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CCD/Core/Thread Enhancement
This item allows you to set CCD/core/threads.
S3 is not supported on systems where cores/threads have been removed/disabled.
Prefetcher settings
L1 Stream HW Prefetcher [Auto]
This item allows you to enable or disable L1 Stream HW Prefetcher.
Configuration options: [Disable] [Enable] [Auto]
L2 Stream HW Prefetcher [Auto]
This item allows you to enable or disable L2 Stream HW Prefetcher.
Configuration options: [Disable] [Enable] [Auto]
Core Watchdog
Core Watchdog Timer Enable [Auto]
This item allows you to enable or disable CPU Watchdog Timer.
Configuration options: [Disable] [Enable] [Auto]
Core Performance Boost [Auto]
This option allows you to enable or disable CPB.
Configuration options: [Disabled] [Auto]
Global C-state Control [Auto]
This option allows you to control IO based C-state generation and DF C-states.
Configuration options: [Disabled] [Enabled] [Auto]
SEV ASID Count [Auto]
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.
Configuration options: [253 ASIDs] [509 ASIDs] [Auto]
SEV-ES ASID Space Limit Control [Auto]
Configuration options: [Auto] [Manual]
The following item appears only when SEV-ES ASID Space Limit Control is set to
[Manual].
SEV-ES ASID Space Limit [1]
SEV Vms using ASIDs below the SEV-ES ASID Space Limit must enable the SEV-ES
feature. ASIDs from SEV-ES ASID Space Limit to (SEV ASID Count + 1) can only be
used with SEV VMs. If this field is set to (SEV ASID Count + 1), all ASIDs are forced to
be SEV-ES ASIDs. Hence, the valid values for this field is 1 - (SEV ASID Count + 1).
Configuration options: [1] – [520]
Local APIC Mode [Auto]
Configuration options: [XAPIC] [X2APIC] [Auto]
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Chapter 5: BIOS Setup
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