User Manual

Table Of Contents
5-54
Chapter 5: BIOS Setup
CPU C State Control
Enable Monitor MWAIT [Enable]
Allows you to enable or disable Monitor and MWAIT instructions.
Configuration options: [Disable] [Enable]
CPU C1 auto demotion [Enable]
Allows CPU to automatically demote to C1. Takes effect after reboot.
Configuration options: [Disable] [Enable]
CPU C1 auto undemotion [Enable]
Allows CPU to automatically undemote from C1. Takes effect after reboot.
Configuration options: [Disable] [Enable]
CPU C6 Report [Auto]
Allows you to enable or disable CPU C6 (ACPI C3) report to OS.
Configuration options: [Disable] [Enable] [Auto]
Enhanced Halt State (C1E) [Enable]
Core C1E auto promotion Control. Takes effect after reboot.
Configuration options: [Disable] [Enable]
OS ACPI Cx [ACPI C2]
Allows you to select to report CC3/CC6 to OS ACPI C2 or ACPI C3.
Configuration options: [ACPI C2] [ACPI C3]
Package C State Control
Package C State [Auto]
Allows you to select Package C State limit.
Configuration options: [C0/C1 state] [C2 state] [C6(non Retention state] [Auto]
Register Access Low Latency Mode [Disabled]
Enable low latency mode for register accesses.
Configuration options: [Disabled] [Enabled]
Enabling this mode will prevent PkgC6 as register access fabric is prevented from going to
idle.
CPU Thermal Management
CPU T State Control
Software Controlled T-States [Disabled]
Allows you to enable or disable Software Controlled T-States.
Configuration options: [Disabled] [Enabled]
The following item appears only when
Software Controlled T-States
is set to
[Enabled]
.
T-State Throttle Level [Disable]
On-Die Thermal Throttling.
Configuration options: [Disabled] [6.25%] [12.5%][18.75%][25.0%][31.25%]
[37.5%][43.75%][50.0%][56.25%][62.5%][68.75%][75.0%] [81.25%][87.5%]
[93.75%]