User's and BIOS Manual (1.2)

4-14

X7DB3 User's Manual

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 Prefetch (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

Select Enabled to improve overall I/O network performance. The options are

Enabled and Disabled. When this item is set to Enabled, the following item will

display.

DCA Delay Clocks

A DCA Prefetch is used with TOE components to prefetch data in order to

shorten execution cycles and maximize data processing efﬁ ciency. Prefetching

too frequently can saturate the cache directory and delay necessary cache ac-

cesses. This feature reduces or increases the frequency the system prefetches

data. The options are [8], [16], [32], [40], [48], [56], [64], [72], [80], [88], [96],

[104], [112], [120]

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 allow 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.

I/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 KBC. The options are 6MHz,

8MHz, 12MHz, and 16MHz.