ASROCK 990FX Extreme9 User Manual page 58

Voltage Configuration
CPU Load-line calibration
Use this to select CPU Load-line calibration. The default value is [Auto].
DRAM Voltage
Use this to select DRAM Voltage. The default value is [Auto].
NB Voltage
Use this to select NB Voltage. The default value is [Auto].
HT Voltage
Use this to select HT Voltage. The default value is [Auto].
CPU VDDA Voltage
Use this to select CPU VDDA Voltage. The default value is [Auto].
PCIE VDDA Voltage
Use this to select PCIE VDDA Voltage. The default value is [Auto].
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