Dell E28S Series Owner's Manual page 69

Alternate RTID (Requestor Transaction ID) Setting
Modifies Requestor Transaction IDs, which are QPI resources. This option is set to Disabled by
default.
Note: Enabling this option may negatively impact the 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 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.
Execute Disable
Enables you to run the disable memory protection technology. 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.
Dell Controlled Turbo
Controls the turbo engagement. Enable this option only when System Profile is set to
Performance.
Pre-operating system management applications
Dell PowerEdge R430 Owner's Manual
69