Unless you already have an X470 board which is overkill and can draw a stupid amount of power. The nonsense I have has 2 8-pin connectors even though I'm positive that the (relatively good) power delivery on the board absolutely cannot handle that much. I run it with 1, my PSU doesn't even have 2 8-pin CPU cables. Right now knowing that Zen 2 is coming, and that I'm doing encoding + other multi-core stuff, I'm feeling pretty good about getting a Ryzen 7 2700 instead of an i5-9600K which at the time was $60 more expensive. At 1440p even with a 1080 Ti I'm GPU bottlenecked, I might not even upgrade to Zen 2, I might wait for Zen 2+.