Chapter 4: AMI BIOS
4-9
Intel(R) SpeedStep(tm)
Intel SpeedStep Technology allows the system to automatically adjust
processor voltage and core frequency in an effort to reduce power con-
sumption and heat dissipation. Please refer to Intel’s web site for
detailed information. The options are Disabled and Enabled.
HDC Control
Enable this feature for the processor to access and modify data on the
hard disk drive. 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 Enabled and Disabled. If this
feature is set to Enabled, the following items will display:
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 Enabled and Disabled.
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 this item is enabled, the CPU will conditionally undemote from
demoted Packaged Package C-State Un-Demotion. The options are Dis-
abled and Enabled.
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