcpartpicker.com/p/rjf0/benchmarks/
CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($169.99 @ Microcenter)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.71 @ Amazon)
Motherboard: Gigabyte GA-Z77X-UD3H ATX LGA1155 Motherboard ($144.99 @ Amazon)
Memory: Mushkin Blackline 8GB (2 x 4GB) DDR3-1600 Memory ($39.99 @ Newegg)
Storage: Kingston HyperX 3K 120GB 2.5" Solid State Disk ($79.99 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($69.99 @ NCIX US)
Video Card: Gigabyte Radeon HD 7970 GHz Edition 3GB Video Card (CrossFire) ($449.99 @ Newegg)
Video Card: Gigabyte Radeon HD 7970 GHz Edition 3GB Video Card (CrossFire) ($449.99 @ Newegg)
Case: Cooler Master HAF 922 ATX Mid Tower Case ($85.44 @ Amazon)
Power Supply: Kingwin Lazer Platinum 1000W 80 PLUS Platinum Certified ATX12V / EPS12V Power Supply ($172.49 @ Amazon)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($24.98 @ Newegg)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($89.98 @ Outlet PC)
Total: $1807.53
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2012-12-07 03:03 EST-0500)