User`s manual

- 45 - BIOS Setup
(Note) This item is present only if you install a CPU that supports this feature. For more information about
Intel CPUs' unique features, please visit Intel's website.
Active Processor Cores
(Note)
Allows you to determine whether to enable all CPU cores.
Options available: All/1/2/3. Default setting is All.
Overclocking lock
Enable/Disable Overclocking lock.
Options available: Enabled/Disabled. Default setting is Disabled.
Limit CPUID Maximum
When enabled, the processor will limit the maximum COUID input values to 03h when queried, even if
the processor suppports a higher CPUID input value.
When disabled, the processor will return the actual maximum CPUID input value of the processor when
queried.
Options available: Enabled/Disabled. Default setting is Disabled.
Execute Disable Bit
When enabled, the processor prevents the execution of code in data-only memory pages. This provides
someprotectionagainstbufferoverowattacks.
When disabled, the processor will not restrict code execution in any memory area. This makes the
processormorevulnerabletobufferoverowattacks.
Options available: Enabled/Disabled. Default setting is Enabled.
Intel Virtualization Technology
Select whether to enable the Intel Virtualization Technology function. VT allows a single platform to run
multiple operating systems in independent partitions.
Options available: Enabled/Disabled. Default setting is Enabled.
Hardware Prefetcher
Select whether to enable the speculative prefetch unit of the processor.
Options available: Enabled/Disabled. Default setting is Enabled.
Adjacent Cache Line Prefetch
When enabled, cache lines are fetched in pairs. When disabled, only the required cache line is fetched.
Options available: Enabled/Disabled. Default setting is Enabled.
CPU AES
Enable/Disable CPU Advanced Encryption Standard instructions.
Options available: Enabled/Disabled. Default setting is Enabled.
Boot performance mode
ConguretheBootperformancemode.
Options available: Turbo Performance/Max Non-Turbo Performance/Max bettery/Turbo Performance.
Default setting is Turbo Performance.
EIST (Enhanced Intel SpeedStep Technology)
Conventional Intel SpeedStep Technology switches both voltage and frequency in tandem between high
and low levels in response to processor load.
Options available: Enabled/Disabled. Default setting is Enabled.