More information would be great.
Do you already have an OS? Peripherals? The GPU you're asking for is just about half of your budget as well.
PCPartPicker part list:
http://pcpartpicker.com/p/1MYoC
Price breakdown by merchant: http://pcpartpicker.com/p/1MYoC/by_merchant/
Benchmarks: http://pcpartpicker.com/p/1MYoC/benchmarks/
CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor ($229.98 @ Outlet PC)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.98 @ Outlet PC)
Motherboard: ASRock Z87 Extreme4 ATX LGA1150 Motherboard ($134.99 @ Newegg)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1333 Memory ($65.94 @ NCIX US)
Storage: Samsung 840 Series 120GB 2.5" Solid State Disk ($89.99 @ NCIX US)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($59.97 @ SuperBiiz)
Case: Corsair 300R ATX Mid Tower Case ($59.99 @ Microcenter)
Power Supply: Corsair CX 600W 80 PLUS Bronze Certified ATX12V Power Supply ($44.99 @ Newegg)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($85.87 @ Outlet PC)
Total: $801.70
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-10-09 23:49 EDT-0400)
Gives you ~$500 to buy a GPU.