Asus ROG CROSSHAIR X670E HERO ROG CROSSHAIR X670E Series BIOS manual English - Page 40
PCI Subsystem Settings, Above 4G Decoding, Re-Size BAR Support, SR-IOV Support
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6.4 PCI Subsystem Settings The items in this menu allow you to configure PCI, PCI-X, and PCI Express settings. Above 4G Decoding Allows you to enable or disable 64bit capable Devices to be Decoded in Above 4G Address Space (Only if System supports 64 bit PCI Decoding). Configuration options: [Disabled] [Enabled] • Only enabled under 64bit operating system. • The following item appears only when Above 4G Decoding is set to [Enabled]. Re-Size BAR Support If the system has Resizable BAR capable PCIe Devices, this option enables or disables Resizable BAR Support (Only if System supports 64 bit PCI Decoding). Configuration options: [Disabled] [Enabled] To enable Re-Size BAR Support for harnessing full GPU memory, please go to the Boot section and set CSM(Compatibility Support Module) to [Disabled]. SR-IOV Support Allows you to enable or disable Single Root IO Virtualization Support if the system has SRIOV capable PCIe devices. Configuration options: [Disabled] [Enabled] 40 ROG CROSSHAIR X670E Series BIOS Manual