Asus RS724Q-E6/RS12 - Manual (Page 82)

5-16 Chapter 5: BIOS setup
The following items appear only when you set the Intel(R) C-STATE Tech
item to [Enabled].
C3 State [ACPI C3]
Allows you to select Nehalem C state action.
Configuratiton options: [Disabled] [ACPI C2] [ACPI C3]
C6 State [Enabled]
Allows you to select Nehalem C state action.
Configuratiton options: [Disabled] [Enabled]
C State package limit setting [Auto]
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]
C3 Auto Demotion [Enabled]
When this item is enabled, the CPU will conditionally demote C6 requests to C3
based on the uncore auto-demote information.
Configuration options: [Disabled] [Enabled]
ACPI T State [Enabled]
Enables or disables processor throttling report in ACPI.
Configuration options: [Disabled] [Enabled]