ASRock P45DE3 User Manual - Page 48

Intel R C-STATE tech., Intel R SpeedSteptm tech.

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Page 48 highlights

Intel (R) SpeedStep(tm) tech. Intel (R) SpeedStep(tm) tech. is Intel's new power saving technology. Processor can switch between multiple frequency and voltage points to enable power savings. The default value is [Auto]. Configuration options: [Auto], [Enabled] and [Disabled]. If you install Windows® XP and select [Auto], you need to set the "Power Schemes" as "Portable/Laptop" to enable this function. If you install Windows® VistaTM and want to enable this function, please set this item to [Enabled]. This item will be hidden if the current CPU does not support Intel (R) SpeedStep(tm) tech.. Please note that enabling this function may reduce CPU voltage and lead to system stability or compatibility issue with some power supplies. Please set this item to [Disable] if above issue occurs. Intel (R) C-STATE tech. Intel (R) C-STATE tech. is achieved by making the power and thermal control unit part of the core logic and not part of the chipset as before. Migration of the power and thermal management flow into the processor allows us to use a hardware coordination mechanism in which each core can request any C-state it wishes, thus allowing for individual core savings to be maximized. The CPU C-state is determined and entered based on the lowest common denominator of both cores' requests, portraying a single CPU entity to the chipset power management hardware and flows. Thus, software can manage each core independently, while the actual power management adheres to the platform and CPU shared resource restrictions. Configuration options are: [C2], [C3], [C4] and [Disabled]. The default value is [Disabled]. 48

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Please note that enabling this function may reduce CPU voltage and lead to system
stability or compatibility issue with some power supplies. Please set this item to
[Disable] if above issue occurs.
Intel (R) C-STATE tech.
Intel (R) C-STATE tech. is achieved by making the power and thermal control
unit part of the core logic and not part of the chipset as before. Migration of the
power and thermal management flow into the processor allows us to use a
hardware coordination mechanism in which each core can request any C-state
it wishes, thus allowing for individual core savings to be maximized. The CPU
C-state is determined and entered based on the lowest common denominator
of both cores’ requests, portraying a single CPU entity to the chipset power
management hardware and flows. Thus, software can manage each core
independently, while the actual power management adheres to the plat-
form and CPU shared resource restrictions. Configuration options are:
[C2], [C3], [C4] and [Disabled]. The default value is [Disabled].
Intel (R) SpeedStep(tm) tech.
Intel (R) SpeedStep(tm) tech. is Intel’s new power saving technology.
Processor can switch between multiple frequency and voltage points to
enable power savings. The default value is [Auto]. Configuration options:
[Auto], [Enabled] and [Disabled]. If you install Windows
®
XP and select
[Auto], you need to set the “Power Schemes” as “Portable/Laptop” to en-
able this function.
If you install Windows
®
Vista
TM
and want to enable this
function, please set this item to [Enabled]. This item will be hidden if the
current CPU does not support Intel (R) SpeedStep(tm) tech..