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C7B75 User’s Manual
CPU Information
This submenu displays information regarding the installed CPU.
Active Processor Cores
Enables selection of the number of the processor's core to activate. (Please refer
to Intel's web site for more information.) The options are All, 1, 2, and 3.
Limit CPUID Maximum
This feature allows the user to set the maximum CPU ID value. Enable this function
to boot the legacy operating systems that cannot support processors with extended
CPUID functions. The options are Enabled and Disabled (for the Windows OS).
Execute-Disable Bit (Available when supported by the OS and the CPU)
Set to Enabled to enable the Execute Disable Bit which will allow the processor
to designate areas in the system memory where an application code can execute
and where it cannot, thus preventing a worm or a virus from ooding illegal codes
to overwhelm the processor or damage the system during an attack. The default is
Disabled. (Refer to Intel and Microsoft Web Sites for more information.)
Intel® Virtualization Technology (Available when supported by the CPU)
Select Enabled to use the Intel Virtualization Technology to allow one platform to
run multiple operating systems and applications in independent partitions, creat-
ing multiple "virtual" systems in one physical computer. The options are Enabled
and Disabled.
Note: If there is any change to this setting, you will need to power off and
restart the system for the change to take effect. Please refer to Intel’s
web site for detailed information.
Hardware Prefetcher (Available when supported by the CPU)
If set to Enabled, the hardware prefetcher will prefetch streams of data and instruc-
tions from the main memory to the L2 cache to improve CPU performance. The
options are Disabled and Enabled.
Adjacent Cache Line Prefetch (Available when supported by the CPU)
Select Enabled for the CPU to prefetch both cache lines for 128 bytes as comprised.
Select Disabled for the CPU to prefetch both cache lines for 64 bytes. The options
are Disabled and Enabled.
Clock Spread Spectrum