SUPER MICRO Computer X7DA3 Snoop Filter, Crystal Beach Features, Route Port 80h Cycles to

Chapter 4: BIOS

Snoop Filter

Select Enabled to eliminate snoop traffi c to the graphics port to greatly improve system performance when running graphics intensive applications. The options are Enabled and Disabled.

Crystal Beach Features

Select Enabled to use the Intel I/O AT (Acceleration Technology) to accelerate the performance of TOE devices. (Note: A TOE device is a specialized, dedicated processor that is installed on an add-on card or a network card to handle some or all packet processing of this add-on card. For this motherboard, the TOE device is built inside the ESB 2 South Bridge chip.) The options are Enabled and Disabled.

HD (High Definition) Audio Controller

This option allows the user to enable or disable the onboard HD Audio Controller. Select Auto to allow the HD Audio Controller to be automatically enabled when detected by the BIOS. The options are Disabled and Auto.

Route Port 80h Cycles to

This feature allows the user to decide which bus to send debug information to. The options are Disabled, PCI and LPC.

Clock Spectrum Feature

If Enabled, the BIOS will monitor the level of Electromagnetic Interference caused by the components and will attempt to decrease the interference whenever needed. The options are Enabled and Disabled.

High Precision Event Time

Select Yes to activate the High Precision Event Timer (HPET), which is capable of producing periodic interrupts at a much higher frequency than a Real-time Clock (RTC) can in synchronizing multimedia streams, providing smooth playback and reducing the dependency on other timestamp calculation devices, such as an x86 RDTSC Instruction embedded in a CPU. The High Precision Event Timer is used to replace the 8254 Programmable Interval Timer. The options for this feature are Yes and No.

USB Function

Select Enabled to enable the function of USB devices specifi ed. The settings are Enabled and Disabled.

Legacy USB Support

This setting allows you to enable support for Legacy USB devices. The settings are Enabled and Disabled.

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