Single family house: On a mobile GPU
A common sense between artists using Blender and Cycles to create architectural visualization is that you need high GPU options. And a few types of options like integrated boards from mobile computers wouldn't meet the minimum requirements for architectural visualization.
I do agree with that at some level because you can always put the heavy load on a render farm. Or build a computer just for render, if your budget allows that. Can you live with a GPU from a mobile computer (notebook)?
A lot of artists would be happy with a portable solution for architectural visualization. For students that must get their hardware to the classroom or professionals making updates on a project next to the client. But, would it work well with Cycles?
It does work! Of course, a solution based on a mobile GPUs would become significantly slower than a standalone board.
Here is an example of an architectural visualization project that was “cooked” on a mobile GPU. The project is a Single Family House created by an artist named Lui. By the description of the hardware, you will notice a GeForce GT 750M. The model is present in a broad range of mobile computers from MacBooks to models from Asus, Acer, Dell, and others.
All images from the project are beautiful examples of architectural visualization with Blender and Cycles. Even with a low amount of samples (1000) you get some convincing renders. With a render time of two hours, it shows how much time it may take to get renders done on a mobile GPU.
Follow the link to see all other images from this project. If you are evaluating the idea of getting a mobile GPU for architectural visualization, a project like this Single Family House may give you some clues about the viability of such hardware.