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Chapter 7: BIOS
CPU Multi-Core Enable/Disable (Available when supported by the CPU)
Select Enabled to enable multi-core CPU support to enhance CPU performance for
the following CPU Cores. The options are Disabled and Enabled.
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Core 0/Core 1/Core 2/Core 3/Core 4/Core 5/Core 6/Core 7
A20M
When the A20M# pin is enabled, it will force address bit 20 to zero (to be masked)
to emulate the address wraparound for the real-address mode at 1 MB. Set this
item to Enabled for the legacy operating systems and applications that require A20M
support to work properly. The options are Enabled and Disabled.
Intel® SpeedStep™ Technology
Intel EIST (Enhanced Intel SpeedStep Technology) allows the system to automati-
cally adjust the processor voltage and core frequency in an effort to reduce power
consumption and heat dissipation. Please refer to Intel's web site for detailed infor-
mation. The options are Disable (Disable GV3) and Enable (Enable GV3).
Intel® TurboMode Tech (Available when Intel EIST Technology is enabled)
Select Enabled to use the TurboMode Technique to boost system performance. The
options are Enabled and Disabled.
Performance/Walt Select
Use this feature to balance the need between system performance and energy sav-
ing. The options are Traditional and Power Optimized (for energy saving).
Intel® C-STATE Tech
If enabled, C-State is set by the system automatically to either C2, C3 or C4 state.
The options are Disabled and Enabled. If this feature is set to Enabled, the follow-
ing items will display.
C-State Package Limit Setting
If this feature is set to Auto, the AMI BIOS will automatically set the limit on the
C-State package register. The options are Auto, C1, C3, C6 and C7.
C1 Auto Demotion
Select Enabled to allow the CPU to demote C3, C6 or C7 requests to C1 based on
un-core auto-demote information. The options are Disabled and Enabled.
C3 Auto Demotion
If this feature is set to Enabled, the CPU will conditionally demote C6 or C7 re-
quests to C3 based on un-core auto-demote information. The options are Disabled
and Enabled.
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