Supermicro C7Z270-CG - Package C State Limit; Package C State Workaround; GT - Power Management Control

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Supermicro C7Z270-CG Motherboard User’s Manual
RC6 (Render Standby)
Use this feature enable Render Standby support. The options are
Enabled and Disabled.
CState Pre-Wake
Use this option to enable or disable the C-State pre wake. The options
are Disabled and Enabled.
IO MWAIT Redirection
When set, this option will map I/O read instructions sent to the I/O reg-
isters PMG_IO_BASE_ADDRBASE+offset to MWAIT (offset). The options
are Disabled and Enabled.
Package C State Limit
Select Auto for the AMI BIOS to automatically set the limit on the C-State
package register. The options are Auto, Cpu Default, C10, C9, C8, C7s,
C7, C6, C3, C2, and C0/C1.
Package C State Workaround
Enable this feature to x old HDDs that have problems entering the
Package C State. The options are Disabled and Enabled.
GT - Power Management Control