Dell DSS 1500 Owner's Manual page 24

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 This setting modifies Requestor Transaction IDs, which are QPI resources. This
(Requestor option is set to Disabled by default.
Transaction ID)
Setting
Virtualization Enables or disables the additional hardware capabilities provided for virtualization.
Technology This option is set to Enabled by default.
Address Defines the Address Translation Cache (ATC) for devices to cache the DMA
Translation transactions. This field provides an interface to a chipset's Address Translation and
Service (ATS) Protection Table to translate DMA addresses to host addresses. This option is set to
Enabled by default.
Adjacent Cache Optimizes the system for applications that require high utilization of sequential
Line Prefetch 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 Enables or disables the hardware prefetcher. This option is set to Enabled by
Prefetcher default.
DCU Streamer Enables or disables the Data Cache Unit (DCU) streamer prefetcher. This option is
Prefetcher 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 Enables you to manage the operating system's capability to put logical processors
Idling 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.
X2Apic Mode Enables or disables the X2Apic mode.
Number of Cores Controls the number of enabled cores in each processor. This option is set to All
per Processor by default.
Processor 64-bit Specifies if the processor(s) support 64-bit extensions.
Support
Processor Core Displays the maximum core frequency of the processor.
Speed
Processor Bus Displays the bus speed of the processor.
Speed
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NOTE: Enabling this option may results in negative impacts to overall system
performance.
NOTE: This option is only available on certain stock keeping units (SKUs) of the
processors.