Advantech SOM-6894, User Manual, Page: 27 / 84

19 SOM-6894 User Manual
Chapter 3
A
MI BIOS
3.2.2.3 CPU Configuration
Figure 3.6 CPU Configuration
 Hyper-threading
Enable for Windows XP and Linux (OS optimized for Hyper-Threading Technol-
ogy) and Disable for other OS (OS not optimized for Hyper-Threading Technol-
ogy) and Disable for other OS (OS not optimized for Hyper-Threading
Technology). When Disabled only one thread per core is enabled.
 Active Processor Cores
This item allows users to enable a number of cores in each processor package.

Limit CPUID Maximum
Disable for Windows XP.
 Execute Disable Bit
This item allows users to enable or disable Execute Disable Bit.
XD can prevent certain classes of malicious buffer overflow attacks when com-
bined with a supporting OS (Windows server 2003 SP1, Windows XP SP2
SuSE Linux 9.2, RedHat Enterprise 3 update 3.)

Intel Virtualization Technology
This item allows users to enable or disable Intel Virtualization Technology.
When enabled, a VMM can utilize the additional hardware capabilities provided
by Vanderpool Technology.

Hardware Prefetcher
This item allows users to enable or disable Hardware Prefetcher.
Enable the Mid Level Cache (L2) streamer prefetcher.
 Adjacent Cache Line Prefetch
This item allows users to enable or disable Adjacent Cache Line Prefetch.
Enable the Mid Level Cache (L2) prefetching of adjacent cache lines.