Chapter 4: AMI BIOS
4-5
EUP Support
Enable this feature for EuP support to meet Eco-design requirements for energy-
effi cient products. Disable this feature to supply standby power and allow the ma-
chine to "wake-up" in the S5 state. The options are Enabled
and
Disabled
.
Processor and Clock Options
This submenu allows the user to confi gure the Processor and Clock settings.
Clock Spread Spectrum
Select Enable to use the feature of Clock Spectrum, which will allow the 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 pre fetcher will pre fetch 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 fetches 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 Prefetcher (Available when supported by the CPU)
Select Enabled to activate L1 Data Prefetcher to enhance system performance for
UP platforms. For DP/MP servers, enable or disable this feature based on applica-
tion 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 UP platforms. For DP/MP servers, enable or disable this feature based on ap-
plication 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 Select Modern Ordering if XP or a newer
version of the Windows OS is used in the motherboard.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 the feature of Virtualization Technology to allow one platform
to run multiple operating systems and applications in independent partitions, creat-
