Table 5. Processor Settings details (continued)
Option Description
● If the OS supports SME, do not enable this field.
● If the hypervisor supports SEV, do not enable this field.
Enabling
TSME affects the system memory performance.
Enhanced REP MOVSB/STOSB Enables or disables Enhanced REP MOVSB/STOSB support.
This setting can affect performance, depending on the
application running on the server. This option is set to
Disabled by default.
NOTE: This option is only available for the AMD EPYC
7003 processor.
Fast Short REP MOVSB Enables or disables Fast Short REP MOVSB support. This
setting can affect performance, depending on the application
running on the server. This option is set to Disabled by
default.
NOTE: This option is only available for the AMD EPYC
7003 processor.
REP-MOV/STOS Streaming Enables or disables REP MOVISTOS Streaming support. This
setting can affect performance, depending on the application
running on the server. This option is set to Disabled by
default.
NOTE: This option is only available for the AMD EPYC
7003 processor.
Configurable TDP Allows the reconfiguration of the processor Thermal Design
Power (TDP) levels based on the power and thermal delivery
capabilities of the system. TDP refers to the maximum amount
of power the cooling system is required to dissipate. This
option is set to Maximum by default.
NOTE: This option is only available on certain SKUs of the
processors, and the number of alternative levels varies as
well.
x2APIC Mode Enables or disables x2APIC mode. This option is set to
Enabled by default.
NOTE: For two CPU 64 cores configuration, x2APIC
mode is not switchable if 256 threads are enabled (BIOS
settings: All CCD, cores, and logical processors enabled).
Number of CCDs per Processor Controls the number of enabled CCDs in each processor. This
option is set to All by default.
Number of Cores per CCD Specifies the number of cores per CCD. This option is set to
All by default.
Processor Core Speed Specifies the maximum core frequency of the processor.
Processor n
NOTE: Depending on the number of CPUs, there might be
up to n processors listed.
The following settings are displayed for each processor that is
installed in the
system:
8 Pre-operating system management applications
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