ASRock Core 100HT-BD Active Processor Cores, A20M, Intel R SpeedSteptm tech, Intel R C-STATE tech

Active Processor Cores

Use this item to select the number of cores to enable in each processor package. Configuration options: [All], [1] and [2]. The default value is [All].

A20M

Use this item to enable or disable A20M. Legacy OS and AP may need A20M enabled. 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 [Enabled]. 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® VistaTM / 7 and want to enable this function, please set this item to [Enabled].

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 con- trol 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 re- quest 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 low- est common denominator of both cores’ requests, portraying a single CPU entity to the chipset power management hardware and flows. Thus, soft- ware can manage each core independently, while the actual power man- agement adheres to the platform and CPU shared resource restrictions.

C State package limit setting

This item appears only when you set the item “Intel (R) C-STATE tech.” to [Enabled]. The selected option will programme into C State package limit register. Configuration options: [Auto], [C3] and [C6]. The default value is [Auto].

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