MSI X299 TOMAHAWK

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BIOS Setup
fIntel VT-D Tech [Disabled]
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.
fIntel Adaptive Thermal Monitor [Enabled]
Enables or disables the Intel adaptive thermal monitor function to protect the CPU
from overheating.
[Enabled] Throttles down the CPU core clock speed when the CPU is over the
adaptive temperature.
[Disabled] Disables this function.
fIntel C-State [Auto]
Enables or disables the Intel C-state. C-state is a processor power management
technology defined by ACPI.
[Auto] This setting will be configured automatically by BIOS.
[Enabled] Detects the idle state of system and reduce CPU power consumption
accordingly.
[Disabled] Disable this function.
fC1E Support [Disabled]
Enables or disables the C1E function for power-saving in halt state. This item
appears when Intel C-State is enabled.
[Enabled] Enables C1E function to reduce the CPU frequency and voltage for
power-saving in halt state.
[Disabled] Disables this function.
fPackage C State Limit [Auto]
This item allows you to select a CPU C-state level for power-saving when system is
idle. The options of C-state depend on the installed CPU. This item appears when
Intel C-State is enabled.
fCFG Lock [Enabled]
Lock or un-lock the MSR 0xE2[15], CFG lock bit.
[Enabled] Locks the CFG lock bit.
[Disabled] Un-locks the CFG lock bit.