Option
Description
Logical Processor
Enables or disables the logical processors and displays the number of logical
processors. If this option is set to
Enabled
, the BIOS displays all the logical
processors. If this option is set to
Disabled
, the BIOS displays only one logical
processor per core. This option is set to
Enabled
by default.
Alternate RTID
(Requestor
Transaction ID)
Setting
This setting modifies Requestor Transaction IDs, which are QPI resources. This
option is set to
Disabled
by default.
NOTE: Enabling this option may results in negative impacts to overall system
performance.
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 field provides an interface 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 require high utilization of sequential
memory access. This option is set to
Enabled
by default. You can disable this
option for applications that require 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 manage the operating system’s capability to put logical processors
in the idling state in order to reduce power consumptions. This option is related to
Power Capping, and should only be enabled if the operating system supports it. 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
transition into a lower power idle state. This option 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 amount of power the cooling system is required 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
Displays the maximum core frequency of the processor.
Processor Bus
Speed
Displays the bus speed of the processor.
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