MSI H81M-P33 Series User Manual page 20

your overclocked processor to lock up.
▶ CPU Features
Press <Enter> to enter the sub-menu.
▶ Hyper-Threading Technology [Enabled]
The processor uses Hyper-Threading technology to increase transaction rates
and reduces end-user response times. Intel Hyper-Threading technology treats
the multi cores inside the processor as multi logical processors that can execute
instructions simultaneously. In this way, the system performance is highly
improved.
[Enable]
[Disabled]
▶ Active Processor Cores [All]
This item allows you to select the number of active processor cores.
▶ Limit CPUID Maximum [Disabled]
Enables or disables the extended CPUID value.
[Enabled]
[Disabled]
▶ Execute Disable Bit [Enabled]
Intel's Execute Disable Bit functionality can prevent certain classes of malicious
"buffer overflow" attacks where worms attempt to execute code to damage the
system. It is recommended that keeps this item enabled always.
[Enabled]
[Disabled]
▶ Intel Virtualization Tech [Enabled]
Enables or disables Intel Virtualization technology.
[Enabled]
[Disabled]
▶ Hardware Prefetcher [Enabled]
Enables or disables the hardware prefetcher (MLC Streamer prefetcher).
[Enabled]
[Disabled]
▶ Adjacent Cache Line Prefetch [Enabled]
Enables or disables the CPU hardware prefetcher (MLC Spatial prefetcher).
[Enabled]
Enables Intel Hyper-Threading technology.
Disables this item if the system does not support HT function.
BIOS will limit the maximum CPUID input value to circumvent
boot problems with older operating system that do not support
the processor with extended CPUID value.
Use the actual maximum CPUID input value.
Enables NO-Execution protection to prevent the malicious
attacks and worms.
Disables this function.
Enables Intel Virtualization technology and allows a platform
to run multiple operating systems in independent partitions.
The system can function as multiple systems virtually.
Disables this function.
Allows the hardware prefetcher to automatically pre-fetch
data and instructions into L2 cache from memory for tuning
the CPU performance.
Disables the hardware prefetcher.
Enables adjacent cache line prefetching for reducing the
cache latency time and tuning the performance to the specific
application.
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