PCPartPicker part list:
http://pcpartpicker.com/p/HByFYJ
Price breakdown by merchant: http://pcpartpicker.com/p/HByFYJ/by_merchant/
CPU: Intel Core i5-4460 3.2GHz Quad-Core Processor ($177.98 @ SuperBiiz)
Motherboard: ASRock H97 Anniversary ATX LGA1150 Motherboard ($74.78 @ Newegg)
Memory: G.Skill Sniper Series 8GB (2 x 4GB) DDR3-1866 Memory ($73.80 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($53.98 @ OutletPC)
Video Card: Gigabyte GeForce GTX 780 3GB WINDFORCE Video Card ($329.99 @ Newegg)
Case: Corsair 200R ATX Mid Tower Case ($39.99 @ Micro Center)
Power Supply: Antec High Current Gamer 620W 80+ Bronze Certified Semi-Modular ATX Power Supply ($68.78 @ Newegg)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($102.98 @ Newegg)
Monitor: Acer G226HQLBbd 60Hz 21.5" Monitor ($99.99 @ Newegg)
Keyboard: Cooler Master CM Storm Devastator Gaming Bundle Wired Gaming Keyboard w/Optical Mouse ($28.06 @ NCIX US)
Total: $1028.33
Prices include shipping, taxes, and discounts when available
Slightly altered build from MasterDell's, I added slightly faster ram and a graphics card with a better cooler. The case is a personal touch so go with whatever you find aesthetically pleasing.