Chapter 4: UEFI BIOS
81
Per-core HT Disable
Denes the per-core HT disable. Use the number keys on your keyboard to enter the
value. The default setting is 0.
Race To Halt (RTH)
This feature enables Race To Halt, which dynamically increases CPU frequency in order
to enter package C-State faster. This will reduce overall power consumption. The options
are Disabled and Enabled.
Intel(R) Speed Shift Technology
This feature enables Intel Speed Shift, which allows the operating system to hand control
of CPU frequency and voltage to the processor. This increases P-state change speed
and improves power eciency. The options are Disabled and Enabled.
C States
C-State architecture, a processor power management platform developed by Intel, can
further reduce power consumption from the basic C1 (Halt State) state that blocks clock
cycles to the CPU. Select Enabled for CPU C-State support. The options are Disabled
and Enabled.
*If this feature above is set to enabled, the following features will become available
for conguration:
Enhanced C-states
This feature enables Enhanced C1 Power State to lower system energy consumption
while all cores are in C-State. The options are Disabled and Enabled.
Thermal Monitor
This feature enables CPU thermal monitor. The options are Disabled and Enabled.
Energy Ecient Turbo
Select Enabled to activate Energy Ecient Turbo. This feature will opportunistically lower
the turbo frequency to increase eciency. We recommend to leave this enabled and
disable only in overclocking situations where the turbo frequency must remain constant.
The options are Disabled and Enabled, and Auto.
Ring
Ring Max OC Ratio
Enter a value for the maximum overclock ratio for CPU ring. The default is Auto.