Power Management And Temperature Control - Matrox 4Sight GPm Installation And Hardware Reference

20 Chapter 1: Before you begin
ACPI technology
Enhanced Intel
SpeedStep
technology

Power management and temperature control

Matrox 4Sight GPm is compliant with advanced configuration and power
interface (ACPI) technology. This technology monitors how the BIOS, operating
system, and peripheral devices communicate with each other about power usage.
ACPI allows the Matrox 4Sight GPm unit to conserve energy by transitioning
unused devices into lower power states. ACPI components gather information
about power consumption from the unit and pass this information onto the
operating system. The operating system then manages power to the unit's different
components on an as-needed basis.
The ACPI features implemented in the Matrox 4Sight GPm unit include:
• The ability for the unit to perform a complete shut-down, in which it will be
powered off automatically.
• Support for an S4 sleeping state, for which the operating system can be enabled
or disabled to automatically wake the unit from hibernation mode.
• Support for processor power management.
• Support for temperature management using passive cooling techniques.
The Intel Core i3 and i7 processors use the "configurable TDP" (cTDP)
technology to dynamically reconfigure the thermal envelope of the processor,
based on the environmental temperature. In case of extreme ambient temperature,
the power will automatically reduce its overall consumption.
The Intel Core i3, i7, and Celeron processors use Enhanced Intel SpeedStep
technology (EIST) to enable very high performance while also meeting the
power-conservation needs of the Matrox 4Sight GPm unit. The operating system
dynamically adjusts processor voltage and core frequency (CPU speed) based on
the CPU's demand for processing power. This results in decreased average power
consumption and decreased average heat production.