Computer RAM and GPU best options

What is optimum RAM and RTX GPU choice for PP? Dual or single GPU - considering new line of Nvidia RTX ada generation: 4500 / 5000 / 6000. 

Moderator notes: A couple of changes were made to your post.

• The FAQ label has been removed. Please avoid labeling troubleshooting posts with "FAQ." The label is for actual FAQs in the forum.
• The Hardware or GPU label was enabled. I hope that is OK.
• I will move the post to the Hardware forum for a more targeted response.
  
  

Adobe Staff and Adobe Experts are meant to use the FAQ labels. I apologize if this issue was unclear. Thank you.