CPU P State Control Menu

►CPU P State Control

Note: This submenu is available when “Power Performance Tuning” is set to BIOS Controls EPB.

AVX P1

Use this feature to set the appropriate TDP level for the system. The Intel Advanced Vector Extensions (Intel AVX) P1 feature allows you to set the base P1 ratio for Streaming SIMD Extensions (SSE) and AVX workloads. Each P1 ratio has the corresponding AVX Impressed Current Cathodic Protection (ICCP) pre-grant license level, which refers to the selection between different AVX ICCP transition levels. The options are Nominal, Level 1, and Level 2. This feature is CPU-dependent.

Notes: 

  • This feature is available when "SpeedStep (P-States)" is set to Enabled.

  • This feature is NOT available when "Workload Profile" is set to Telco FlexRAN.

Intel SST-PP

Use this feature to choose from two additional Base-Frequency conditions maximum for CPU P State Control. The options are Auto, Level 0, Level 1, Level 2, Level 3, and Level 4. The options regarding SST-PP levels are CPU-dependent. (SST-PP is the abbreviation for Speed Select Technology-Performance Profile.)

Notes: 

  • This feature is available when "SpeedStep (P-States)" is set to Enabled and when the number of SST-PP levels supported by your CPU is no less than two.

  • This feature is NOT available when "Workload Profile" is set to Telco NFVI, Telco NFVI-FP, or Telco FlexRAN.

Dynamic SST-PP

Use this feature to disable or enable the dynamic SST-PP. The options are Disabled and Enabled.

Notes: 

  • This feature is available when "SpeedStep (P-States)" is set to Enabled and when your CPU supports the Intel Speed Select function.

  • This feature is available when "AVX P1" is set to Nominal.

  • This feature is NOT available when "Hardware P-States" is set to Disabled or Out of Band Mode.

  • This feature is NOT available when "Workload Profile" is set to HPC or Virtualization.

When "SpeedStep (P-States)" is set to Enabled, the information about SST-PP levels supported by your CPU is displayed.

  • SST-PP Level

  • Capable

  • Core Count

  • P1 Ratio

  • Package TDP (W)

  • DTS_Max

SpeedStep (P-States)

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.

Note: This feature is available when "Workload Profile" is set to Disabled.

EIST PSD Function

This feature reduces the latency that occurs when one P-state changes to another, thus allowing the transitions to occur more frequently. This will allow for more demand-based P-state switching to occur based on the real-time energy needs of applications so that the power-to-performance balance can be optimized for energy efficiency. The options are HW_ALL and SW_ALL.

Notes: 

  • This feature is available when "SpeedStep (P-States)" is set to Enabled.

  • This feature is NOT available when "Workload Profile" is set to Telco NFVI, Telco NFVI-FP, or Telco FlexRAN.

Turbo Mode (Available when "SpeedStep (P-States)" is set to Enabled and when "Workload Profile" is set to Disabled)

Select Enabled to allow the CPU to operate at the manufacturer-defined turbo speed by increasing CPU clock frequency. This feature is available when it is supported by the processors used in the system. The options are Disabled and Enabled.