Themis RES-XR4-3U, Installation Manual

Page: 96 / 184

3-8
Themis Computer
RES-XR4-3U Installation Manual Version 1.3
64-bit
This item indicates if the CPU installed in Socket 1 or 2 supports 64-bit technology.
Clock Spread Spectrum
Select Enable to use the feature of Clock Spectrum, which will allow the BIOS to
monitor and attempt to reduce the level of Electromagnetic Interference caused by
the components whenever needed. The options are
Disabled (default) and Enabled.
RTID (Record Types IDs) (X9DBL)
This feature displays the total number of Record Type IDs for local and remote
pools. The options are
Optimal and Alternate.
Hyper-threading
Select Enabled to support Intel Hyper-threading Technology to enhance CPU perfor-
mance. The options are
Enabled and Disabled.
Active Processor Cores
Set to Enabled to use a processor's second core and above. (Please refer to Intel's
website for more information.) The options are
All , 1, and 2.
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 if supported by the OS & the
CPU)
Select 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.)