Building the Power-Efficient PC: A Developer's Guide to ACPI Power Management
This book provides developers and integrators with practical knowledge and design techniques for building PCs that address the increasing demand for energy conservation.
Building the Power-Efficient PC: A Developer's Guide to ACPI Power Management
By Barry Press
J-P
Junction Temperature
Junction temperature is the temperature at the point of heat generation between P-type and N-type semiconductor material in a transistor or diode element.
L2 Cache
Level two (L2) cache is the second level of the hierarchical cache subsystem located between the CPU and main memory. Consisting of SRAM and a cache controller, the L2 cache is closer to main memory than the L1 cache. L1 cache is always integrated on the CPU chip, while L2 cache may be external or integrated.
Legacy
Legacy, in the context of power management, is a computer state where power management policy decisions are made by the platform hardware and/or firmware shipped with the system. Legacy power management features found in today s systems are used to support legacy, non-OSPM operating systems.
Legacy Hardware
Legacy hardware refers to a computer system or device that has no ACPI or operating system-directed power management (OSPM) support.
Legacy OS
A legacy OS is an operating system that is not aware of and does not direct the power management functions of the system. Included in this category are operating systems with APM 1. x support.
Mechanical Off
See G3 Global State Mechanical Off. .
Multiple APIC Description Table (MADT)
The Multiple APIC Description Table (MADT) is used to describe the APIC implementation on systems supporting an APIC and/or SAPIC. Following the MADT is a list of APIC/SAPIC structures that declare the APIC/SAPIC features of the machine.
Non-Volatile Sleep (NVS)
Non-volatile sleep (also known as S4 Sleeping...
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