Supermicro SBI-7126T-T1E, User Manual

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6-3
Chapter 6: BIOS
CPU & Clock Configuration
The menu options in the CPU C
ONFIGURATION
submenu and their descriptions are
shown in Table 6-1 .
Table 6-1. CPU Configuration Submenu
Menu Option Description
CPU Settings (Static)
This menu displays static information for Module Version, Manufacturer,
Frequency, BCLK Speed, Cache L1, Cache L2, Cache L3, Ratio Status and
Ratio Actual Value.
Ratio CMOS Setting
This setting sets the ratio between CPU Core Clock and the FSB Frequency. The
default is
20 .
Hardware Prefetcher
For UP platorms leave this setting enabled. For DP/MP servers, you can use this
setting to tune performance to the specific application.Settings are
Enabled and
Disabled.
Adjacent Cache Line
Prefetch
For UP platorms leave this setting enabled. For DP/MP servers, you can use this
setting to tune performance to the specific application.Settings are
Enabled and
Disabled.
Max CPUID Value
Limit
This setting is disabled for WindowsXP. Settings are Enabled and Disabled .
Intel (R) Virtualization
Tech
When enabled, a VMM can utilize the additional HW Caps that are provided by
Intel Virtualization Technology. Settings are
Enabled and Disabled.
NOTE: A full reset is required to change this setting.
Execute-Disable Bit
Capability When disabled, this setting forces the XD feature flag to always return to 0.
Settings are
Enabled and Disabled.
Intel (R) HT
Technology When Disabled, only one thread per enabled core is enabled. Settings are
Enabled and Disabled.
Active Processor
Cores This setting specifies the number of cores in each processor package to activate.
Settings are
All , 1 or 2.
A20M
Legacy OSes and APs may need A20M enabled. Settings are Enabled and
Disabled .
Intel SpeedStep(tm)
tech
Use this setting to enable or disable GV3. Settings are Enabled and Disabled.
Intel (R) TurboMode
Tech Turbo mode allows the processor cores to run faster than their marked frequency
in specific conditions. Settings are
Enabled and Disabled.
Intel (R) C-State tech
When enabled, the CPU idle is set to C2/C3/C4. Settings are Enabled and
Disabled.
C3 State
Use this setting to select the Nehalem C-state action. Settings are Disabled,
ACPI C2 and ACPI C3.
C6 State
Use this setting to enable or disable the Nehalem C6 state action. Settings are
Enabled and Disabled.
C State Package
Limit Setting Use this setting to select the option that will program into C State the package
limit register. Settings include
Auto , C1, C3, C6 and C7.