For us Europeans, we have to consider efficiency a lot.
My server with a b450 + 2700X + Arc A380 + 2 HDDs idles at 60W with no power tuning.
With a 0.30€ per kwh assuming always idle, that is 160€ per year.
You might be better buying an Intel NUC.
You van get a nuc13 with an i5-1240p that has decent transcoding power and idles at 8W. That is a ton of power savings per year vs consumer desktop hardware. I would do that if I had to make my server over again. Essentially the same cost with much lower power costs.