Chapter 4: AMI BIOS
4-7
C3 State
This feature allows the user to decide how the onboard 5500 Series processor
will act at C3 State. The options are Disabled, ACPI 2 and ACPI 3.
C6 State
This feature allows the user to decide how the onboard 5500 Series processor
will act at C6 State. The options are Disabled and Enabled.
C1 Auto Demotion
Select Enable for the CPU to conditionally demote C3, C6 or C7 requests to
C1 based on un-core auto-demote information. The options are Disabled and
Enabled.
C3 Auto Demotion
Select Enable for the CPU to conditionally demote C6 or C7 requests to C3
based on un-core auto-demote information. The options are Disabled and
Enabled.
ACPI T State
Select Enabled to allow the BIOS to report processor throttling in ACPI. The
options are Enabled and Disabled.
DCA Technology
This feature accelerates the performance of TOE devices. Note: A TOE device is
a specialized, dedicated processor that is installed on an add-on card or a network
card to handle some or all packet processing of this add-on card. For this moth-
erboard, the TOE device is built inside the ESB 2 South Bridge chip. This feature
is supported only by some types of processors (i.e., Intel Nehalem-WS 1S). The
options are Enabled and Disabled.
DCA Prefetch Delay
A DCA Prefetch is used with TOE components to prefetch data in order to shorten
execution cycles and maximize data processing effi ciency. Prefetching too fre-
quently can saturate the cache directory and delay necessary cache accesses. This
feature reduces or increases the frequency the system prefetches data. The options
are [8], [16], [32], [40], [48], [56], [64], [72], [80], [88], [96], [104], [112], [120]
Advanced Chipset Control
The items included in the Advanced Settings submenu are listed below:
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