Platform Settings for Altos Intel-based ICX servers

Firmware / BIOS / Microcode Settings

Power Performance Tuning
Allows the OS or BIOS to control the EPB (Energy Performance Bias)
The default settings of this option is "OS Controls EPB".
[OS Controls EPB] Allows operating system to control the Energy Performance Bias.
[BIOS Controls EPB] Allows BIOS to control the Energy Performance Bias.
ENERGY_PERF_BIAS_CFG mode (Energy Performance Bias Setting)
Allows the optmization for processor performance and power. The available options are as below.
The default settings of this option is "Balanced Performance".
[Extreme Performance] This mode will maximize system performance regardless of power saving.
[Maximum Performance] Provides more performance with more power consumption than performance mode.
[Performance] This mode is strongly toward performance, even at the expense of energy efficiency.
[Balanced Performance] Provides optimal performance efficiency.
[Balanced Power] Provides optimal power efficiency.
[Power] Provides more power saving than balanced power mode. The tradeoff is that performance may be reduced in this mode.
SNC (Sub NUMA Cluster)
This feature is similar to COD on previous generations. It produces more NUMA objects under ACPI. The major difference is that SNC LLC is unified and COD LLC is separated. Sub_NUMA Cluster enables the two-cluster; two-way interleave of IMC Interleaving will focus to 1-cluster. If there are DIMMs on both MCs, enable the SNC and set one-way interleave. It will enable SNC2 (two clusters)
The default settings of this option is "Disabled".
[Enabled] Enable Sub_NUMA Cluster.
[Disabled] Disable Sub_NUMA Cluster.
C1E Support
The C1E option features further reduce the total power consumption while processors in C1 state. When C1E is enabled, the processor is allowed to reduces the core clock frequency to minimum the power consumption as well as perforamnce.
The default settings of this option is "Enabled".
[Enabled] Enable C1E support.
[Disabled] Disable C1E support.