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50 Using the System Setup Program
CPU Information Screen
Table 2-4 lists the options and descriptions for the information fields that
appear on the CPU Information screen.
Snoop Filter (Disabled
default)
Enables or disables the snoop filter option.
Low Power Mode
(Disabled default)
Enables or disables the low power mode of the memory.
When set to Disabled, the memory runs at full speed.
When set to Enabled, the memory runs at a reduced
speed to conserve energy.
NOTE: On some systems and memory combinations,
changing the value from Enabled to Disabled requires a
cold reboot.
Table 2-4. CPU Information Screen
Option Description
Bus Speed Displays the bus speed of the processors.
Logical Processor
(Enabled default)
Displays when the processors support HyperThreading.
Enabled permits all logical processors to be used by the
operating system. Only the first logical processor of each
processor installed in the system is used by the operating
system if Disabled is selected.
Adjacent Cache Line
Prefetch
(Enabled default)
Enables or disables optimal use of sequential memory
access. Disable this option for applications that require high
use of random memory access.
Virtualization
Technology
(Disabled default)
Displays when the processor(s) support Virtualization
Technology. Enabled permits virtualization software to
utilize Virtualization Technology functions incorporated in
the processor design. This feature can only be used by
software that supports Virtualization Technology.
Hardware Prefetcher
(Enabled default)
Enables or disables the hardware prefetcher.
Table 2-3. Memory Information Screen (continued)
Option Description
Book.book Page 50 Monday, September 14, 2009 12:57 PM