4-8
X8DA3/X8DAi
User’s Manual
CPU Bridge Confi guration
QPI Links Speed
This feature selects QPI's data transfer speed. The options are Slow-mode, and
Full Speed
.
QPI Frequency
This selects the desired QPI frequency. The options are
Auto
, 4.800 GT,
5.866GT, 6.400 GT.
QPI L0s and L1
This enables the QPI power state to low power. L0s and L1 are automatically
selected by the motherboard. The options are
Disabled and
Enabled
.
Memory Frequency
This feature forces a DDR3 frequency slower than what the system has de-
tected. The available options are
Auto
, Force DDR-800, Force DDR-1066,
Force DDR-1333.
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 - A preset threshold of correctable errors is used to trigger fail-over.
The spare memory is put online and used as active memory in place of the
failed memory.
Demand Scrubbing
A memory error-correction scheme where the Processor writes corrected data
back into the memory block from where it was read by the Processor. The op-
tions are
Enabled
and Disabled.
Patrol Scrubbing
A memory error-correction scheme that works in the background looking for and
correcting resident errors. The options are
Enabled
and Disabled.
Throttling - Closed Loop/Throttling - Open Loop
Throttling improves reliability and reduces power in the processor by automatic
voltage control during processor idle states. Available options are
Disabled
and
Enabled. If Enabled, the following items will appear:
