Supermicro C9Z790-CG - Page 110

Super C9Z790-CG/-CGW User's Manual
110
C-States
C-States architecture, a processor power management platform developed by Intel, can
further reduce power consumption from the basic C1 (Halt State) state that blocks clock
cycles to the CPU. Select Enabled for CPU C-Sates support. The options are Disabled
and Enabled.
*If this feature above is set to enabled, the following features will become available
for conguration:
Enhanced C-states
This feature enables Enhanced C1 Power State to lower system energy consumption
while all cores are in C-State. The options are Disabled and Enabled.
C-State Auto Demotion
When this feature is enabled, the CPU will conditionally demote C-State based on un-
cored auto-demote information. The options are Disabled and C1.
C-State Un-Demotion
When this feature is enabled, the CPU will conditionally un-demote from demoted C3 or
C1. The options are Disabled and C1.
Package C-State Demotion
This feature enables the Package C-State demotion. The options are Disabled and En-
abled.
Package C-State Un-Demotion
When this feature is enabled, the CPU will conditionally un-demote from demoted Pack-
aged Package C-State Un-Demotion. The options are Disabled and Enabled.
C-State Pre-Wake
This feature enables the C-State pre wake. The options are Disabled and Enabled.
IO MWAIT Redirection
When enabled, this feature will map and send the I/O read instructions to the I/O registers.
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 C0/C1, C2, C3, C6, C7, C7S and C8.
Package C-State Workaround
This feature enables a workaround for Package C-State 6/7. The options are Disabled
and Enabled.