Hitachi Compute Blade 500 Series - Page 118

Processors sub menu
Select an item to display or set, and press Enter.
The following table shows description of menu items displayed in the left side
of the window.
Select an item to display or set, and press Enter.
Table 2-84 Processors menu items
Menu items
Selection
1
Description
Turbo Mode • Disable
• <<Enable>>
Sets a CPU Turbo Mode, which is
enabled after the reboot.
Shown only when supported by
installed CPUs.
Processor Performance
States
2
•
Disable
• <<Enable>>
Sets CPU EIST, which is enabled
after the reboot.
C-States • Disable
• <<Enable>>
Sets a CPU power saving mode,
which is enabled after the reboot.
Package ACPI C-State
Limit
2
• ACPI C2
• <<ACPI C3>>
Sets a C-State upper limit in the
CPU idle mode.
Not displayed when C-States is
disabled.
C1 Enhanced Mode
2
• Disable
• <<Enable>>
Sets CPU Enhanced C1E State,
which is enabled after the reboot.
Hyper-Threading • <<Enable>>
• Disable
Sets CPU Hyper Threading.
Shown only when supported by
installed CPUs.
Execute Disable Bit • Disable
• <<Enable>>
With "Disable", the response is
always "0" for XD feature flag.
Intel Virtualization
Technology
2
• Disable
• <<Enable>>
Sets Vanderpool Technology,
which is Intel's new virtualization
technology.
Enable SMX
2
• <<Disable>>
• Enable
Sets the safe mode.
Hardware Prefetcher • <<Enable>>
• Disable
Sets Hardware Prefetcher.
Adjacent Cache
Prefetcher
※2
• <<Enable>>
• Disable
Sets Adjacent Cache Prefetcher.
DCU Streamer
Prefetcher
※2
• <<Enable>>
• Disable
Sets DCU Streamer Prefetcher.
DCU IP Prefetcher
※2
• <<Enable>>
• Disable
Sets DCU IP Prefetcher.
2-98
UEFI setup menu
Hitachi Compute Blade 500 Series EFI User's Guide