Asus Maximus IV GENE-Z - Manual (Page 188)

5-10 Chapter 5: Multiple GPU technology support
Both i-Mode and d-Mode enjoy the performance of Intel ® Sandy Bridge built-in
media features and discrete card. d-Mode is recommended for enhanced 3D
gaming performance.
i-Mode
To use LucidLogix ® Virtu™ solution in i-Mode, display must be always connected to
Sandy Bridge motherboard video output.
Be sure to set Initial Graphic Adaptor to iGPU in BIOS to activate i-Mode
suuport.
d-Mode (recommended mode)
To use LucidLogix ® Virtu™ solution in d-Mode, display must be connected to the
discrete GPU installed in the system.
Be sure to set Initial Graphic Adaptor to PCIE or PCIE/ PCI in BIOS to enable
d-Mode support.