[SOLVED] Helping my Friend Build a PC, Want to make sure the build will be a good one.

Solution
Modern Triple A gaming. No editing or streaming, just hardcore gaming at high - ultra settings 1080p@ 144fps Pref. Yes only monitor and tower.
The budget could do 1440P/144hz.

PCPartPicker Part List
CPU: AMD Ryzen 7 3700X 3.6 GHz 8-Core Processor ($324.99 @ Amazon)
CPU Cooler: Noctua NH-U12S chromax.black 55 CFM CPU Cooler ($69.95 @ Amazon)
Motherboard: ASRock B450M/AC Micro ATX AM4 Motherboard ($84.99 @ Amazon)
Memory: G.Skill Ripjaws V 32 GB (2 x 16 GB) DDR4-3600 Memory ($134.99 @ Newegg)
Storage: Intel 660p Series 1.02 TB M.2-2280 NVME Solid State Drive ($119.99 @ B&H)
Video Card: NVIDIA GeForce RTX 2080 SUPER 8 GB Video Card...
Modern Triple A gaming. No editing or streaming, just hardcore gaming at high - ultra settings 1080p@ 144fps Pref. Yes only monitor and tower.
The budget could do 1440P/144hz.

PCPartPicker Part List
CPU: AMD Ryzen 7 3700X 3.6 GHz 8-Core Processor ($324.99 @ Amazon)
CPU Cooler: Noctua NH-U12S chromax.black 55 CFM CPU Cooler ($69.95 @ Amazon)
Motherboard: ASRock B450M/AC Micro ATX AM4 Motherboard ($84.99 @ Amazon)
Memory: G.Skill Ripjaws V 32 GB (2 x 16 GB) DDR4-3600 Memory ($134.99 @ Newegg)
Storage: Intel 660p Series 1.02 TB M.2-2280 NVME Solid State Drive ($119.99 @ B&H)
Video Card: NVIDIA GeForce RTX 2080 SUPER 8 GB Video Card ($669.99 @ Best Buy)
Case: Fractal Design Meshify C Mini MicroATX Mini Tower Case ($87.99 @ Amazon)
Power Supply: SeaSonic FOCUS Plus Gold 650 W 80+ Gold Certified Fully Modular ATX Power Supply ($104.99 @ B&H)
Monitor: MSI Optix MAG27CQ 27.0" 2560x1440 144 Hz Monitor ($344.98 @ Newegg)
Total: $1942.86
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2020-02-01 13:43 EST-0500
 
Solution
Here's my build for 1080p gaming Intel is still king:
PCPartPicker Part List

CPU: Intel Core i9-9900K 3.6 GHz 8-Core Processor ($523.89 @ B&H)
CPU Cooler: Alphacool Eisbaer 360 63.85 CFM Liquid CPU Cooler ($179.95 @ Amazon)
Motherboard: Asus ROG MAXIMUS XI HERO (WI-FI) ATX LGA1151 Motherboard ($286.99 @ Amazon)
Memory: G.Skill Ripjaws V 16 GB (2 x 8 GB) DDR4-3600 Memory ($82.99 @ Newegg)
Storage: Intel 660p Series 2.048 TB M.2-2280 NVME Solid State Drive ($229.95 @ B&H)
Video Card: MSI GeForce RTX 2070 SUPER 8 GB VENTUS OC Video Card ($489.99 @ B&H)
Case: Fractal Design Meshify C ATX Mid Tower Case ($99.98 @ Newegg)
Power Supply: Corsair RM (2019) 750 W 80+ Gold Certified Fully Modular ATX Power Supply ($109.99 @ Amazon)
Total: $2003.73
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2020-02-01 17:01 EST-0500
 
PCPartPicker Part List

CPU: AMD Ryzen 7 3700X 3.6 GHz 8-Core Processor ($324.99 @ Amazon)
Motherboard: ASRock X570 Phantom Gaming 4 ATX AM4 Motherboard ($158.98 @ Newegg)
Memory: Patriot Viper Steel 16 GB (2 x 8 GB) DDR4-3733 Memory ($97.99 @ Amazon)
Storage: Western Digital Blue 2 TB M.2-2280 Solid State Drive ($214.99 @ Newegg)
Storage: Seagate Barracuda Compute 4 TB 3.5" 5400RPM Internal Hard Drive ($79.98 @ Amazon)
Video Card: NVIDIA GeForce RTX 2080 SUPER 8 GB Video Card ($669.99 @ Best Buy)
Case: Rosewill CHALLENGER S ATX Mid Tower Case ($54.99 @ Amazon)
Power Supply: Antec NeoECO Gold 550 W 80+ Gold Certified Semi-modular ATX Power Supply ($82.98 @ Newegg)
Monitor: Dell S2719DGF 27.0" 2560x1440 155 Hz Monitor ($299.89 @ Amazon)
Total: $1984.78
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2020-02-01 17:03 EST-0500


a 570 board is better with a 3000-series CPU, with 3733 cas 17 ram (the sweet spot for this model), a 155Hz monitor and 6 TB of storage, including 2 tb in NVME SSD, for a better overall build
 
I wouldn't say "King" anymore. Intel use to have a much larger lead regarding gaming FPS . But a few frames here or there?

When going to the enthusiast level why would you not go with the AMD x570 platform? This is my first AMD pc in over a decade and it's been rock solid and super smooth gaming at 1440p. Get a nice IPS 27" panel. Best gaming experience I've ever had, coming from a 52 year old.

View: https://www.youtube.com/watch?v=CGQY9yJqfMs
 
Here's my build for 1080p gaming Intel is still king:
PCPartPicker Part List

CPU: Intel Core i9-9900K 3.6 GHz 8-Core Processor ($523.89 @ B&H)
CPU Cooler: Alphacool Eisbaer 360 63.85 CFM Liquid CPU Cooler ($179.95 @ Amazon)
Motherboard: Asus ROG MAXIMUS XI HERO (WI-FI) ATX LGA1151 Motherboard ($286.99 @ Amazon)
Memory: G.Skill Ripjaws V 16 GB (2 x 8 GB) DDR4-3600 Memory ($82.99 @ Newegg)
Storage: Intel 660p Series 2.048 TB M.2-2280 NVME Solid State Drive ($229.95 @ B&H)
Video Card: MSI GeForce RTX 2070 SUPER 8 GB VENTUS OC Video Card ($489.99 @ B&H)
Case: Fractal Design Meshify C ATX Mid Tower Case ($99.98 @ Newegg)
Power Supply: Corsair RM (2019) 750 W 80+ Gold Certified Fully Modular ATX Power Supply ($109.99 @ Amazon)
Total: $2003.73
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2020-02-01 17:01 EST-0500
Budget needs to include 144hz monitor.
 
Budget needs to include 144hz monitor.
Ok not enough for 9900k. Here is my AMD build with a nice IPS gaming monitor with freesync:
PCPartPicker Part List

CPU: AMD Ryzen 7 3700X 3.6 GHz 8-Core Processor ($324.99 @ Amazon)
Motherboard: MSI B450 TOMAHAWK MAX ATX AM4 Motherboard ($114.99 @ B&H)
Memory: G.Skill Ripjaws V 16 GB (2 x 8 GB) DDR4-3600 Memory ($82.99 @ Newegg)
Storage: Intel 660p Series 2.048 TB M.2-2280 NVME Solid State Drive ($229.95 @ B&H)
Video Card: Gigabyte Radeon RX 5700 XT 8 GB GAMING OC Video Card ($406.98 @ Newegg)
Case: Fractal Design Meshify C ATX Mid Tower Case ($99.98 @ Newegg)
Power Supply: Corsair RM (2019) 750 W 80+ Gold Certified Fully Modular ATX Power Supply ($109.99 @ Amazon)
Monitor: Asus MG279Q 27.0" 2560x1440 144 Hz Monitor ($615.30 @ Amazon)
Total: $1985.17
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2020-02-01 22:54 EST-0500