Heres another build for 4k dollars
PCPartPicker Part List
CPU: AMD Ryzen 9 3950X 3.5 GHz 16-Core Processor ($737.99 @ Newegg)
CPU Cooler: NZXT KRAKEN Z73 73.11 CFM Liquid CPU Cooler ($279.99 @ B&H)
Motherboard: ASRock X570 Extreme4 ATX AM4 Motherboard ($209.99 @ Newegg)
Memory: G.Skill Trident Z Neo 32 GB (4 x 8 GB) DDR4-3600 Memory ($240.99 @ Newegg)
Storage: Corsair MP600 Force Series Gen4 2 TB M.2-2280 NVME Solid State Drive ($414.99 @ Newegg)
Video Card: Asus GeForce RTX 2080 Ti 11 GB ROG Strix Gaming OC Video Card ($1279.99 @ Best Buy)
Case: Lian Li PC-O11 Dynamic ATX Full Tower Case ($129.99 @ Adorama)
Power Supply: Corsair RMx (2018) 850 W 80+ Gold Certified Fully Modular ATX Power Supply ($144.99 @ Best Buy)
Case Fan: Corsair LL120RGB LED (Three Fans With Lighting Node PRO) 43.25 CFM 120 mm Fans ($106.99 @ Newegg)
Case Fan: Corsair LL120RGB LED (Three Fans With Lighting Node PRO) 43.25 CFM 120 mm Fans ($106.99 @ Newegg)
Case Fan: Corsair LL120RGB LED (Three Fans With Lighting Node PRO) 43.25 CFM 120 mm Fans ($106.99 @ Newegg)
Custom: Corsair comander pro ($75.00)
Custom: Corsair comander pro ($75.00)
Total: $3909.89
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2020-04-01 01:23 EDT-0400
and you'll still have enough for custom cables