MSI X99A Présentation Rapide page 61

fActive Processor Cores Control [Disabled]
Allows you to select the number of active CPU cores.
fLimit 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.
fExecute 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.
fIntel 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.
fIntel VT-D Tech [Enabled]
Enables or disables Intel VT-D (Intel Virtualization for Directed I/O) technology.
fHardware 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.
fAdjacent 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.
fCPU AES Instructions [Enabled]
Enables or disables the CPU AES (Advanced Encryption Standard-New
Instructions) support. This item appears when a CPU supports this function.
51
BIOS Setup