Advantech AIIS-3400 User Manual page 47

3.2.2.9 CPU Configuration

Active Processor Core
Use this item to select the number of processor cores you want to activate when
you are using a dual or quad core processor.

Intel® Virtualization Technology
This feature is used to Enable or Disable the Intel® Virtualization Technology
(IVT) extension. It allows multiple operating systems to run simultaneously on
the same system by creating virtual machines, each running its own x86 operat-
ing system.

Hardware Prefetcher
Hardware Prefetcher is a technique that fetches instructions and/or data from
memory into the CPU cache memory well before the CPU needs it to improve
the load-to-use latency. You may choose to Enable or Disable it.

Adjacent Cache Line Prefetch
The Adjacent Cache-Line Prefetch mechanism, like automatic hardware
prefetch, operates without programmer intervention. When it is enabled through
the BIOS, two 64-byte cache lines are fetched into a 128-byte sector, regardless
of whether the additional cache line has been requested or not. You may choose
to Enable or Disable it.

CPU AES
Enable or Disable CPA advanced encryption standard instruction.

Boot Performance
Select the performance state that the BIOS will set before OS handoff.

Intel® Speedstep™
Allows more than two frequency ranges to be supported.
Figure 3.13 CPU Configuration
35 AIIS-3400/3410 User Manual