User`s manual

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X8DTU/X8DTU-F User’s Manual

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 prefetches 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.

L1 Data Prefetch (Available when supported by the CPU)

Select Enabled to enable Level 1 data prefetch support to enhance system perfor-

mance for UP platforms. For DP/MP servers, use this feature to enhance system

performance based on the speciﬁ cation of the application running in the system at

the time. The options are Disabled and Enabled.

Data Reuse Optimization (Available when supported by the CPU)

For UP platforms, select Enabled to maximize data reuse support to enhance

system performance. For DP/MP servers, enable or disable this feature based on

application speciﬁ cations. The options are Enabled and Disable

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 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 Capability (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 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.)