Supermicro X9DRH-ITF User Manual download pdf (Page 85)

Chapter 4: AMI BIOS

4-13

DDR Speed

Use this feature to force a DDR3 memory module to run at a frequency other than

what is indicated in the system specication. The options are Auto, Force DDR3-

800, Force DDR3-1066, Force DDR3-1333, Force DOR3-1600 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.

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 and ensure data security and integrity.

The options are Disabled and Enabled.

DRAM RAPL

RAPL which stands for Running Average Power Limit is a feature that provides

mechanisms to enforce power consumption limits on supported processors The

options are Mode 0, MODE1, and Disabled.

Device Tagging

Select Enabled to support device tagging. The options are Disabled and En-

abled.

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Supermicro X9DRH-ITF User Manual Page 85