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TDC Current Limit
The TDC Current Limit is defined in 1/8A (Amperes) increments and
uses the BIOS mailbox command 0x1A. A value of 1000 equals 125A.
Valid range is 0-32767. Enter 0 for 0 Amps.
TDC Time Window
The TDC Time Window is defined in milliseconds. Valid range is 1-8ms
and 10ms. Note that 9ms has no valid encoding in the MSR defini-
tion. The options are 1ms, 2ms, 3ms, 4ms, 5ms, 6ms, 7ms, 8ms,
and 10ms.
TDC Lock
This feature enables or disables TDC Lock. The options are Disabled
and Enabled.
C states
C-States architecture, a processor power management platform devel-
oped 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 is set to Enabled, the following items will be displayed:
Enhanced C-states
(Available when "CPU C States" is set to Enabled)
Select Enabled to enable Enhanced C1 Power State to boost system
performance. The options are Disabled and Enabled.
C-State Auto Demotion
When this item is enabled, the CPU will conditionally demote C State
based on un-cored auto-demote information. The options are Disabled,
C1, C3, and C1 and C3.
C-State Un-demotion
When this item is enabled, the CPU will conditionally undemote from
demoted C3 or C1. The options are Disabled, C1, C3, and C1 and C3.
Package C-State Demotion
This item enables the Package C-State demotion. The options are Dis-
abled and Enabled.
Package C-State Un-Demotion
When set, the CPU will conditionally undemote from demoted Packaged
Package C-State Un-Demotion. The options are Disabled and Enabled.
4-17
Chapter 4: AMI BIOS
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