Here's something basic I put together. I'm sure you could go cheaper if you want.
PCPartPicker part list:
http://pcpartpicker.com/p/2IOZr
Price breakdown by merchant:
http://pcpartpicker.com/p/2IOZr/by_merchant/
Benchmarks:
http://pcpartpicker.com/p/2IOZr/benchmarks/
CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor ($219.99 @ Newegg)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.98 @ OutletPC)
Thermal Compound: Arctic Cooling MX4 4g Thermal Paste ($6.98 @ OutletPC)
Motherboard: Biostar Hi-Fi Z87X 3D ATX LGA1150 Motherboard ($144.99 @ SuperBiiz)
Memory: G.Skill Sniper 8GB (2 x 4GB) DDR3-1600 Memory ($76.50 @ Newegg)
Storage: Kingston SSDNow V300 Series 120GB 2.5" Solid State Disk ($69.99 @ Microcenter)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($59.66 @ OutletPC)
Video Card: Gigabyte GeForce GTX 770 4GB Video Card ($389.99 @ Amazon)
Case: Corsair 200R ATX Mid Tower Case ($49.99 @ Newegg)
Power Supply: Antec High Current Gamer 620W 80+ Bronze Certified Semi-Modular ATX Power Supply ($69.99 @ Newegg)
Monitor: Asus VS247H-P 23.6" Monitor ($156.98 @ OutletPC)
Total: $1275.04
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-01-27 21:59 EST-0500)