MSI X299 TOMAHAWK AC Quick Start Manual page 61

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.
fLong Duration Power Limit (W) [Auto]
Sets the long duration TDP power limit for CPU in Turbo Boost mode.
fLong Duration Maintained (s) [Auto]
Sets the maintaining time for Long duration power Limit(W).
fShort Duration Power Limit (W) [Auto]
Sets the short duration TDP power limit for CPU in Turbo Boost mode.
fCPU Current Limit (A) [Auto]
Sets maximum current limit of CPU package in Turbo Boost mode. When the
current is over the specified value, the CPU will automatically reduce the core
frequency for reducing the current.
fFCLK Frequency [Auto]
Set FCLK Frequency for early power on. Lower FCLK frequency may help you to set
higher base clock frequency.
fDMI Link Speed [Auto]
Sets DMI speed.
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BIOS Setup