Asus P6X58-E PRO - Manual (Page 82)

3-22 Chapter 3: BIOS setup
Chapter 3
Active Processor Cores [All]
Allows you to choose the number of CPU cores to activate in each processor package.
Configuration options: [All] [1] [2]
A20M [Disabled]
[Enabled] Allows Legacy OSes to be compatible with APs.
[Disabled] Disables this function.
Intel(R) SpeedStep(TM) Tech [Enabled]
[Enabled] The CPU speed is controlled by the operating system.
[Disabled] The CPU runs at its default speed.
Intel(R) TurboMode Tech [Enabled]
This item appears only when you enable the Intel(R) SpeedStep(TM) Tech item.
[Enabled]
Allows processor cores to run faster than marked frequency in specific
condition.
[Disabled] Disables this function.
Intel(R) C-STATE Tech [Disabled]
The Intel ® C-State Technology allows the CPU to save more power under idle mode.
[Enabled] Enable this item only when you install a C-State Technology-supported
CPU.
[Disabled] Disables this function.
C State package limit setting [Auto]
This item appears only when you set the Intel(R) C-STATE Tech item to [Enabled]. We
recommend that you set this item to [Auto] for BIOS to automatically detect the C-State mode
supported by your CPU. Configuration options: [Auto] [C1] [C3] [C6]
C1 Auto Demotion [Enabled]
This item appears only when you set the Intel(R) C-STATE Tech item to [Enabled].
[Enabled]
When enabled, CPU will conditionally demote C3/C6/C7 requests to C1
based on uncore auto-demote information.
[Disabled] Disables this function.
C3 Auto Demotion [Enabled]
This item appears only when you set the Intel(R) C-STATE Tech item to [Enabled].
[Enabled]
When enabled, CPU will conditionally demote C6/C7 requests to C3 based
on uncore auto-demote information.
[Disabled] Disables this function.