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FatTwin AS -F1114S-RNTR User's Manual
CPU Configuration
SMT Control
Used to enable or disable symmetric multithreading. To re-enable SMT, a power cycle is
needed after selecting the Auto option. Warning - S3 is not supported on systems where SMT
is disabled. The options include
Auto
and Disabled.
Core Performance Boost
Use to enable a core performance boost. The options include
Auto
and Disabled.
Global C-state Control
Controls I/O based C-state generation and DF C-states. The options include
Auto
, 2 CCDs,
3 CCDs, 4 CCDs, and 6 CCDs.
CCD Control
Sets the number of CCDs to be used. Once this option has been used to remove any CCDs,
a power cycle is required in order for future selections to take effect. The options include
xAPIC, x2APIC and
Auto
.
Core Control
Sets the number of cores to be used. Once this option has been used to remove any cores,
a power cycle is required in order for future selections to take effect. The options include
Auto,
TWO (1+1), FOUR (2+2), and SIX (3+3).
L1 Stream HW Prefetcher
Allows you to enable or disable the L1 Stream HW Prefetcher. The options include Disabled,
Enabled, and
Auto
.
L2 Stream HW Prefetcher
Allows you to enable or disable the L2 Stream HW Prefetcher. The options include Disabled,
Enabled, and
Auto
.
SEV ASID Count
Secure Encrypted Virtualization (SEV) Address Space IS (ASID) Count: This field specifies
the maximum valid ASID, which affects the maximum system physical address space. 16TB
of physical address space is available for systems that support 253 ASIDs, while 8TB of
physical address space is available for systems that support 509 ASIDs. The options include
253 ASIDs, 509 ASIDs and
Auto
.
SEV-ES ASID Space Limit Control
Controls the SEV-ES Space Limit. The options include
Auto
and Manual.
SVM Mode
Enables or disables CPU virtualization. The options are
Enabled
and Disabled.
