SUPER MICRO Computer X8DTG-DF QPI L0s and L1, Memory Frequency, Memory Mode, Demand Scrubbing

X8DTG-DF User’s Manual

QPI L0s and L1

This enables the QPI power state to low power. L0s and L1 are automatically selected by the motherboard. The options are Disabled and Enabled.

Memory Frequency

This feature forces a DDR3 frequency slower than what the system has detected to run at the frequency as specified. The available options are Auto, Force DDR- 800, Force DDR-1066, Force DDR-1333 and Force SPD.

Memory Mode

The options are Independent, Channel Mirror, Lockstep and Sparing.

Independent - All DIMMs are available to the operating system.

Channel Mirror - The motherboard maintains two identical copies of all data in memory for redundancy.

Lockstep - The motherboard uses two areas of memory to run the same set of operations in parallel.

Sparing - A preset threshold of correctable errors is used to trigger fail-over. The spare memory is put online and used as active memory in place of the failed memory.

Demand Scrubbing

A memory error-correction scheme where the Processor writes corrected data back into the memory block from where it was read by the Processor. The op- tions are Enabled and Disabled.

Patrol Scrubbing

A memory error-correction scheme that works in the background looking for and correcting resident errors. The options are Enabled and Disabled.

NUMA Support

Select Enabled to use the feature of Non-Uniform Memory Access to improve CPU performance. The options are Enabled and Disabled.

Memory ECC Error Threshold

This feature allows the user to set the correctable memory ECC error limit for AMI BIOS to handle it. The Default setting is 255.

Throttling - Closed Loop/Throttling - Open Loop

Throttling improves reliability and reduces power in the processor by automatic voltage control during processor idle states. Available options are Disabled and Enabled. If Enabled, the following items will appear:

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