Does enabling a GPU display affect Optimus acceleration of applications on IGP displays?

Previously Viewed Answers

• How can I tell if an application is being rendered on the integrated graphics or dedicated NVIDIA GPU with an Optimus/Microsoft Hybrid graphics laptop?
• Can both IGP and GPU be active at the same time with Optimus? Can both be rendering 3D applications at the same time?
• Can Optimus support 3D Vision on IGP displays?
• What are Optimus ’IGP rendered’ and ’GPU rendered’ applications?
• Is Optimus supported with SLI?