Asus Rampage III Extreme - Manual (Page 110)

3-24 Chapter 3: BIOS setup
A20M �Disabled�
[Enabled] Legacy OSes and APs may need this function enabled.
[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) Turbo Mode Tech �Enabled�
[Enabled] Allows the processor cores to run faster than the marked frequency
in specific condition.
[Disabled] Disables this function.
Intel(R) C-STATE Tech �Disabled�
[Enabled] Allows the CPU to save more power under idle mode. 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]