Can NSight help m figure out the optimal size of my model's textures?

Hi,

I can see in Graphics Debugging mode that GPU generates different scales of every texture I put into it. I assume it then decides which texture to sample from, depending on the size of the model on the screen (I am not a pro in GPUs). Can I somehow see which texture is actually being used in a frame, as my models will have fixed size in my game and knowing the optimal size of textures I can save time for my artists.

Thanks