ASROCK 775VM800PRO-DDR2 User Manual page 31

OnBoard AC'97 Audio
Select [Auto], [Enabled] or [Disabled] for the onboard AC'97 Audio feature.
If you select [Auto], the onboard AC'97 Audio will be disabled when PCI
Sound card is plugged.
OnBoard MC'97 Modem
Select [Auto] or [Disabled] for the onboard MC'97 Modem feature.
Thermal Throttling Temperature
This allows you to select the temperature to generate the thermal override
event for thermal throttling. Configuration options: [Auto], [Disabled], [50C],
[55C], [60C], [65C], [70C], and [75C]. The default value is [Auto].
Thermal Throttling Duty Cycle
This allows you to select the Duty Cycle of the STPCLK# signal when the
thermal override event is generated. The percentage means the clock On
%. Configuration options: [Auto], [12.50%], [25.00%], [37.50%], [50.00%],
[62.50%], [75.00%], and [87.50%]. The default value is [Auto].
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