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Chapter 5: BIOS
DRAM RAPL
Baseline
This setting controls DRAM power consumption by limiting memory
bandwidth. Options include Disable, DRAM RAPL Mode 0 and
DRAM
RAPL Mode 1
.
Set Throttling Mode
This setting enables or disables thermal sensors on the DIMM to derive
DRAM temperature estimation for throttling. Options include Disabled and
CLTT
.
A7 Mode
This setting enables/disables A7 mode for slightly higher memory
bandwidth. Options include Disable and
Enable
, with Enable being
recommended.
DIMM Information
This submenu, when viewed, displays static memory topology with DIMM
population information.
Memory RAS
Configuration
This submenu displays and provides options to change the memory RAS
settings.
Patrol Scrub
This setting enables/disables the ability to proactively searches the system
memory repairing correctable errors. Options include Disable or
Enable
.
Patrol Scrub
Interval
This selects the number of hours (1-24) required to complete a full scrub. A
value of “0” means auto. Default value is
24
. Use the keyboard’s number
pad “+ or -” keys to toggle up or down the number value you desire.
Demand Scrub
This setting enables/disables the ability to writer corrected data back to the
memory once a correctable error is detected on a read transaction.
Options include Disable or
Enable
.
Device Tagging
Use this setting to enable or disable tagging of the memory device that
generates stuck bits of hard errors.
South Bridge
Configuration
This sub-menu configures South Bridge features and shows configuration
information.
Legacy USB Support
This setting allows you to enable the use of Legacy USB devices. If this
option is set to Auto, legacy USB support will be automatically disabled if
no USB device is connected. The Disable option will keep USB devices
available only for EFI applications. Options include Auto, Disabled or
Enabled
.
EHCI Hand-off
This item is for the Operating Systems that do not support Enhanced Host
Controller Interface (EHCI) hand-off. When this item is enabled, EHCI
ownership change will be claimed by the EHCI driver. The options are
Enabled or
Disabled
.
Port 60/64 Emulation
This feature enables or disables I/O port 60h/64h emulation support. This
feature should be enabled for complete USB keyboard legacy support for
operating systems that cannot detect the presence of USB devices.
Options include
Enabled
or Disabled.
EHCI1
This setting allows you to control the USB EHCI (USB 2.0) functions. One
EHCI controller must always be enabled.
EHCI2
This setting allows you to control the USB EHCI (USB 2.0) functions. One
EHCI controller must always be enabled.
Table 5-5. Chipset Configuration Sub-menu (Continued)
Menu Option
Description
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