SUPER MICRO Computer X8STE Advanced Chipset Control, DCA Prefetch Delay, QPI Links Speed

Chapter 4: AMI BIOS

card to handle some or all packet processing of this add-on card. For this moth- erboard, the TOE device is built inside the ESB 2 South Bridge chip. This feature is supported only by some types of processors (i.e., Intel Nehalem-WS 1S). The

options are Enabled and Disabled.

DCA Prefetch Delay

A DCA Prefetch is used with TOE components to prefetch data in order to shorten execution cycles and maximize data processing efficiency. Prefetching too fre- quently can saturate the cache directory and delay necessary cache accesses. This feature reduces or increases the frequency the system prefetches data. The options are [8], [16], [32], [40], [48], [56], [64], [72], [80], [88], [96], [104], [112], [120]

Advanced Chipset Control

The items included in the Advanced Settings submenu are listed below:

QPI and IMC Configuration

QuickPath Interconnect (QPI) is the connection between the CPU and the motherboard's I/O hub. Use this feature to modify speed and power manage- ment settings.

QPI Links Speed

Use this feature to select QPI data transfer speed. The options are Slow-mode, and Full Speed.

QPI Frequency

Use this option to set the QPI frequency. The options are Auto, 4.800 GT, 5.866 GT, and 6.400 GT.

QPI L0s and L1

Select Enabled to lower the QPI power state. L0s and L1 are automatically selected by the motherboard. The options are Disabled and Enabled.

Memory Frequency

Use this option to force the system memory to run at a different frequency than the default frequency. The available options are Auto, Force DDR-800, Force DDR-1066, and Force DDR-1333.

Memory Mode

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

Independent - All DIMMs are available to the operating system.

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