Chapter 4: AMI BIOS
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Hardware Prefetcher (Available when supported by the CPU)
If enabled, the hardware prefetcher will prefetch streams of data and instructions
from the main memory to the L2 cache in the forward or backward manner to im-
prove CPU performance. The options are Disabled and Enabled.
Adjacent Cache Line Prefetch (Available when supported by the CPU)
The CPU prefetches the cache line for 64 bytes if this option is set to Disabled.
The CPU prefetches both cache lines for 128 bytes as comprised if this item is set
to Enabled. The options are Disabled and Enabled.
DCU Prefetcher (Available when supported by the CPU)
Select Enabled to activate Level 1 Data Prefetcher to enhance system performance.
For DP servers, enable or disable this feature based on application specifi cations.
The options are Enabled and Disabled.
Data Reuse Optimization (Available when supported by the CPU)
Select Enabled to maximize Data Reuse support to enhance system performance
for DP platforms. For DP servers, enable or disable this feature based on applica-
tion specifi cations. The options are Enabled and Disabled.
MPS and ACPI MADT Ordering
This feature allows the user to confi gure the MPS (Multi-Processor Specifi cation)
and ACPI settings for your motherboard. Select Modern Ordering if the XP or a
newer version of Windows OS is used in the motherboard. Select Legacy Ordering
if the 2000 or an earlier version of Windows OS is used. The options are Modern
Ordering and Legacy Ordering.
Intel® Virtualization Technology (Available when supported by the CPU)
Select Enabled to enable Virtualization Technology support and allows one plat-
form to run multiple operating systems and applications in independent partitions,
creating 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 Capability (Available if supported by the OS and the
CPU)
Select Enabled to enable Execute_Disable_Bit support which will allow the proces-
sor 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 fl ooding 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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