Owners Manual

Option Description
Virtualization
Technology
Enables or disables the additional hardware capabilities provided for virtualization. This option is set to
Enabled by default.
Address
Translation
Service (ATS)
Defines the Address Translation Cache (ATC) for devices to cache the DMA transactions. This option
provides an interface between CPU and DMA Memory Management to a chipset's Address Translation
and Protection Table to translate DMA addresses to host addresses. This option is set to Enabled by
default.
Adjacent Cache
Line Prefetch
Optimizes the system for applications that need high utilization of sequential memory access. This option
is set to Enabled by default. You can disable this option for applications that need high utilization of
random memory access.
Hardware
Prefetcher
Enables or disables the hardware prefetcher. This option is set to Enabled by default.
DCU Streamer
Prefetcher
Enables or disables the Data Cache Unit (DCU) streamer prefetcher. This option is set to Enabled by
default.
DCU IP
Prefetcher
Enables or disables the Data Cache Unit (DCU) IP prefetcher. This option is set to Enabled by default.
Logical
Processor Idling
Enables you to improve the energy efficiency of a system. It uses the operating system core parking
algorithm and parks some of the logical processors in the system which in turn allows the corresponding
processor cores to transition into a lower power idle state. This option can only be enabled if the
operating system supports it. It is set to Disabled by default.
Configurable TDP Enables you to reconfigure the processor Thermal Design Power (TDP) levels during POST based on the
power and thermal delivery capabilities of the system. TDP verifies the maximum heat the cooling system
is needed to dissipate. This option is set to Nominal by default.
NOTE: This option is only available on certain stock keeping units (SKUs) of the processors.
X2Apic Mode Enables or disables the X2Apic mode.
Number of Cores
per Processor
Controls the number of enabled cores in each processor. This option is set to All by default.
Processor 64-bit
Support
Specifies if the processor(s) support 64-bit extensions.
Processor Core
Speed
Specifies the maximum core frequency of the processor.
Process Bus
Speed
Displays the bus speed of the processor.
NOTE: The processor bus speed option displays only when both processors are installed.
Processor 1
NOTE: Depending on the number of CPUs, there may be up to four processors listed.
The following settings are displayed for each processor installed in the system:
Option Description
Family-Model-
Stepping
Specifies the family, model, and stepping of the processor as defined by Intel.
Brand Specifies the brand name.
Level 2 Cache Specifies the total L2 cache.
Level 3 Cache Specifies the total L3 cache.
Number of Cores Specifies the number of cores per processor.
Related concepts
Processor Settings on page 40
Pre-operating system management applications
41