If the usage is gaming ... I'd have to say neither. Intel offers more bang for the buck across the board ... and what you give up is significant ... High power draw, limited memory frequency options, limited memory compatibility, Setup complicated (memory, HPET, CCX, SMT, and power profile), Overclocking barely worth it, Requires optimized apps of which there are not man and lacks integrated graphics for use by that 2nd monitor.
AMD Ryzen 3 1200 3.1 GHz (8.8 Rating) - "Gaming performance doesn't match up to competing Intel parts"
https://www.techpowerup.com/reviews/AMD/Ryzen_3_1200/21.html
AMD Ryzen 3 1300X 3.4 GHz (9.0 rating) - "Gaming performance slightly behind Intel chips"
https://www.techpowerup.com/reviews/AMD/Ryzen_3_1300X/21.html
AMD Ryzen 5 1400 3.2 GHz (7.9 Rating) - "Gaming performance in the league of cheaper Core i3 dual-core parts"
https://www.techpowerup.com/reviews/AMD/Ryzen_5_1400/21.html
AMD Ryzen 5 1500X 3.5 GHz (8.8 Rating)- Gaming frame-rates lower than competing Intel chips
https://www.techpowerup.com/reviews/AMD/Ryzen_5_1500X/20.html
AMD Ryzen 5 1600 3.2 GHz (9.3 rating) - "Gaming frame rates lower than competing Intel chips"
https://www.techpowerup.com/reviews/AMD/Ryzen_5_1600/21.html
AMD Ryzen 5 1600X 3.6 GHz (9.1 rating) - "Gaming frame rates lower than competing Intel chips"
https://www.techpowerup.com/reviews/AMD/Ryzen_5_1600X/20.html
AMD Ryzen 7 1800X 3.6 GHz (8.6 rating) - "Limited game performance"
https://www.techpowerup.com/reviews/AMD/Ryzen_7_1800X/16.html
If there will be significant us (> 25%-35%) multitreaded apps (other than video editing) and CPU budget is under $390, then Ryzen makes perfect sense.
Also.... GOU increased generation to generation have been in single digits ... low single digits. GPUs generation to generation can exceed 50%.