User`s manual

English
30
 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] 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.
[Disabled] Use the actual maximum CPUID input value.
 Execute Disable Bit [Enabled]
Intel’s Execute Disable Bit functionality can prevent certain classes of malicious

system. It is recommended that keeps this item enabled always.
[Enabled] Enables NO-Execution protection to prevent the malicious
attacks and worms.
[Disabled] Disables this function.
 Intel Virtualization Tech [Enabled]
Enables or disables Intel Virtualization technology.
[Enabled] Enables Intel Virtualization technology and allows a platform
to run multiple operating systems in independent partitions.
The system can function as multiple systems virtually.
[Disabled] Disables this function.
 Hardware Prefetcher [Enabled]
Enables or disables the hardware prefetcher (MLC Streamer prefetcher).
[Enabled] Allows the hardware prefetcher to automatically pre-fetch
data and instructions into L2 cache from memory for tuning
the CPU performance.
[Disabled] Disables the hardware prefetcher.
 Adjacent Cache Line Prefetch [Enabled]
Enables or disables the CPU hardware prefetcher (MLC Spatial prefetcher).
[Enabled] Enables adjacent cache line prefetching for reducing the

application.
[Disabled] Enables the requested cache line only.
 CPU AES Instructions [Enabled]
Enables or disables the CPU AES (Advanced Encryption Standard-New
Instructions) support. This item appears when a CPU supports this function.
[Enabled] Enables Intel AES support.
[Disabled] Disables Intel AES support.