Datasheet

Chapter 4: BIOS

4-15

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. The options

are Disabled and Enabled.

Hardware Prefetcher (Available when supported by the CPU.)

Set to this option to enabled to enable the hardware components that are used in

conjunction with software programs to prefetch data in order to shorten execution

cycles and maximize data processing efﬁ ciency. The options are Disabled and

Enabled.

Direct Cache Access (Available when supported by the CPU.)

Set to Enable to route inbound network IO trafﬁ c directly into processor caches

to reduce memory latency and improve network performance. The options are

Disabled and Enabled.

Intel <R> 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, 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.

Intel EIST Support (Available when supported by the CPU.)

Select Enabled to use the Enhanced Intel SpeedStep Technology and allows the

system to automatically adjust processor voltage and core frequency in an effort

to reduce power consumption and heat dissipation. The options are Enabled and

Disabled. Please refer to Intel’s web site for detailed information.

XI/O Device Conﬁ guration

Access the submenu to make changes to the following settings.

KBC Clock Input

This setting allows you to select clock frequency for the keyboard clock. The options

are 6MHz, 8MHz, 12MHz, and 16MHz.

Serial Port A

This setting allows you to decide how Serial Port A is controlled. The options are

Enabled (user deﬁ ned), Disabled, and Auto (BIOS- or OS- controlled).