Budget Build for a Friend. $1000

G

Guest

Guest
$1,000 USD is his limit.
Including monitor.
PC gaming.

Thank-you.
 
1000 is not that budget :)
I will get this:

PCPartPicker part list / Price breakdown by merchant

CPU: AMD - Ryzen 5 1400 3.2GHz Quad-Core Processor ($146.89 @ OutletPC)
Motherboard: Gigabyte - GA-AB350-GAMING 3 ATX AM4 Motherboard ($84.99 @ Amazon)
Memory: G.Skill - Ripjaws V Series 8GB (2 x 4GB) DDR4-3733 Memory ($101.99 @ Newegg)
Storage: Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($46.89 @ OutletPC)
Video Card: Asus - Radeon RX 580 8GB DUAL Video Card ($279.99 @ Newegg)
Case: Cooler Master - HAF 912 ATX Mid Tower Case ($59.99 @ B&H)
Power Supply: Corsair - TXM Gold 550W 80+ Gold Certified Semi-Modular ATX Power Supply ($72.98 @ Newegg)
Operating System: Microsoft - Windows 10 Home OEM 64-bit ($92.99 @ B&H)
Monitor: AOC - G2460VQ6 24.0" 1920x1080 75Hz Monitor ($99.99 @ Best Buy)
Total: $986.70
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-12-13 15:06 EST-0500
 
Solution
Slightly tweaked the above build :

PCPartPicker part list / Price breakdown by merchant

CPU: AMD - Ryzen 5 1500X 3.5GHz Quad-Core Processor ($168.39 @ SuperBiiz)
Motherboard: Gigabyte - GA-AB350-GAMING 3 ATX AM4 Motherboard ($70.98 @ Newegg)
Memory: G.Skill - Ripjaws V Series 8GB (2 x 4GB) DDR4-3733 Memory ($101.99 @ Newegg)
Storage: Toshiba - P300 1TB 3.5" 7200RPM Internal Hard Drive ($39.88 @ Other World Computing)
Video Card: Asus - Radeon RX 580 4GB Dual Video Card ($254.89 @ OutletPC)
Case: Fractal Design - Focus G (Black) ATX Mid Tower Case ($39.99 @ SuperBiiz)
Power Supply: Thermaltake - Toughpower GOLD 750W 80+ Gold Certified Semi-Modular ATX Power Supply ($49.99 @ Newegg)
Operating System: Microsoft - Windows 10 Home OEM 64-bit ($89.89 @ OutletPC)
Monitor: AOC - G2460VQ6 24.0" 1920x1080 75Hz Monitor ($99.99 @ Best Buy)
Total: $915.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-12-14 04:19 EST-0500
An ssd if you can squeeze in
https://pcpartpicker.com/product/3kL7YJ/samsung-internal-hard-drive-mz75e250bam