Dell PowerEdge MX840c EMC PowerEdge MX840c Installation and Service Manual - Page 25

SATA Settings, x2APIC Mode

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Option IRQ Throttle Logical Processor Idling Description Enables you to throttle local requests that are targeting a remote address. 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. Configurable TDP Enables you to configure the TDP level. The available options are Nominal, Level 1 and Level 2. 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. This option is set to Enabled by default. L2 RFO Prefetch Enables or disables the L2 RFO (Read For Ownership) prefetch. This option is set to Enabled by default. The RFO is the process of reading a cache line from the memory into the cache before it can be written to. NOTE: This feature is supported only when four processors are installed. Dell Controlled Turbo Controls the turbo engagement. Enable this option only when System Profile is set to Performance. NOTE: Depending on the number of installed CPUs, there might be up to four processor listings. Dell AVX Scaling Enables you to configure the Dell AVX scaling technology. This option is set to 0 by default. Technology Number of Cores per Processor Controls the number of enabled cores in the processor. Under certain circumstances, you may see limited performance improvements to Intel Turbo Boost Technology and benefits from potentially larger shared caches, when you reduce the number of enabled cores. Most computing environments tend to benefit more from larger number of processing cores, so you must carefully weigh the disabling of cores to gain nominal performance enhancements. Process Core Speed Displays the core speed of the processor(s). Process Bus Speed Displays the bus speed of the processor(s). Processor n The following settings are displayed for each processor installed in the system: Option Description Family-ModelStepping Specifies the family, model, and stepping of the processor as defined by Intel. Brand Specifies the brand name. Level 2 Cache Specifies the total L2 cache. Level 3 Cache Specifies the total L3 cache. Number of Cores Specifies the number of cores per processor. Maximum Specifies the maximum memory capacity per processor. Memory Capacity Microcode Specifies the microcode. SATA Settings You can use the SATA Settings screen to view the SATA settings of SATA devices and enable SATA and PCIe NVMe RAID mode on your system. Pre-operating system management applications 25

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Option
Description
IRQ Throttle
Enables you to throttle local requests that are targeting a remote address.
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.
NOTE:
This feature is not supported if CPU Power Management is set to Maximum Performance.
Configurable TDP
Enables you to configure the TDP level. The available options are
Nominal
,
Level 1
and
Level 2
. 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. This option is set to
Enabled
by default.
L2 RFO Prefetch
Enables or disables the L2 RFO (Read For Ownership) prefetch. This option is set to
Enabled
by default.
The RFO is the process of reading a cache line from the memory into the cache before it can be written
to.
NOTE:
This feature is supported only when four processors are installed.
Dell Controlled
Turbo
Controls the turbo engagement. Enable this option only when
System Profile
is set to
Performance
.
NOTE:
Depending on the number of installed CPUs, there might be up to four processor listings.
Dell AVX Scaling
Technology
Enables you to configure the Dell AVX scaling technology. This option is set to
0
by default.
Number of Cores
per Processor
Controls the number of enabled cores in the processor. Under certain circumstances, you may see limited
performance improvements to Intel Turbo Boost Technology and benefits from potentially larger shared
caches, when you reduce the number of enabled cores. Most computing environments tend to benefit
more from larger number of processing cores, so you must carefully weigh the disabling of cores to gain
nominal performance enhancements.
Process Core
Speed
Displays the core speed of the processor(s).
Process Bus
Speed
Displays the bus speed of the processor(s).
Processor n
The following settings are displayed for each processor installed in the system:
Option
Description
Family-Model-
Stepping
Specifies the family, model, and stepping of the processor as defined by Intel.
Brand
Specifies the brand name.
Level 2 Cache
Specifies the total L2 cache.
Level 3 Cache
Specifies the total L3 cache.
Number of Cores
Specifies the number of cores per processor.
Maximum
Memory Capacity
Specifies the maximum memory capacity per processor.
Microcode
Specifies the microcode.
SATA Settings
You can use the
SATA Settings
screen to view the SATA settings of SATA devices and enable SATA and PCIe NVMe RAID
mode on your system.
Pre-operating system management applications
25