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Option
Adjacent Cache Line Prefetch
Hardware Prefetcher
DCU Streamer Prefetcher
DCU IP Prefetcher
Sub NUMA Cluster
MADT Core Enumeration
UPI Prefetch
XPT Prefetch
LLC Prefetch
Dead Line LLC Alloc
Directory AtoS
Logical Processor Idling
AVX P1
Intel SST-CP
x2APIC Mode
AVX ICCP Pre-Grant License
Dell Controlled Turbo
Dell Controlled Turbo Settings
18
Pre-operating system management applications
Description
Enables (default) or disables the optimization of the system for applications that
need high use of sequential memory access. You can disable this option for
applications that need high use of random memory access.
Enables (default) or disables the hardware prefetcher.
Enables (default) or disables the Data Cache Unit (DCU) streamer prefetcher.
Enables (default) or disables the DCU IP prefetcher.
Enables or disables (default) the Sub NUMA Cluster.
Specifies the MADT Core Enumeration. This option is set to default in Round
Robin. Linear option supports industry core enumeration whereas, Round Robin
option supports Dell optimized core enumeration.
Enables you to get the memory read started early on DDR bus. The Ultra Path
Interconnect (UPI) Rx path spawns the speculative memory that is read to
Integrated Memory Controller (iMC) directly. This option is set to Disabled by
default.
This option is set to Enabled by default.
Enables or disables the LLC Prefetch on all threads. This option is set to Enabled
by default.
Enables or disables the Dead Line LLC Alloc. This option is set to Enabled by
default. You can enable this option to enter the dead lines in LLC or disable the
option to not enter the dead lines in LLC.
Enables or disables the Directory AtoS. AtoS optimization reduces remote read
latencies for repeat read accesses without intervening writes. This option is set
to Disabled by default.
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.
NOTE:
This feature is not supported if CPU Power Management is set to
Maximum Performance.
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 must dissipate. This option
is set to Normal by default.
NOTE:
This option is only available on certain SKUs of the processors.
Enables Intel SST-CP. This option is displayed if Performance Per Watt
(operating system) or Custom (when OSPM is enabled) system profiles are
selected. This option is displayed and selectable for each system profile mode.
This option is set to Disabled by default.
Enables or disables x2APIC mode. This option is set to Enabled by default.
NOTE:
For two processors 64 cores configuration, x2APIC mode is not
switchable if 256 threads are enabled (BIOS settings: All CCD, cores, and
logical processors enabled).
Enables or disables AVX ICCP Pre-Grant License. This option is set to Disabled
by default.
Controls the turbo engagement. Enable this option only when System Profile
is set to Performance or Custom, and CPU Power Management is set to
Performance. This item can be selected for each system profile mode. This
option is set to Disabled by default.
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