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

ROG STRIX Z390-E GAMING BIOS Manual
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CPU Core/Cache Current Limit Max.
This item allows you to congure a higher current limit to prevent a frequency or power
throttling when overclocking. Use the <+> and <-> keys to adjust the value.
Conguration options: [Auto] [0.00] - [255.75]
Ring Down Bin
This item allows you to enable or disable the Ring Down Bin feature. When enabled, the CPU
will down bin the ring ratio, and the requested maximum ring ratio may not be observed.
Conguration options: [Auto] [Disabled] [Enabled]
Please use caution when disabling this feature. Disabling this feature may result in
overvoltaging the CPU.
Min. CPU Cache Ratio
This item allows you to set the minimum possible CPU cache ratio. Use the <+> and <-> keys
to adjust the value.
Conguration options: [Auto] [8] - [83]
Max. CPU Cache Ratio
This item allows you to set the maximum possible CPU cache ratio. Use the <+> and <->
keys to adjust the value.
Conguration options: [Auto] [8] - [83]
BCLK Aware Adaptive Voltage
When this option is enabled, pcode will be aware of the BCLK frequency when calculating the
CPU V/F curves. This is ideal for BCLK OC to avoid high voltage overrides. Uses OC Mailbox
command 0x15.
Conguration options: [Disabled] [Enabled]
CPU Core/Cache Voltage
Congures the mode of Voltage fed to the cores of the processor.
Conguration options: [Auto] [Manual Mode] [Offset Mode] [Adaptive Mode]
The following items appear only when you set the CPU Core/Cache Voltage to [Manual
Mode].
CPU Core Voltage Override
Allows you to congure the CPU Core voltage.
Conguration options: [Auto] [0.600] - [1.700]
The following items appear only when you set the CPU Core/Cache Voltage to [Offset
Mode].