X9DR3_i-LN4F+ 1.1.indb - Supermicro

Chapter 4: AMI BIOS
(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.
Demand Scrub
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 Scrubbing
for ECC memory correction. The options are Enabled and Disabled.
Data Scrambling
Select Enabled to enable data scrubbing to ensure data security and integrity.
The options are Enabled and Disabled.
Device Tagging
Select Enabled to support device tagging. The options are Disabled and Enabled.
Thermal Throttling
Throttling improves reliability and reduces power consumption in the processor
via automatic voltage control during processor idle states. The options are
Disabled and CLTT (Closed Loop Thermal Throttling).
Double Refresh
Select Enabled to support double refresh for onboard memory to enhance
memory and system performance. The options are Auto, Enabled, and Disabled.
South Bridge Configuration
This feature allows the user to configure the settings for the Intel PCH chip.
PCH Information
This feature displays the following PCH information.
Name: This item displays the name of the PCH chip.
Stepping: This item displays the status of the PCH stepping.
USB Devices: This item displays the USB devices detected by the BIOS.
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