User Manual
Table Of Contents
- 1.1 Knowing BIOS
- 1.2 BIOS setup program
- 1.3 My Favorites
- 1.4 Main menu
- 1.5 Ai Tweaker menu
- 1.6 Advanced menu
- 1.6.1 Platform Misc Configuration
- 1.6.2 CPU Configuration
- 1.6.3 System Agent (SA) Configuration
- 1.6.4 PCH Configuration
- 1.6.5 PCH Storage Configuration
- 1.6.6 PCH-FW Configuration
- 1.6.7 Onboard Devices Configuration
- 1.6.8 APM Configuration
- 1.6.9 PCI Subsystem Settings
- 1.6.10 USB Configuration
- 1.6.11 Network Stack Configuration
- 1.6.12 NVMe Configuration
- 1.6.13 HDD/SSD SMART Information
- 1.7 Monitor menu
- 1.8 Boot menu
- 1.9 Tool menu
- 1.10 Exit menu
- 1.11 Updating BIOS

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ROG STRIX Z390-E GAMING BIOS Manual
CPU Current Capability
This item allows you to set the shut off current limit for external voltage regulator. A
higher setting will allow the voltage regulator to supply more current while a lower
setting will cause the voltage regulator to shut off the system when the supplied current
is higher than the set value.
Conguration options: [Auto] [100%] - [170%]
Congure higher values when overclocking or under a high loading for extra power support.
CPU VRM Switching Frequency
This item affects the VRM transient response speed and the component thermal
production. Select [Manual] to congure a higher frequency for a quicker transient
response speed.
Conguration options: [Auto] [Manual]
DO NOT remove the thermal module. The thermal conditions should be monitored.
The following item appears only when you set the CPU VRM Switching Frequency to
[Manual].
Fixed CPU VRM Switching Frequency (KHz)
This item allows you to set a higher frequency for a quicker transient
response speed. Use the <+> or <-> to adjust the value.
The following item appears only when the CPU VRM Switching Frequency is set to
[Auto].
VRM Spread Spectrum
This item allows to enhance the system stability.
Conguration options: [Auto] [Disabled] [Enabled]
CPU Power Duty Control
CPU power duty control adjusts the duty cycle of each VRM phase based upon current
and/or temperature.
[T. Probe] Select to set the VRM thermal balance mode.
[Extreme] Select to set the VRM current balance mode.
DO NOT remove the thermal module when setting this item to [Extreme]. The thermal
conditions should be monitored.