You are setting the bar pretty low looking for ultra settings at 768p. This system is under 1k and will handle all the new games at 1080p.
PCPartPicker part list:
https://pcpartpicker.com/list/kbfr6s
Price breakdown by merchant: https://pcpartpicker.com/list/kbfr6s/by_merchant/
CPU: Intel - Core i5-8400 2.8GHz 6-Core Processor ($178.90 @ OutletPC)
Motherboard: Gigabyte - Z370P D3 ATX LGA1151 Motherboard ($89.89 @ OutletPC)
Memory: G.Skill - Trident Z 16GB (2 x 8GB) DDR4-3200 Memory ($172.99 @ Newegg)
Storage: Samsung - 850 EVO-Series 250GB 2.5" Solid State Drive ($99.89 @ OutletPC)
Storage: Seagate - BarraCuda 1TB 3.5" 7200RPM Internal Hard Drive ($44.18 @ OutletPC)
Video Card: Gigabyte - GeForce GTX 1060 6GB 6GB WINDFORCE OC 6G Video Card ($354.98 @ Newegg)
Power Supply: SeaSonic - FOCUS Gold 550W 80+ Gold Certified Semi-Modular ATX Power Supply ($44.99 @ Newegg)
Total: $985.82
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-03-25 13:18 EDT-0400