Semiconductor & Computer Engineering
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Difference between revisions of "acpi/c-states"
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{{x86 title|C-states}} | {{x86 title|C-states}} | ||
| − | '''C-states''' are the [[idle state]] | + | '''C-states''' are the [[idle state]] policies that govern an [[x86]] system - i.e. states that shut down parts of the microprocessor when [[cores]] are not used. Modern x86 [[microprocessors]] have several C-states representing an increasingly larger part of the processor that's being shut down. Additionally because x86 MPUs are also exclusively [[multi-core]], most recent microarchitectures include two C-states: core-based C-states called '''CC-states''' and a package-based C-states called '''PC-states'''. |
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Revision as of 15:50, 22 January 2017
C-states are the idle state policies that govern an x86 system - i.e. states that shut down parts of the microprocessor when cores are not used. Modern x86 microprocessors have several C-states representing an increasingly larger part of the processor that's being shut down. Additionally because x86 MPUs are also exclusively multi-core, most recent microarchitectures include two C-states: core-based C-states called CC-states and a package-based C-states called PC-states.
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