Game memory use question

C3/3D/Mobile game

I am making a 3D mobile game with C3. Obviously, I want the game to run as fast as possible and use minimum memory.

Would it use less memory to use (maybe) 5 - 3D objects of different sizes and change the face of each 3D object using 1 of 100 - 2D images?

Or would it use less memory to have 70 - 3D objects using an image as part of the object and 10 - 3D objects that use animated images as the face?

In other words, does it use less memory to put 2D faces on just a few 3D objects or to have lots of 3D objects?

This is what the game looks like for a visual of what I'm doing: youtube.com/watch

Thank you

It probably does not make a difference.

If you're not changing the total area of texture/sprite images, it shouldn't matter. They're all loaded into memory anyway.