You are looking at $2k if you want a good 970 sli PC. Heres something I put together quickly to give you an idea of what you are looking for. You could definitely bring down the costs or get better parts.
PCPartPicker part list:
http://pcpartpicker.com/p/9JpvhM
Price breakdown by merchant: http://pcpartpicker.com/p/9JpvhM/by_merchant/
CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($279.99 @ Micro Center)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($28.98 @ OutletPC)
Motherboard: Asus MAXIMUS VII FORMULA ATX LGA1150 Motherboard ($290.54 @ NCIX US)
Memory: G.Skill Ripjaws X Series 16GB (2 x 8GB) DDR3-1866 Memory ($135.88 @ OutletPC)
Storage: Crucial MX100 256GB 2.5" Solid State Drive ($104.99 @ Adorama)
Storage: Western Digital BLACK SERIES 1TB 3.5" 7200RPM Internal Hard Drive ($71.89 @ OutletPC)
Video Card: EVGA GeForce GTX 970 4GB ACX 2.0 Video Card (2-Way SLI) ($329.99 @ NCIX US)
Video Card: EVGA GeForce GTX 970 4GB ACX 2.0 Video Card (2-Way SLI) ($329.99 @ NCIX US)
Case: NZXT H440 (Black/Red) ATX Mid Tower Case ($115.99 @ SuperBiiz)
Power Supply: EVGA 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($104.99 @ NCIX US)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($89.75 @ OutletPC)
Monitor: Asus VG248QE 144Hz 24.0" Monitor ($264.99 @ Adorama)
Total: $2147.97
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-02-16 23:20 EST-0500