User`s manual

4-6

X8DAH+/X8DAH+-F User’s Manual

Processor and Clock Options

This submenu allows the user to conﬁ gure the Processor and Clock settings.

Clock Spread Spectrum

Select Enable to use Clock Spectrum, which will allow BIOS to monitor and attempt

to reduce the level of Electromagnetic Interference caused by the components

whenever needed. The options are Disabled and Enabled.

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 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 prefetches both cache lines for 128 bytes as comprised if Enabled.

L1 Data Prefetcher (Available when supported by the CPU)

Select Enabled to activate L1 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 cations)

and ACPI settings for the motherboard. Select Modern Ordering if XP or a newer

version of the Windows OS is used in the motherboard. Select Legacy Ordering

if 2000 or an earlier version of the 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 Intel Virtualization Technology which will 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

website for detailed information.