Dell HHB Owner's Manual page 38

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.
QPI Speed Enables you to control QuickPath Interconnect data rate settings.
Alternate RTID Modifies Requestor Transaction IDs, which are QPI resources. This option is set to Disabled by default.
(Requestor
Transaction ID)
Setting
Virtualization Enables or disables the additional hardware capabilities provided for virtualization. This option is set to Enabled by
Technology default.
Address Defines the Address Translation Cache (ATC) for devices to cache the DMA transactions. This option provides an
Translation interface between CPU and DMA Memory Management to a chipset's Address Translation and Protection Table
Service (ATS) to translate DMA addresses to host addresses. This option is set to Enabled by default.
Adjacent Cache Optimizes the system for applications that need high utilization of sequential memory access. This option is set to
Line Prefetch Enabled by default. You can disable this option for applications that need high utilization of random memory
access.
Hardware Enables or disables the hardware prefetcher. This option is set to Enabled by default.
Prefetcher
DCU Streamer Enables or disables the Data Cache Unit (DCU) streamer prefetcher. This option is set to Enabled by default.
Prefetcher
DCU IP Prefetcher Enables or disables the Data Cache Unit (DCU) IP prefetcher. This option is set to Enabled by default.
Execute Disable Enables you to run the disable memory protection technology. This option is set to Enabled by default.
Logical Processor Enables you to improve the energy efficiency of a system. It uses the operating system core parking algorithm and
Idling 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.
X2Apic Mode Enables or disables the X2Apic mode.
Dell Controlled Controls the turbo engagement. Enable this option only when System Profile is set to Performance.
Turbo
Number of Cores Controls the number of enabled cores in each processor. This option is set to All by default.
per Processor
Processor 64-bit Specifies if the processor(s) support 64-bit extensions.
Support
Processor Core Specifies the maximum core frequency of the processor.
Speed
Processor 1
The following settings are displayed for each processor installed in the system:
Option
Family-Model-
Stepping
Brand
Level 2 Cache
38 Pre-operating system management applications
NOTE: Enabling this option may negatively impact the overall system performance.
NOTE: This option is only available on certain stock keeping units (SKUs) of the processors.
NOTE: Depending on the number of installed CPUs, there may be up to four processor listings.
NOTE: Depending on the number of CPUs, there may be up to four processors listed.
Description
Specifies the family, model, and stepping of the processor as defined by Intel.
Specifies the brand name.
Specifies the total L2 cache.