Supermicro X8DTN+ [75/99] Cpubridgeconfiguration

Chapter 4: AMI BIOS

4-9

CPUBridgeConguration

QPI (Quick Path Interconnect) Links Speed

This feature selects data transfer speed for QPI Link connections. The options

are Slow-Mode, and Full Speed.

QPI Frequency (Available if the item - QPI Speed is set to Full Speed)

This feature allows the user to select the desired QPI frequency. The options

are Auto, 4.800 GT, 5.866GT, 6.400 GT.

QPI L0s and L1

This feature allows the user to set the QPI power state to a low setting. L0s and

L1 are automatically selected by the motherboard. The options are Disabled

and Enabled.

Memory Frequency

This feature forces a DDR3 module to run at a frequency other than what is

specied its the specication. Select Force SPD (Serial Presence Detect) to

force the module to run at a frequency specied on the SPD table. The avail-

able options are Auto, Force DDR-800, Force DDR-1066, Force DDR-1333

and Force SPD.

Memory Mode

The options are Independent, Channel Mirroring, and Lockstep.

When this feature is set to Independent, all DIMMs are available to the operat-

ing system.

When this feature is set to Channel Mirroring, the motherboard will maintain two

identical copies of all data in memory for redundancy.

When this feature is set to Lockstep, the motherboard will use two areas of

memory to run the same set of operations in parallel.

Demand Scrubbing

Demand Scrubbing is a memory error-correction scheme that allows the proces-

sor to write corrected data back into the memory block from where it was read

by the Processor. The options are Enabled and Disabled.

Patrol Scrubbing

Select Enabled to use Patrol Scrubbing, a memory error-correction scheme that

works in the background to look for and correct errors. The options are Enabled

and Disabled.