Supermicro H11SSL-I/C/NC User Manual page 65

Chapter 4: BIOS (for EPYC 7001 Series)
CPU Configuration

SMT Mode
Use this setting to specify Simultaneous Multithreading. Options include Off for 1T single
thread and Auto for 2T two-thread if your system is capable of it.
Core Performance Boost
This setting is used to configure for Core Performance Boost. Options include Auto and
Disabled.
Global C-state Control
This setting is used to configure for Global C-state Control. Options include Auto, Disabled
and Enabled.
Downcore Control
This sets the number of cores to be used by your system. Once this option has been used to
remove any cores, a power cycle is required in order for the future selections to take effect.
Options include TWO (1+1), Two (2 + 0), Three (3 + 0), Four (2 + 2), Four (4+0), Six (3 + 3)
and Auto. If unsure, leave this to Auto.
L1 Stream HW Prefetcher
This feature sets the option to enable or disable the L1 Stream Prefetcher. The options are
Disable, Enable and Auto. If unsure, leave this to Auto.
L2 Stream HW Prefetcher
This feature sets the option to enable or disable the L2 Stream Prefetcher. The options are
Disable, Enable and Auto. If unsure, leave this to Auto.
SVM Mode
This feature sets the option to enable or disable CPU Virtualization. The options are Disabled,
Enabled.
SMEE
This feature sets the option to enable or disable Secure Memory Encryption. The options are
Disabled, Enabled.
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