Chapter 5: BIOS
55
Patrol Scrub Enable
Patrol Scrubbing is a process that allows the CPU to correct correctable memory errors
detected in a memory module and send the correction to the requestor (the original source).
When this item is set to Enable, 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
64GB of memory behind the IO hub will be scrubbed every day. The options are
Enabled
and Disabled.
Patrol Scrub Period
Use this feature to select the Patrol Scrub period. The options are
24 hours
, 10 hours, 4
hours, and 1 hour.
Demand Scrub Enable
Demand Scrubbing is a process that allows the CPU to correct correctable memory errors
found in 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 corrected as well. Select Enable to
use Demand Scrubbing for ECC memory correction. The options are
Enabled
and Disabled.
Write Data Early Enable
Use this feature to enable or disable write data early. The options are
Disabled
and
Enabled.
Select Refresh Rate
Use this feature to select the memory refresh rate. The options are
1x/2x
and 1x/2x/4x.
CKE Power Down
Clock enable (CKE) Power Down controls the low power down for the memory. The options
are
Disabled,
Active Power Down, and Precharge Power Down.
Memory Thermal Throttling
Memory thermal throttling is a power management feature that monitors read and write
activities to control power consumption. The options are Auto and
Disabled
.
*If the feature above is set to Auto or Enabled, CLTT Mode and MEMTRIP are available
to configure:
CLTT Mode
Use this feature to select the Closed Loop Thermal Throttling (CLTT) mode. The options
are
Normal
and Passthru.
MEMTRIP
Use this feature to enable or disable MEMTRIP. The options are
Disabled
and Enabled.
