Reference Guide

BIOS.SysProfileSettings.DlwmForcedWidth (Read or Write)
Description Indicates the forced width of the link width between sockets.
Legal Values
● x2
● x8
● x16
Default Value x8
Write Privilege Server Control
License Required iDRAC Express or iDRAC Enterprise
Dependency Not applicable
BIOS.SysProfileSettings.DynamicLinkWidthManagement (Read or
Write)
Description Dynamic link width management (DLWM) reduces the XGMI link width between sockets from x16 to x8
when no traffic is detected on the link. This feature is optimized to trade power between core and high
I/O memory bandwidth workloads. Unforced value enables DLWM to manage the link width.
Legal Values
● Forced
● Unforced
Default Value Not Applicable
Write Privilege Server Control
License Required iDRAC Express or iDRAC Enterprise
Dependency Not applicable
BIOS.SysProfileSettings.CollaborativeCpuPerfCtrl (Read or Write)
Description
Allows for collaboration between the operating system and the hardware to dynamically control processor
frequency for optimal power efficiency. This feature works only when CPU Power Management is set to
System DBPM (DAPC), or Hardware P States. Otherwise, changing this setting does not impact system
power or performance. Read-only unless System Profile is set to Custom.
Has a dependency on the System Profile. Can only be set if the System Profile is set to Custom. Is set to
Disabled for all the other System Profiles.. This setting is only valid if the CPU Power Management is set
to DAPC, or HWPM.
Legal Values
● Enabled
● Disabled
Default Value Not Applicable
Write Privilege Server Control
License Required iDRAC Express or iDRAC Enterprise
Dependency Not applicable
BIOS.SysProfileSettings.CpuInterconnectBusLinkPower (Read or
Write)
Description
When enabled, CPU interconnect bus link power management is enabled
BIOS Attributes 335