Multiple Graphic Adapters
Most laptops have more than one graphic card installed to save the battery. Most common are Intel HD Onboard graphics. Realizzer supports them, too but with lesser performance. During first startup, Realizzer will check how many adapters are installed and will ask which one it should take.
Always use NVIDIA or ATI if available. If you have an NVIDIA card installed you can also use the NVIDIA System configuration to define the default graphics adapter.