Supermicro X7SLM+ User Manual page 60

X7SLM/X7SLM+ User's Manual
Ratio CMOS Setting
This option allows the user to set the ratio between the CPU Core Clock and the
FSB Frequency. (Note: if an invalid ratio is entered, the AMI BIOS will restore the
setting to the previous state.)
Hyper-Threading (Available when supported by the CPU)
Set to Enabled to use the Hyper-Threading Technology, which will result in increased
CPU performance. The options are Disabled and Enabled.
Single-Logical Processor Mode (Available when supported by the CPU)
When set to Enabled, only one CPU thread/core will be enabled when a multi-core
processor is installed in the system. The options are Enabled and Disabled.
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 in the forward or backward manner to
improve CPU performance. The options are Disabled and Enabled.
Adjacent Cache Line Prefetch (Available when supported by the CPU)
The CPU fetches the cache line for 64 bytes if this option is set to Disabled.
The CPU fetches both cache lines for 128 bytes as comprised if Enabled.
Max CPUID Value Limit
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.).
Intel ® Virtualization Technology (Available when supported by the CPU)
Select Enabled to use the feature of 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.
Execute-Disable Bit Compatibly (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 flooding illegal codes
to overwhelm the processor or damage the system during an attack. The default is
Enabled. (Refer to Intel and Microsoft Web Sites for more information.)
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