November 14, 2013, 09:15:29 am
You are in general, correct.
The more VRAM, the larger the scenes that can be done. So, as you say, if you are just doing single houses all the extra may not be warranted, and for single properties probably 2GB is quite sufficient.
However, more VRAM also means that larger textures ie higher resolution texturing can be done, which can have a positive impact on final quality.