GeoMip Terrain

Ok so I have GeoMip terrain working on my game but I have a question is there a performance difference between using really big textures and multple smaller terxtures stitched together. also what are the up’s and downs of each feature? I am trying to decide the best way to setup my terrain.

I also noticed something like that, and applying a mipmap filter in texture gave me better performance in this situation:
I guess is the so well known trade off “memory vs. speed”.

PT(Texture) terrain_tex_near = TexturePool::load_texture("models/terrain/tile_near.png");
terrain->get_root().set_texture(stage_near, terrain_tex_near);
/* And then set_tex_scale etc... */