Go to PC part Picker site, and build what you want to have. Here is an example...
PCPartPicker part list:
http://pcpartpicker.com/p/pHbHQ7
Price breakdown by merchant: http://pcpartpicker.com/p/pHbHQ7/by_merchant/
CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($219.95 @ SuperBiiz)
CPU Cooler: EVGA ACX CPU Cooler ($46.23 @ Amazon)
Motherboard: Asus Z97-PRO ATX LGA1150 Motherboard ($163.98 @ Newegg)
Memory: G.Skill Ripjaws Z Series 16GB (2 x 8GB) DDR3-2133 Memory ($145.98 @ Newegg)
Storage: Crucial MX100 256GB 2.5" Solid State Drive ($104.99 @ SuperBiiz)
Storage: Western Digital BLACK SERIES 2TB 3.5" 7200RPM Internal Hard Drive ($123.88 @ OutletPC)
Video Card: Asus GeForce GTX 970 4GB STRIX Video Card ($332.50 @ Directron)
Case: NZXT H440 (Black/Red) ATX Mid Tower Case ($108.99 @ SuperBiiz)
Power Supply: EVGA 750W 80+ Bronze Certified Semi-Modular ATX Power Supply ($59.99 @ Newegg)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($87.75 @ OutletPC)
Monitor: Asus VE247H 23.6" Monitor ($137.99 @ SuperBiiz)
Total: $1532.23
Prices include shipping, taxes, and discounts when available