I was trying to answer the question. but I think it's better to comment your answer.
The answer is yes and no.
The executable binary size is pretty small. and basically, Godot does not require high end hardware.
but, AFAIK, Godot 3.0 requires OpenGL 3.3 for PC and OpenGL ES 3.0 for mobile.
And for now, Godot 2.1.x needs lower graphics requirement.
Godot 3.1 or later, it will support OpenGL 2.1 and ES 2.0 again for lower devices.