User's Manual (1.0)

Chapter 7: BIOS
7-13
Memory Energy/Performance
Use this feature to determine the parameters for memory module energy
consumption. Select Performance to maintian optimal functionality or select
Energy Saving to reduce power consumption. The options are Performance
and Energy Saving.
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 Auto, Force
DDR3-800, Force DDR3-1066, Force DDR3-1333, Force DDR3-1600 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 scrambling to ensure data security and integrity.
The options are Disabled and Enabled.