Processors

Displays summary of the installed processors.

[Enabled] improves the overall processor performance when all processor cores are not being fully utilized. A processor core can run above its rated frequency for a short period of time when it is in turbo mode.

When a preset mode is selected, the low-level settings are not changeable and will be grayed out. To change the settings, choose System Settings > Operating Modes > Choose Operating Mode > Custom Mode.

You can select to controls CPU P-states (performance states).

[None]: Disables all P-states and processors work either at rated frequency or in Turbo Mode (if Turbo Mode is enabled).

[Legacy]: CPU P-states will be presented to the OS. The OS power management (OSPM) controls which P-state is selected.

[Autonomous]: The P-states are fully controlled by system hardware. No P-state support is required in the OS or VM.

[Cooperative] is a combination of [Legacy] and [Autonomous]. The P-states are still controlled by hardware but the OS can provide hints to the hardware for P-state limits, indicating the desired setting.

When a preset mode is selected, the low-level settings are not changeable and will be grayed out. To change the settings, choose System Settings > Operating Modes > Choose Operating Mode > Custom Mode.

C-states reduces power consumption during the idle time.

[Legacy]: The operating system initiates the C-state transitions. For E5/E7 processors, ACPI C1/C2/C3 map to Intel C1/C3/C6. For 6500/7500 processors, ACPI C1/C3 map to Intel C1/C3 (ACPI C2 is not available). Some OS may defeat the ACPI mapping (e.g., Intel idle driver).

[Enabled]: Saves power by halting processor cores that are idle.

Using this feature requires an operating system supporting C1E state. Changes take effect after the system rebooted.

When a preset mode is selected, the low-level settings are not changeable and will be grayed out. To change the settings, choose System Settings > Operating Modes > Choose Operating Mode > Custom Mode > C-States > [Legacy]/[Disabled] .

Enables or disables logical processor cores on processors

Enables or disables Intel® Trusted Execution Technology (Intel® TXT).

Enables or disables Intel® Virtualization Technology.

Lightly-threaded applications and some benchmarks can take advantage of this feature when it is enabled.

Lightly-threaded applications and some benchmarks can take advantage of this feature when it is enabled.

Lightly-threaded applications and some benchmarks can take advantage of this feature when it is enabled.

It is recommended that the Data Cache Unit (DCU) IP Prefetcher is set to [Enabled] for the most environments. However, some environments may benefit from having it set to [Disabled], e.g. Java.

[Enabled]: The optimal turbo frequency of processors can be adjusted dynamically based on processor utilization. This feature is also influenced by Power/Performance Bias.

When a preset mode is selected, the low-level settings are not changeable and will be grayed out. To change the settings, choose System Settings > Operating Modes > Choose Operating Mode > Custom Mode > Turbo Mode > [Enabled]

When [Enabled] is selected, the processor uncore (all miscellaneous logic inside the processor package) dynamically changes the speed based on the workload.

Limit CPU physical address to 46 bits to support older Hyper-v.

Enables or disables Total Memory Encryption (TME).

Enables or disables Multikey Total Memory Encryption (MK-TME).

Displays Max MKTME (Multi-Key Total Memory Encryption) Keys.

Enables or disables SGX Factory Reset.

When [Enabled] is selected, it erases all registration data on subsequent boot, and additionally forces an Initial Platform Establishment flow when SGX is enabled.

Enables or disables Software Guard Extensions (SGX).

Enables or disables Software Guard Extensions (SGX) Package Info In-Band Access.

Setting the PRMRR Size.

You can select the appropriate snoop mode based on the workload.

Setting the snoop mode preference does not always guarantee that it will be selected. The mode will be changed if the current hardware configuration does not support the desired mode

F1 LLC prefetcher is an additional prefetch mechanism on top of the existing prefetchers that prefetch data into the core DCU and MLC.

Enabling LLC prefetch gives the core prefetcher the ability to prefetch data directly into the LLC without necessarily filling into the MLC.

Enables/disables trust for the system's PECI interface.

[Disable] (PECI not trusted) can be used for a higher level of security but some functions such as memory and I/O utilization reporting may not work.

Selects number of cores enabled within each CPU package.

The number "n" is the maximum core count supported by the installed processor.

The maximum frequency (turbo, AVX, and non turbo) can be restricted to a frequency that is between the maximum turbo frequency for the installed processor and 1.2GHz.

The max frequency for N+1 cores can not be higher than N cores. If an unsupported frequency is entered, it will automatically be limited to a supported value.

If the CPU Frequency Limits are being controlled through application software, leave this feature at the default [Full turbo uplift] and change the settings by choosing System Settings > Operating Modes > Choose Operating Mode > Custom Mode > Turbo Mode > Enabled.

Enable or Disable Software SRAM.

Enable or Disable Data Streams Optimizer (DSO).