GPU select problem

HI,
My question is I need to inference 4 cameras (FPS=60) for deeplearning model at the same time.
Which is the best way to do it:

  1. RTX 2080 super *1
  2. RTX 2060 super *2

You might want to ask that there:
https://devtalk.nvidia.com/default/board/57/cuda-programming-and-performance/