ASUS UEFI BIOS

 

Advanced menu

 The Advanced menu items allow you to change the settings for the CPU and other system devices.

Remarks

Be cautious when changing the settings of the Advanced menu items. Incorrect field values can cause the system to malfunction.

Platform Misc Configuration

 The items in this menu allow you to configure the platform-related features.

PCI Express Native Power Management [Disabled]

 This item allows you to enhance the power saving feature of PCI Express and perform ASPM operations in the operating system. Configuration options: [Disabled] [Enabled]

Remarks

The following item appears only when you set the PCI Express Native Power Management to [Enabled].

Native ASPM [Disabled]

[Enabled] Windows® Vista OS controls the ASPM (active state power management) support for devices. [Disabled] BIOS controls the ASPM support for the device.

PCH - PCI Express options

 

PCH DMI ASPM [Disabled]

This item allows you to enable/disable the PCH DMI ASPM settings. Configuration options: [Disabled] [Enabled]

ASPM [Disabled]

 This item allows you to select the ASPM state for energy-saving conditions. Configuration options: [Disabled] [L0s] [L1] [L0sL1] [Auto]

SA - PCI Express options

 

DMI Link ASPM Control [Disabled]

 This item allows you to control the Active State Power Management on both CPU and PCH (platform controller hub) Both DMI link ASPM control items of the CPU and PCH sides must be enabled for the ASPM to take effect. Configuration options: [Disabled] [L1]

PEG ASPM [Disabled]

 This item allows you to select the ASPM state for energy-saving conditions, or use the ASUS optimized energy saving profile. Configuration options: [Disabled] [Auto] [ASPM L0s] [ASPM L1] [ASPM L0sL1]

CPU Configuration

 The items in this menu show the CPU-related information that the BIOS automatically detects.

Remarks

The items shown in submenu may be different due to the CPU you installed.

Hyper-threading [Enabled]

 The Intel Hyper-Threading Technology allows a hyper-threading processor to appear as two logical processors to the operating system, allowing the operating system to schedule two threads or processes simultaneously. [Enabled] Two threads per activated core are enabled. [Disabled] Only one thread per activated core is enabled.

Active Processor Cores [All]

 This item allows you to select the number of CPU cores to activate in each processor package. Configuration options: [All] [1] [2] [3]

Remarks

For some CPU types, only [All] and [1] appear.

Intel Virtualization Technology [Disabled]

 When set to [Enabled], a VMM can utilize the additional hardware capabilities provided by  Vanderpool Technology. Configuration options: [Disabled] [Enabled] ]

Hardware Prefetcher [Enabled]

 This item allows the CPU to prefetch commands and data in the L2 cache, reduces the DRAM loading time and improves the system performance. Configuration options: [Disabled] [Enabled]

Adjacent Cache Line Prefetch [Enabled]

 This item allows the mid level cache (L2) to prefetch adjacent cache lines, reducing the DRAM loading time and improves the system performance. Configuration options: [Disabled] [Enabled]

SW Guard Extensions [Disabled]

 This item enables/disables the Software Guard Extensions (SGX). Configuration options: [Disabled] [Software Controlled]

Tcc Offset Time Window [Auto]

 This item allows you to specify the time window for the Running Average Temperature Limit (RATL) feature. Configuration options: [Auto] [Disabled] [5 ms] [10 ms] [55 ms] [156 ms] [375 ms] [500 ms] [750 ms] [1 sec]

CPU Power Management Control

 This item allows you to manage and configure the CPU’s power.

Intel(R) SpeedStep(tm) [Auto]

 This item allows your system to support more than two frequency ranges. . Configuration options: [Auto] [Disabled] [Enabled] ]

CPU C-States [Auto]

 This item allows you to set the power saving of the CPU states. .Configuration options: [Auto] [Disabled] [Enabled] ]

Remarks

The following items appear only when you set the CPU C-States to [Enabled].

Enhanced C-States [Enabled]

 This item allows your CPU to reduce power consumption when the system is in idle mode. Configuration options: [Enabled] [Disabled]

CPU C3 Report [Enabled]

 This item allows you to disable or enable the CPU C3 report to the operating system. Configuration options: [Enabled] [Disabled]

CPU C6 Report [Enabled]

 This item allows you to disable or enable the CPU C6 report to the operating system. Configuration options: [Enabled] [Disabled]

CPU C7 Report [Enabled]

 This item allows you to disable or enable the CPU C7 report to the operating system. Configuration options: [Disabled] [CPU C7] [CPU C7s]

CPU C8 Report [Enabled]

 This item allows you to disable or enable the CPU C8 report to the operating system. Configuration options: [Enabled] [Disabled]

Package C State limit [Auto]

 This item allows you to set the a C-state support for the CPU package. Configuration options: [C0/C1] [C2] [C3] [C6] [C7] [C7s] [C8] [Auto] [Enabled]

CFG lock [Disabled]

 This item allows you to enable or disable the CFG lock. Configuration options: [Disabled] [Enabled]

System Agent (SA) Configuration

 

VT-d [Enabled]

 Allows you to enable or disable VT-d function on MCH. Configuration options: [Enabled] [Disabled]

Above 4G Decoding [Disabled]

 Allows you to enable or disable the 4G decoding for 64-bit devices when the system supports the 64-bit PCI decoding. Configuration options: [Enabled] [Disabled] 

Graphics Configuration

 Allows you to select a primary display from CPU, PCIE and PCI graphical devices.

Primary Display [Auto]

 Allows you to select the primary display from CPU, PCIE and PCI graphics devices. Configuration options: [Auto] [CPU Graphics] [PCIE] [PCI]

iGPU Multi-Monitor [Disabled]

 This item allows you to empower both integrated and discrete graphics devices for the multi-monitor output. The CPU graphics shared system memory size is fixed at 64 MB. Configuration options: [Disabled] [Enabled]

RC6(Render Standby) [Enabled]

 Allows you to enable or disable render standby support. Configuration options: [Disabled] [Enabled]

DVMT Pre-Allocated [64M]

 Allows you to select the DVMT 5.0 pre-allocated (fixed) graphics memory size used by the internal graphics device. Configuration options: [32M] [64M] [96M] [128M] [160M] [192M] [224M] [256M] [288M] [320M] [352][384][416][448][480][512][1024]

DMI/OPI Configuration

 This item allows you to control various DMI (direct media interface) to run at PCI-E 3.0 speed.

DMI Max Link Speed [Auto]

 Allows you to configure the DMI speed. Configuration options: [Auto] [Gen1] [Gen2] [Gen3]

PEG Port Configuration

 Allows you to configure the PEG Port settings.

PCIEx16_1 Link Speed [Auto]

 Allows you to configure the PCIEx16 speed for slot 1. Configuration options: [Auto] [Gen1] [Gen2] [Gen3]

Memory Configuration

 Allows you to configure the memory configuration parameters.

Memory Remap [Enabled]

Set this item to [Enabled] to support DRAM address remapping for 64-bit operating g systems. Configuration options: [Enabled] [Disabled] ]

PCH Configuration

 

PCI Express Configuration

 This item allows you to configure the PCI Express slots.

PCI-E Speed [Auto]

 This item allows your system to automatically select the PCI Express port speed. When set to [Gen1], the PCI-E port runs at PCI-E 1.0 speed. When set to [Gen2], the PCI-E port runs at PCI-E 2.0 speed. Configuration options: [Auto] [Gen1] [Gen2]

IOAPIC 24-119 Entries [Enabled]

 This item allows you to enable/disable the IOAPIC 24-119 Entries. IRQ24-119 may be used by PCH devices. Disabling those interrupts may cause certain devices to fail. Configuration options: [Enabled] [Disabled]

PCH Storage Configuration

 While entering Setup, the BIOS automatically detects the presence of SATA devices. The SATA Port items show Empty if no SATA device is installed to the corresponding SATA port.

Hyper Kit Mode [Disabled]

 Disable this option for M.2 devices. Enable this option for ASUS Hyper Kit card. Configuration options: [Disabled] [Enabled]

SATA Controller(s) [Enabled]

 This item allows you to enable or disable the SATA device. Configuration options: [Enabled] [Disabled]

Aggressive LPM Support [Disabled]

 This item allows you to enable or disable PCH entering link power state aggressively. Configuration options: [Disabled] [Enabled]

SMART Self Test [On]

 SMART (Self-Monitoring, Analysis and Reporting Technology) is a monitoring system that shows a warning message during POST (Power-on Self Test) when an error occurs in the hard disks. Configuration options: [On] [Off]

Hot Plug [Disabled] (SATA6G_1 (Gray) ~ SATA6G_6(Gray))

 These items allow you to enable/disable SATA Hot Plug Support. Configuration options: [Disabled] [Enabled]

PCH-FW Configuration

 

TPM Device Selection [Discrete TPM]

 This item allows you to select the TPM device. Configuration options: [Discrete TPM] [Firmware TPM]

Onboard Devices Configuration

 

HD Audio Controller [Enabled]

 This item allows you to use the Azalia High Definition Audio Controller. Configuration options: [Disabled] [Enabled]

Remarks

The following items appear only when you set the HD Audio Controller item to [Enabled].

DVI Port Audio [Disabled]

 Allows you to enable or disable the DVI port audio function. Configuration options: [Enabled] [Disabled]

Depop [Enabled]

 Configuration options: [Enabled] [Disabled]

PCIEX16_2 Configuration [Auto]

This item allows you to configure the PCIEx16_2 device settings. [Auto] Automatically detects the device installed. When a device is installed in PCIEx1_2 or PCIEx1_3 slot, PCIEx16_2 only runs in X2 Mode. When there are no devices installed in PCIEx1_2 or PCIEx1_3 slot, PCIEx16_2 can run in X4 Mode. [X2 Mode] PCIEx16_2 only runs in X2 Mode. PCIEx1_2 and PCIEx1_3 are enabled. [X4 Mode] PCIEx16_2 can run in X4 Mode. PCIEx1_2 and PCIEx1_3 are disabled.

Asmedia USB 3.1 Controller [Enabled]

 This item allows you to enable or disable the Asmedia USB 3.1 function. Configuration options: [Enabled] [Disabled]

RGB LED Lighting [On]

[On]The LEDs will always light up at the S0(Working), S3(Sleep), and S5(Soft off) states, but not light up at the S4/S5 state when the ErP Ready item is enabled. [Off]The LEDs will not light up.

Intel LAN Controller [Enabled]

[Enabled]Enables the Intel LAN controller. [Disabled]Disables the controller.

Intel PXE Option ROM [Off]

 This item appears only when you set the previous item to [On] and allows you to enable or disable the PXE OptionRom of the Intel LAN controller. Configuration options: [On] [Off] 

Serial Port Configuration

 The sub-items in this menu allow you to set the serial port configuration.

Serial Port 1 [On]

 Allows you to enable or disable the serial port (COM).Configuration options: [On] [Off]

Change Settings [IO=3F8h; IRQ=4]

 ]This item appears only when you set the Serial Port to [On] and allows you to select t the Serial Port base address. Configuration options: [IO=3F8h; IRQ=4] [IO=2F8h; ; IRQ=3] [IO=3E8h; IRQ=4] [IO=2E8h; IRQ=3] ]

APM Configuration

 

ErP Ready [Disabled]

 Allows BIOS to switch off some power at S5 to get the system ready for ErP requirement. . When set to [Enabled], all other PME options will be switched off. . Configuration options: [Enable(S4+S5)] [Enable(S5)] [Disabled] ]

Restore AC Power Loss [Power Off]

[Power On] The system goes into on state after an AC power loss. [Power Off] The system goes into off state after an AC power loss. [Last State] The system goes into either off or on state, whatever the system state was before the AC power loss.

Power On By PCI-E [Disabled]

 This item allows you to enable or disable the Wake-on-LAN function of the onboard LAN controller or other installed PCIe LAN cards. Configuration options: [Disabled] [Enabled]

Power On By Ring [Disabled]

[Disabled] Disables Ring to generate a wake event. [Enabled] Enables Ring to generate a wake event.

Power On By RTC [Disabled]

 This item allows you to enable or disable the RTC (Real-Time Clock) to generate a wake event and configure the RTC alarm date. When enabled, you can set the days, hours, minutes, or seconds to schedule an RTC alarm date. Configuration options: [Disabled] [Enabled]

Network Stack Configuration

 

Network Stack [Disabled]

 This item allows user to disable or enable the UEFI network stack. Configuration options: [Disabled] [Enabled]

Remarks

The following two items appear only when you set the previous item to [Enabled].

Ipv4 / Ipv6 PXE Support [Enabled]

 This item allows you to enable or disable the Ipv4/Ipv6 PXE wake event. Configuration options: [Disable Link] [Enabled]

HDD/SSD SMART Information

 This menu displays the SMART information of the connected devices.

USB Configuration

 The items in this menu allow you to change the USB-related features.

Remarks

 The USB Devices item shows the auto-detected values. If no USB device is detected, the item shows None.

Legacy USB Support [Enabled]

[Enabled]Your system supports the USB devices in legacy operating systems. [Disabled]Your USB devices can be used for BIOS setup only and cannot be recognized in the boot devices list. [Auto]Your system automatically detects the presence of USB devices at startup. If any USB devices are detected, the legacy USB support is enabled.

XHCI Hand-off [Disabled]

[Enabled]Enables the support for operating systems without an XHCI hand-off feature. [Disabled]Disables the XHCI Hand-off support.

USB Single Port Control

 This item allows you to enable or disable the individual USB ports. 

Sources and References

• https://dlcdnets.asus.com/pub/ASUS/mb/LGA1151/STRIX_B250F_GAMING/E12497_STRIX_B250F-GAMING_BIOS_UM_web_only_20170706.pdf
• https://dlcdnets.asus.com/pub/ASUS/mb/LGA1151/ROG_STRIX_Z390-I_GAMING/E14477_ROG_STRIX_Z390-I_GAMING_UM_WEB.pdf