Chapter 4: AMI BIOS
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Turbo Mode
This feature allows processor cores to run faster than the rated operating
frequency in specic conditions. The options are Disabled and Enabled.
If this feature is set to Enabled, the following items will be displayed:
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.
Congurable 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.
Congurable TDP Lock
This option sets the lock bits on TURBO_ACTIVATION_RATIO and CON-
FIG_TDP_CONTROL. When lock is enabled, Custom Cong TDP Count
will be forced to 1 and Custom Cong TDP Boot Index will be forced to
0. The options are Enabled and Disabled.
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 congures 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
a higher limit improves performance. This value must be between Min
Power Limit TDP limit. If value is '0' the BIOS will program the TDP value.
Use the number keys on your keyboard to enter the value. The default
setting is dependent on the CPU.
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