Advanced Chipset Control; Qpi Frequency; Qpi L0S And L1; Memory Frequency - Silicon Graphics Octane III User Manual

4: Octane III Workstation BIOS Information
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Select Enable to use the feature of Clock Spectrum, which will allow the BIOS to monitor and
attempt to reduce the level of Electromagnetic Interference caused by the components whenever
needed. The options are Disabled and Enabled.

Advanced Chipset Control

The items included in the Advanced Settings submenu are listed below:
CPU Bridge ConfigurationQPI Links Speed
This feature selects QPI's data transfer speed. The options are Slow-mode, and Full Speed.

QPI Frequency

This selects the desired QPI frequency. The options are Auto, 4.800 GT, 5.866GT, 6.400 GT.

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. The available
options are Auto, Force DDR-800, Force DDR-1066, Force DDR-1333.
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 (redundant) copies of all data in
memory.
• 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

007-5633-001