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3-7
BIOS Setup
the processor to the voltage regulator before entering Halt Powerdown State
(C1). Not all porcessors support Enhanced Halt Powerdown State (C1E).
Hardware Prefetcher
The processor has a hardware prefetcher that automatically analyzes its re-
quirements and prefetches data and instructions from the memory into the
Level 2 cache that are likely to be required in the near future. This reduces the
latency associated with memory reads. When enabled, the processor's hard-
ware prefetcher will be enabled and allowed to automatically prefetch data and
code for the processor. When disabled, the processor's hardware prefetcher
will be disabled.
Adjacent Cache Line Prefetch
The processor has a hardware adjacent cache line prefetch mechanism that
automatically fetches an extra 64-byte cache line whenever the processor
requests for a 64-byte cache line. This reduces cache latency by making the
next cache line immediately available if the processor requires it as well. When
enabled, the processor will retrieve the currently requested cache line, as well
as the subsequent cache line. When disabled, the processor will only retrieve
the currently requested cache line.
Intel(R) Virtualization Tech
Virtualization enhanced by Intel Virtualization Technology will allow a platform
to run multiple operating systems and applications in independent partitions.
With virtualization, one computer system can function as multiple
“
virtual
”
systems.
Execute-Disable Bit Capability
Intel's Execute Disable Bit functionality can prevent certain classes of malicious
"buffer overflow" attacks when combined with a supporting operating system.
This functionality allows the processor to classify areas in memory by where
application code can execute and where it cannot. W hen a malicious worm
attempts to insert code in the buffer, the processor disables code execution,
preventing damage or worm propagation.
Intel(R) HT Technology
The processor uses Hyper-Threading technology to increase transaction rates
and reduces end-user response times. The technology treats the two cores
inside the processor as two logical processors that can execute instructions
simultaneously. In this way, the system performance is highly improved. If you
disable the function, the processor will use only one core to execute the
instructions.
Please disable this item if your operating system doesn ’ t
support HT Function, or unreliability and instability may occur.
Intel(R) SpeedStep(tm) Tech
EIST (Enhanced Intel SpeedStep Technology) allows the system to dynamically
adjust processor voltage and core frequency, which can result in decreased
average power consumption and decreased average heat production.
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