4-10
X8STi/X8STi-F/X8STi-3F/X8STi-LN4
User’s Manual
Memory Mode
The options are
Independent
, Channel Mirror, Lockstep and Sparing.
Independent - All DIMMs are available to the operating system.
Channel Mirror - The motherboard maintains two identical copies of all data
in memory for redundancy.
Lockstep - The motherboard uses two areas of memory to run the same set
of operations in parallel.
Sparing - Memory sparing occurs when on-demand inactive memory is au-
tomatically activated by the system to temporarily replace failed memory until
a service action can be performed (supported only on 2010 Intel® Core™
processor family based on the 32nm Intel® microarchitecture).
Demand Scrubbing
Demand Scrubbing is a process that allows the CPU to correct correctable
memory errors found on a memory module. When the CPU or I/O issues a
demand-read command, and the read data from memory turns out to be a
correctable error, the error is corrected and sent to the requestor (the original
source). Memory is updated as well. Select Enabled to use Demand Scrub-
bing for ECC memory correction. The options are Enabled and
Disabled
.
Patrol Scrubbing
Patrol Scrubbing is a process that allows the CPU to correct correctable
memory errors detected on a memory module and send the correction to the
requestor (the original source). When this item is set to Enabled, the North
Bridge will read and write back one cache line every 16K cycles, if there is
no delay caused by internal processing. By using this method, roughly 64 GB
of memory behind the North Bridge will be scrubbed every day. The options
are Enabled and
Disabled
.
Throttling - Closed Loop
Throttling improves reliability and reduces power in the processor by au-
tomatic voltage control during processor idle states. Available options are
Disabled and
Enabled.
Intel VT-d
Select Enabled to enable Intel's Virtualization Technology support for Direct I/O VT-d
by reporting the I/O device assignments to VMM through the DMAR ACPI Tables.
This feature offers fully-protected I/O resource-sharing across the Intel platforms,
providing the user with greater reliability, security and availability in networking and
data-sharing. The settings are Enabled and
Disabled
.
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