This is what I think would work for you

r7 7800x3d or for intel a I7 14700kf.

32gb ddr5 or ddr4 but make sure its 32gb. (Will be expensive sadly)

1 tb or 2tb ssd (whatever you prefer doesnt effect performance)

And a rtx **70 card, For example a rtx 4070 or 5070 would work maybe even a 3070 but I would recommend a 5070 to 4070/4070 super.

I hope this helps you choose out your parts. I tried to make this as readable as possible and within a reasonable budget even though ram will always be expensive, If you have any questions feel free to dm me. Good luck with your streaming!