MSI Z87-MPOWER-MAX manual Accordingly, Power-saving in halt state, Then C0

Chapter 3

▶Intel C-State [Auto]

C-state is a processor power management technology defined by ACPI.

[Auto]	This setting will be configured automatically by BIOS.
[Enabled]	Detects the idle state of system and reduce CPU power consumption
	accordingly.
[Disabled]	Disable this function.

▶C1E Support [Disabled]

Enables or disables the C1E function for power-saving in halt state. This item appears when "Intel C-State" is enabled.

[Enabled]	Enables C1E function to reduce the CPU frequency and voltage for
	power-saving in halt state.
[Disabled]	Disables this function.

▶Package C State limit [Auto]

This item allows you to select a CPU C-state mode for power-saving when system is idle. This item appears when "Intel C-State" is enabled.

[Auto]	This setting will be configured automatically by BIOS.
[C0~C7s]	The power-saving level from high to low is C7s, C7, C6, C3, C2,
	then C0.
[No limit]	No C-state limit for CPU.

▶LakeTiny Feature [Disabled]

Enables or disables Intel Lake Tiny technology with iRST for SSD. This item appears when “Intel C-State” is enabled.

[Enabled]	Enhance the dynamic IO load adjusted performance for accelerating
	the SSD speed.
[Disabled]	Disables this feature.

Note: The following items will appear when "Intel Turbo Boost " is enabled.

▶Long Duration Power Limit (W) [Auto]

Sets the long duration TDP power limit for CPU in Turbo Boost mode.

▶Long Duration Maintained (s) [Auto]

Sets the maintaining time for "Long duration power Limit(W)".

▶Short Duration Power Limit (W) [Auto]

Sets the short duration TDP power limit for CPU in Turbo Boost mode.

▶CPU Current limit (A) [Auto]

Sets maximum current limit of CPU package in Turbo Boost mode. When the current is over the specified limit value, the CPU will automatically reduce the core frequency for reducing the current.

▶1/2/3/4-Core Ratio Limit [Auto]

These items only appear when a CPU that support this function is installed. These items allow you to set the CPU ratios for different number of active cores in turbo boost mode. These items appear when the installed processor supports this function.

BIOS Setup 3-24