Boot Performance Mode; Intel(R) Speedstep(Tm); Package Power Limit Msr Lock; Configurable Tdp Boot Mode - Supermicro C7Z270-CG User Manual

Chapter 4: AMI BIOS

Boot performance mode

This option enables the selection of the default CPU performance during
system boot. The options are Max Battery, Max Non-Turbo Perfor-
mance, and Turbo Performance.

Intel(R) SpeedStep(tm)

Enhanced Intel SpeedStep Technology (EIST) allows the system to
automatically adjust processor voltage and core frequency in an effort
to reduce power consumption and heat dissipation. Please refer to
Intel's web site for detailed information. The options are Disabled
and Enabled.

Package Power Limit MSR Lock

This feature enables or disables the locking of Package Power Limit
settings. When enabled Package Power Limit MSR will be locked and a
reset will be required to unlock the register. The options are Disabled
and Enabled.

Configurable TDP Boot Mode

This feature sets the TDP Boot Mode to either Nominal, Down, Up, or
Deactivated. When deactivated, it will set MSR to Nominal and MMIO
to zero.

Configurable TDP Lock

This option sets the lock bits on TURBO_ACTIVATION_RATIO and CON-
FIG_TDP_CONTROL. When lock is enabled, Custom Config TDP Count
will be forced to 1 and Custom Config TDP Boot Index will be forced to
0. The options are Disabled and Enabled.

CTDP BIOS Control

This feature enables CTDP control via runtime ACPI BIOS methods. The
options are Enabled and Disabled.

Power Limit 1 Override

This feature disables or enables the Power Limit 1 Override. If this op-
tion is disabled, the BIOS will program the default values for Power Limit
and Power Limit 1 Time Window. The options are Disabled and Enabled.

Power Limit 1

This feature configures Package Power Limit 1, in milliwatts. When the
limit is exceeded, the CPU ratio is lowered after a period of time (see
item below). A lower limit can save power and protect the CPU, while
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