Originally Posted by artem
The most important Optimus feature is that you can physically on-the-fly enable and disable NVIDIA GPU when the GPU is really required.
Switching GPUs via reboot/BIOS settings is not that interesting.
I disagree. The most important feature is to let users use the nvidia gpu in the first place. Switching between them is less important (and of course depends on the first one)
Currently, neither works on some systems.