Do you check the total consumption of the computer from the wall? I think my mining farm of 5 Rx 5600 consumes less electricity.
You are doing very well, because you have one video card. When you build a mining farm of 5 such video cards, you will understand what mining on hot video cards is.
Of course, you are right when adding 5 or more video cards, the picture of consumption as well as the temperature regime will change dramatically, the multiplicative effect will certainly have its effect, but I was just interested in checking my card in different algorithms.