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Chapter 7: BIOS
DIMM Information
CPU Socket 1 DIMM Information, CPU Socket 2 DIMM Information
The status of the memory modules detected by the BIOS will be displayed
as detected by the BIOS.
Memory Mode
When Independent is selected, all DIMMs are available to the operating
system. When Mirroring is selected, the motherboard maintains two identical
copies of all data in memory for data backup. When Lock Step is selected,
the motherboard uses two areas of memory to run the same set of operations
in parallel. The default setting is Independent.
DRAM RAPL Mode
RAPL (Running Average Power Limit) provides mechanisms to enforce power
consumption limits on supported processors The options are Disabled, DRAM
RAPL MODE0, and DRAM RAPL MODE1.
DDR Speed
Use this feature to force a DDR3 memory module to run at a frequency other
than what is specifi ed in the specifi cation. The options are Force DDR3-800,
Force DDR3-1066, Force DDR3-1333, Force DDR3-1600 and Force SPD,
and Auto.
Note: To run DDR3 1600 memory, with the MEM-DR316L-SL04-ER16
(1600/1.35V), you have set the memory speed to "Forced SPD" instead.
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.
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