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Chapter 2
Installation and BIOS Setup
Hardware Prefetcher (Available Subject to CPU Support)
If set to
Enabled
, the hardware prefetcher prefetches streams of data and instructions 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 Subject to CPU Support)
The CPU fetches the cache line for 64 bytes if you set this option to
Disabled
. If you set this
option to Enabled, the CPU fetches both cache lines for 128 bytes as comprised.
MPS and ACPI MADT Ordering
Use this option to choose the ordering method for the Multiple ACPI Description Table
(MADT). Select
Modern Ordering
for Windows XP or later. Select
Legacy Ordering
for
Microsoft Windows 2000 or earlier. The options are
Modern Ordering
and
Legacy Ordering
.
Intel Virtualization Technology (Available Subject to CPU Support)
Select
Enabled
to use the virtualization technology feature to allow one platform to run multiple
OSs and applications in independent partitions, creating multiple “virtual” systems in one
physical computer. The options are
Enabled
and
Disabled
.
Note
If you change to this setting, you must power off and restart the system for the
change to take effect. Refer to
www.intel.com/technology/
virtualization
for detailed information.
Execute Disable Bit Capability (Available Subject to OS and CPU Support)
Set to
Enabled
to enable the Execute Disable Bit, which allows the processor to designate areas
in the system memory where application code can execute and where it cannot, thus preventing
a worm or virus from flooding illegal codes to overwhelm the processor or damage the system
during an attack. The default is
Enabled
. (Refer to the Intel and Microsoft Web sites for more
information.)
Simultaneous Multithreading (Available Subject to CPU Support)
Set to
Enabled
to use hyperthreading technology for increased CPU performance. The options
are
Disabled
and
Enabled
.
Active Processor Cores
Set to
Enabled
to use a processor’s second core and beyond. (Refer to the Intel Web site for
more information.) The options are
All
,
1
,
2
,
3
, and
4
.
Intel EIST Technology
With Enhanced Intel SpeedStep Technology (EIST), the system can adjust processor voltage and
core frequency automatically to reduce power consumption and heat dissipation. Refer to the
Intel Web site for detailed information. The options are
Disabled
and
Enabled
.
