3900x or 5700x?

I am in a delimma.

i have to decide between the two following CPU: 3900x or 5700x

12 slower cores or 8 faster cores. My GPU is a RTX 3070 and i want to stream. I will NOT use Nvenc, so i will use my CPU. Will 8 Cores on the 5700x with streaming be enough for gaming at 1440p and stream at 1080p? Or should go with the 3900x with slower cores but more cores to handle my stream?

i need help tho, i couldn't find anything on youtube.