Intel:
PCPartPicker part list:
https://pcpartpicker.com/list/xb4RBb
Price breakdown by merchant: https://pcpartpicker.com/list/xb4RBb/by_merchant/
CPU: Intel - Core i7-8700K 3.7GHz 6-Core Processor ($333.00 @ Amazon)
CPU Cooler: Corsair - H100i v2 70.7 CFM Liquid CPU Cooler ($104.89 @ OutletPC)
Motherboard: MSI - Z370 GAMING PRO CARBON ATX LGA1151 Motherboard ($165.23 @ Newegg)
Memory: Corsair - Vengeance RGB 16GB (2 x 8GB) DDR4-2666 Memory ($179.99 @ Amazon)
Storage: SanDisk - SSD PLUS 240GB 2.5" Solid State Drive ($69.99 @ Adorama)
Storage: Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($46.49 @ OutletPC)
Video Card: Asus - GeForce GTX 1080 Ti 11GB STRIX GAMING Video Card ($1054.98 @ Newegg)
Case: NZXT - S340 (Black) ATX Mid Tower Case ($54.99 @ Newegg)
Power Supply: SeaSonic - FOCUS Plus Gold 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($83.99 @ SuperBiiz)
Operating System: Microsoft - Windows 10 Home OEM 64-bit ($89.89 @ OutletPC)
Monitor: Dell - S2716DG 27.0" 2560x1440 144Hz Monitor ($478.00 @ Amazon)
Monitor: Asus - VG278Q 27.0" 1920x1080 144Hz Monitor ($290.90 @ OutletPC)
Total: $2952.34
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-03-08 02:11 EST-0500
Ryzen:
PCPartPicker part list:
https://pcpartpicker.com/list/NBQ8dX
Price breakdown by merchant: https://pcpartpicker.com/list/NBQ8dX/by_merchant/
CPU: AMD - Ryzen 7 1700X 3.4GHz 8-Core Processor ($296.64 @ OutletPC)
CPU Cooler: Corsair - H100i v2 70.7 CFM Liquid CPU Cooler ($104.89 @ OutletPC)
Motherboard: MSI - X370 GAMING PRO CARBON ATX AM4 Motherboard ($164.24 @ OutletPC)
Memory: G.Skill - Trident Z RGB 16GB (2 x 8GB) DDR4-3000 Memory ($219.89 @ OutletPC)
Storage: SanDisk - SSD PLUS 240GB 2.5" Solid State Drive ($69.99 @ Adorama)
Storage: Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($46.49 @ OutletPC)
Video Card: Asus - GeForce GTX 1080 Ti 11GB STRIX GAMING Video Card ($1054.98 @ Newegg)
Case: NZXT - S340 (Black) ATX Mid Tower Case ($54.99 @ Newegg)
Power Supply: SeaSonic - FOCUS Plus Gold 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($83.99 @ SuperBiiz)
Operating System: Microsoft - Windows 10 Home OEM 64-bit ($89.89 @ OutletPC)
Monitor: Dell - S2716DG 27.0" 2560x1440 144Hz Monitor ($478.00 @ Amazon)
Monitor: Asus - VG278Q 27.0" 1920x1080 144Hz Monitor ($290.90 @ OutletPC)
Total: $2954.89
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-03-08 02:13 EST-0500
All have a 1080Ti. 1440p 144Hz monitor for main and 1080p 144Hz monitor for viewing so Hz remain constant. Same size.
RGB on both builds too, seen on the GPU, RAM, Mobo
Also, there is a new GPU release this month so you might want to wait.