Cpu thermal monitor function sdo, Execute-disable bit capability, Hyper threading technology – Kontron CP305 BIOS User Manual

Page 25: Cp305 bios advanced setup

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CP305 BIOS

Advanced Setup

ID 1035-8356, Rev. 1.0

Page 15

P R E L I M I N A R Y

CPU Thermal Monitor Function

SDO

This function is used to specify the Thermal Monitor Feature. BIOS chooses Intel® Thermal
Monitor 1 (TM1) to control the processor temperature and the power consumption by activating
the Thermal Control Circuit (TCC) when the processor silicon reaches its maximum operating
temperature.

If the processor supports the Intel® Enhanced SpeedStep™ technology, BIOS chooses Intel®
Thermal Monitor 2 (TM2), which controls the processor temperature and power consumption
by initiating an Intel® Enhanced Speedstep™ Technology transition when the processor silicon
reaches its maximum operating temperature.

If Disabled is selected, the BIOS disables the Thermal Monitor 1 or the Thermal Monitor 2 Fea-
ture respectively, i.e. the BIOS disables the CPU built in automatic thermal throttling. If the CPU
becomes overheated, the CP305 will shut off automatically.

Optimal and Fail-Safe settings: Enabled

Note:

Intel® Thermal Monitor 1 or Intel® Thermal Monitor 2 must be enabled for the pro-
cessor to operate within specification.

Execute-Disable Bit Capability

This function is used to enable the Execute-Disable Bit Capability feature.

Optimal and Fail-Safe default settings: Enabled

Hyper Threading Technology

This function allows the ACPI OSs to simulate two processors. This means that only one phys-
ical CPU is present but the OS sees two virtual CPUs. Via this function, the system perfor-
mance can be significantly improved.

Optimal and Fail-Safe default settings: Enabled

SETTING

DESCRIPTION

Disabled

Use this setting to disable the CPU Thermal Monitor function.

Enabled

Use this setting to enable the CPU Thermal Monitor function.

SETTING

DESCRIPTION

Disabled

Use this setting to disable the Execute-Disable Bit Capability function. When this setting is
used, the BIOS forces the XD feature flag to always return to 0.

Enabled

Use this setting to enable the Execute-Disable Bit Capability function.

SETTING

DESCRIPTION

Disabled

Use this setting to disable the Hyper Threading function.

Enabled

Use this setting to enable the Hyper Threading function.

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