ASROCK B450M-HDV R4.0 User Manual page 53

SMT Mode
This item can be used to disable symmetric multithreading. To re-enable SMT, a
power cycle is needed after selecting [Auto].
Warning: S3 is not supported on systems where SMT is disabled.
DRAM Timing Configuration
DRAM Frequency
If [Auto] is selected, the motherboard will detect the memory module(s) inserted
and assign the appropriate frequency automatically.
AM4 Advance Boot Training
Set TR4 Advance boot training to [Auto] to increase compatibility.
Voltage Configuration
DRAM Voltage
Use this to select DRAM Voltage. The default value is [Auto].
+1.8 Voltage
Use this to select +1.8 Voltage. The default value is [Auto].
Save User Default
Type a profile name and press enter to save your settings as user default.
Load User Default
Load previously saved user defaults.
Save User UEFI Setup Profile to Disk
It helps you to save current UEFI settings as an user profile to disk.
Load User UEFI Setup Profile from Disk
You can load previous saved profile from the disk.
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