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X9DRD-iF/LF Motherboard User’s Manual
Mirroring
This item displays if memory mirroring is supported by the motherboard. Memory
mirroring creates a duplicate copy of the data stored in the memory to enhance
data security.
Sparing
This item displays if memory sparing is supported by the motherboard. Memory
sparing enhances system performance.
DIMM Information
The status of the memory modules specied above will be displayed as detected
by the BIOS.
Memory Mode
When Independent is selected, all DIMMs are available to the operating system.
The only option is Independent.
DRAM RAPL Mode
RAPL (Running Average Power Limit) provides mechanisms to enforce power
consumption limits on supported processors The options are DRAM RAPL
MODE0 , DRAM RAPL MODE1, and Disabled.
DDR Speed
Use this feature to force a DDR3 memory module to run at a frequency other
than what is specied in the specication. The options are Auto, Force DDR3-
800, Force DDR3-1066, Force DDR3-1333, Force DDR3-1600 and Force SPD.
Channel Interleaving
This feature selects from the different channel interleaving methods. The options
are Auto, 1 Way, 2 Way, 3, Way, and 4 Way.
Rank Interleaving
This feature allows the user to select a rank memory interleaving method. The
options are Auto, 1 Way, 2 Way, 4, Way, and 8 Way.
Patrol Scrub
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 IO hub 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 IO hub
will be scrubbed every day. The options are Enabled and Disabled.