ASROCK Z790 Series - 3.4.2 Chipset Configuration Options

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Intel Z790/H770/B760 Series
3.4.2 Chipset Conguration
Primary Graphics Adapter
Allows you to select a primary VGA.
Conguration options: [Auto] [Onboard] [PCIE1] (Options vary when you’ve installed a
graphics card on your motherboard.)
Above 4G Decoding
Allows you to enable or disable above 4G MemoryMappedIO decoding. is is disabled
automatically when Aperture Size is set to 2048MB.
Conguration options: [Enabled] [Disabled]
C.A.M (Clever Access Memory)
If system has Resizable BAR capable PCIe Devices, use this option to enable or disable
Resizable BAR support (only of the system supports 64-bit PCI decoding).
Conguration options: [Enabled] [Disabled]
VT-d
Intel® Virtualization Technology for Directed I/O helps your virtual machine monitor
better utilize hardware by improving application compatibility and reliability, and
providing additional levels of manageability, security, isolation, and I/O performance.
Conguration options: [Enabled] [Disabled]