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Chapter 2 System BIOS
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Demand Scrub
This function enables the CPU to correct ECC errors while reading a certain sec-
tion of the memory.
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Device Tagging
When this function is enabled, if a certain particle in the rank of DIMM fails, then
the correcting particle will replace it. After this, this rank has no Device tagging func-
tion and the correction ability drops.
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Data Scrambling
This function can help to avoid the signal errors when single bit consecutively
displays “0”or”1” in memory visit.
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Thermal Throttling
There three options, [Disable], [CLTT], [OLTT].
Thermal Throttling is a protective function for memory overheat.
Two available options:
CLTT-> the memory temperature is read by the in-built sensor (TSOD), when the
temperature reaches a certain threshold value, the bandwidth will be automatically re-
duced.
OLTT-> for memory without in-built sensor (TSOD), the bandwidth will be lim-
ited in the value of [OLTT Peak BW %].
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Altitude
Thermal Throttling function calculating index, the altitude of the machine.
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Rank Margin
Used in the memory test while the system runs slowly and the performance is ad-
versely affected. Default to close.
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Serial Message Debug Level
Rank Margin tests relative settings.
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DIMM Information
This menu item displays the memory information, including memory capacity and
current memory modes.
2.2.3.2 South Bridge
This menu mainly display PCH relative information and settings.
