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Option
Description
CPU
Enables you to govern the frequency of the communication links among the CPUs in the system.
Interconnect
Speed
The options available are Maximum data rate, 10.4 GT/s, and 9.6 GT/s. This option is set to Maximum
data rate by default.
Maximum data rate indicates that the BIOS runs the communication links at the maximum frequency
supported by the processors. You can also select specific frequencies that the processors support, which
can vary.
For best performance, you should select Maximum data rate. Any reduction in the communication
link frequency affects the performance of non-local memory accesses and cache coherency traffic. In
addition, it can slow access to non-local I/O devices from a particular CPU.
However, if power saving considerations outweigh performance, you might want to reduce the frequency
of the CPU communication links. If you do this, you should localize memory and I/O accesses to the
nearest NUMA node to minimize the impact to system performance.
Virtualization
Enables you to control the QuickPath Interconnect data rate settings.
Technology
Adjacent Cache
Optimizes the system for applications that need high utilization of sequential memory access. This option
Line Prefetch
is set to 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
Prefetcher
default.
DCU IP
Enables or disables the Data Cache Unit (DCU) IP prefetcher. This option is set to Enabled by default.
Prefetcher
Sub NUMA
Enables or disables the Sub NUMA Cluster. This option is set to Disabled by default.
Cluster
Logical Processor
Enables you to improve the energy efficiency of a system. It uses the operating system core parking
Idling
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.
X2APIC Mode
Enables or disables the X2APIC mode. This option is set to Disabled by default.
Dell Controlled
Controls the turbo engagement. Enable this option only when System Profile is set to Disabled.
Turbo
Number of Cores
Controls the number of enabled cores in each processor. This option is set to All by default.
per Processor
Processor Core
Specifies the maximum core frequency of the processor.
Speed
Processor n
The following settings are displayed for each processor installed in the system:
Option
Family-Model-
Stepping
Brand
Level 2 Cache
Level 3 Cache
Number of Cores Specifies the number of cores per processor.
NOTE:
The standard and basic bin processors support lower link frequencies.
NOTE:
Depending on the number of processors, there might be up to four processors listed.
Description
Specifies the family, model, and stepping of the processor as defined by Intel.
Specifies the brand name.
Specifies the total L2 cache.
Specifies the total L3 cache.
Pre-operating system management applications
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