Advantech AIMB-502, User Manual

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33 AIMB-502 User Manual
Chapter 3
B
IOS Operation
 Hyper-threading [ Enabled ]
Enabled for Windows XP and Linux (OS optimized for Hyper-Threading Tech-
nology ) and Disable for other OS which are not optimized for HT Technology.
When disabled, only one thread per core is enabled.
 Active Processor Cores [ All ]
Allows you to choose the number of CPU cores to activate in each processor
package.

Limit CPUID Maximum [ Disabled ]
This item allows you to limit CPUID maximum value.
[Enabled] Allow legacy operating systems to boot even without support for
CPUs with extended CPUID functions.
 Execute Disable Bit [ Enabled ]
This item allows you to enable or disable the No-Execution page protection
technology.

Intel Virtualization Technology [ Disabled ]
Intel Virtualization Technology (Intel VT) is a set of hardware enhancements to
Intel server and client platforms that provide software-based virtualization solu-
tions.
Intel VT allows a platform to run multiple operating systems and applications in
independent partitions, allowing one computer system to function as multiple vir-
tual systems.
 Hardware Prefetch [ Enabled ]
The processor fetches data and instructions from the memory into the cache
that is likely to be required in the near future. This reduces the latency associ-
ated with memory reads.
 Adjacent Cache Line Prefetch [ Enabled ]
This item allows users to enable or disable the adjacent cache line prefetch fea-
ture.