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Chapter 4: AMI BIOS
AVX Ratio Offset
The AVX Ratio Offset specifies a negative offset from the Turbo Ratio
Limit MSR for AVX workloads. AVX is a more stressful workload. It is
helpful to lower the AVX ratio to ensure maximum possible ratio for SSE
workloads. Range is between 0-31. Enter 0 for Auto.
BCLK Aware Adaptive Voltage
When enabled, pcode will be aware of the BCLK frequency when cal-
culating the CPV/F curves. This is ideal for BCLK to avoid high voltage
overrides. The options are Disabled and Enabled.
Boot Performance Mode
This feature enables the selection of the default CPU performance dur-
ing system boot. The options are Max Non-Turbo Performance 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 website for detailed information. The options are Disabled
and Enabled.
Turbo Mode
This feature allows processor cores to run faster than the frequency rec-
ommended by the manufacturer. 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 De-
activate. When deactivated, it will set MSR to Nominal and MMIO to zero.
Configurable TDP Lock
This feature 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.
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