PCPartPicker part list / Price breakdown by merchant
CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($324.98 @ OutletPC)
CPU Cooler: be quiet! Shadow Rock 2 87.0 CFM Rifle Bearing CPU Cooler ($49.90 @ Newegg)
Motherboard: ASRock Z97 Extreme3 ATX LGA1150 Motherboard ($104.99 @ Newegg)
Memory: Corsair Vengeance LP 8GB (2 x 4GB) DDR3-1866 Memory ($79.99 @ Newegg)
Memory: Corsair Vengeance LP 8GB (2 x 4GB) DDR3-1866 Memory ($79.99 @ Newegg)
Storage: Crucial MX100 256GB 2.5" Solid State Drive ($101.99 @ Adorama)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($51.98 @ OutletPC)
Video Card: Asus GeForce GTX 970 4GB STRIX Video Card ($329.00 @ NCIX US)
Case: Fractal Design Define R5 (Black) ATX Mid Tower Case ($107.99 @ SuperBiiz)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($49.99 @ NCIX US)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($89.75 @ OutletPC)
Total: $1370.55
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-02-12 22:08 EST-0500
1370+100 to get it put together, under $1500. Saves $300 over the pre-built you linked.