Dell DSS 2500 Owner's Manual page 42

Viewing Processor Settings
To view the Processor Settings screen, perform the following steps:
1 Turn on, or restart your system.
2 Press F2 immediately after you see the following message:
F2 = System Setup
NOTE: If your operating system begins to load before you press F2, wait for the system to finish booting, and then restart
your system and try again.
3 On the System Setup Main Menu screen, click System BIOS.
4 On the System BIOS screen, click Processor Settings.
Related links
Processor Settings
Processor Settings details
Processor Settings details
The Processor Settings screen details are explained as follows:
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 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 Translation Defines the Address Translation Cache (ATC) for devices to cache the DMA transactions. This option provides an
Service (ATS) 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 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.
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.
42 Pre-operating system management applications
NOTE: Enabling this option may negatively impact the overall system performance.