MSI Z170A PC MATE User Manual - Page 53

Adjacent Cache Line Prefetch [Enabled], Intel VT-D Tech [Enabled]

Page 53 highlights

▶▶Limit CPUID Maximum [Disabled] Enables or disables the extended CPUID value. [Enabled] BIOS limits 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 buffer overflow attacks where worms attempt to execute code to damage the 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. ▶▶Intel VT-D Tech [Enabled] Enables or disables Intel VT-D (Intel Virtualization for Directed I/O) technology. ▶▶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 cache latency time and tuning the performance to the specific 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. BIOS Setup 53

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53
BIOS Setup
Limit CPUID Maximum [Disabled]
Enables or disables the extended CPUID value.
[Enabled]
BIOS limits 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
buffer overflow
attacks where worms attempt to execute code to damage the
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.
Intel VT-D Tech [Enabled]
Enables or disables Intel VT-D (Intel Virtualization for Directed I/O) technology.
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 cache
latency time and tuning the performance to the specific 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.