However, the point of the article at the end was for $1500 you get that improved speed BECAUSE of the graphics included in the Surface Book.
Actually, no, you can't. The Microsoft Surface Book that sells for $1499 is an Intel i5 8GB RAM with a 128GB SSD and Intel® Iris HD Graphics 520 (non-GPU). To get the GPU version, you have to upgrade, for $200 more, to the $1699 version. Source Microsoft Store