Hitachi Compute Blade 500 Series - Page 28

Table 2-7 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
•
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
• ACPI C2
• <<ACPI C3>>
Sets a C-State upper limit during
the CPU idle mode.
C1 Enhanced Mode • Disable
• <<Enable>>
Sets CPU Enhanced C1E State,
which is enabled after the reboot.
Hyper-Threading • Disable
• <<Enable>>
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
• Disable
• <<Enable>>
Sets Vanderpool Technology, which
is Intel's new virtualization
technology.
Hardware Prefetcher • Disable
• <<Enable>>
Sets Hardware Prefetcher.
Adjacent Cache
Prefetch
• Disable
• <<Enable>>
Sets Adjacent Cache Prefetch.
DCU Streamer
Prefetcher
• Disable
• <<Enable>>
Sets DCU Streamer Prefetcher.
DCU IP Prefetcher • Disable
• <<Enable>>
Sets DCU IP Prefetcher.
Cores in CPU
Package
• <<All>>
• 1-7
Sets the number of running cores in
the CPU package.
Not shown with the server blade
firmware version 01-59 or later.
QPI Link Frequency • Minimal Power
• Balanced
• <<Max Performance>>
Sets the number of clock
frequencies in Quick Path
Interconnect (QPI) Link.
Note:
1. A value in double angle brackets, << >>, shows the default.
2-8
UEFI setup menu
Hitachi Compute Blade 500 Series EFI User's Guide