Operating Modes

Select the operating mode based on your preference.

Power savings and performance are heavily dependent on the hardware and the software running on the system.

When this feature is set to [Performance], performance is more predictable (deterministic) and operates at the lowest common denominator among the cores. But aggregate peak performance may be reduced.

When this feature is set to [Power], cores can scale frequency independently. Aggregate performance may be higher, but predictability is lower.

When this feature is set to [Enabled] is selected, the cores can run at turbo frequencies.

Set the maximum power consumption for the processor.

[Auto] sets cTDP=TDP for the installed processor SKU.

[Maximum] sets the maximum allowed cTDP value for the installed processor SKU. Usually, maximum is greater than TDP. If a manual value is entered that is greater than the maximum value allowed, the value will be internally limited to the maximum allowable value. cTDP is only configurable before booting the operating system.

Set the power consumption for the processor manually.

Sets the CPU package power limit.

If [Auto] is selected, it will be set to the maximum value allowed by the installed processor.

If a manual value is entered that is greater than the maximum value allowed, the value will be internally limited to the maximum allowable value.

The maximum value allowed for PPL is the cTDP limit. Compared to cTDP, Package Power Limit (PPL) can be changed at runtime and PPL supports a much lower effective limit than cTDP.

Package Power Limit (PPT) [W].

Memory speed is changed dynamically according to the combination of the installed processor SKU, DIMM type, number of DIMMs per channel, and system board support.

The system operates at the rated speed of the slowest DIMM in the system when populated with different speed DIMMs. If DIMMs are installed with a rated speed below 3600, this will cause the memory speed set to the minimum value.

Enable or disable efficiency mode.

When this feature is enabled, use power efficiency optimized CCLK DPM settings.

Sets the xGMI speed.

N is the maximum speed and is auto-calculated from the system board capabilities. For system boards that do not support 4 discrete xGMI speed choices, some menu choices besides “Minimum” will result in the xGMI speed getting set to the minimum value.

Sets the xGMI speed.

N is the maximum speed and is auto-calculated from the system board capabilities. NUMA-unaware workloads may need maximum xGMI bandwidth because of extensive cross socket communications. NUMA-aware workloads may want to minimize xGMI power because they do not have a lot of cross socket traffic and prefer to use the increased CPU boost.

Enable or disable IO based C-state generation and DF C-states.

When [Auto] is selected, the processor DF P-states (uncore P-states) are dynamically adjusted. The frequency dynamically changes based on the workload.

Selecting P0, P1, or P2 forces the DF to a specific P-state frequency.

Enable or disable data fabric (DF) C-states.

Data fabric C-states may be entered when all cores are in CC6.

Enable or disable processor P1 P-state.

Enable or disable processor P2 P-state.