Supermicro C9Z790-CG - Page 129

Chapter 4: UEFI BIOS
129
Fan Control
Fan Control Setting
Fan Speed Control Mode
This feature allows you to decide how the system controls the speeds of the onboard fans.
The CPU temperature and the fan speed are correlative. When the CPU on-die temperature
increases, the fan speed will also increase for e󰀨ective system cooling. Select "Full Speed"
to allow the onboard fans to run at full speed (of 100% Pulse Width Modulation Duty Cycle)
for maximum cooling. This setting is recommended for special system conguration or
debugging. Select "Stable" for the onboard fans to run at 50% of the Initial PWM Cycle
in order to balance the needs between system cooling and power saving. This setting is
recommended for regular systems with normal hardware congurations. Select "Quiet" to
optimize for minimal fan noise and Custom to enter user-specic settings. The options are
Quiet, Stable, Full Speed, and Customize.
SYS Fan Control
Use this feature to select System Fan Control Mode. The options are Auto, PWM Mode
(Pulse Width Modulation Mode), and DC Mode.
*If the "Fan Speed Control Mode" feature set to Customize, the following features
will become available for conguration:
CPU Fan1/CPU Fan2/SYS Fan1/SYS Fan2/SYS Fan3 Control
CPU Fan1/CPU Fan2/SYS Fan1/SYS Fan2/SYS Fan3 Reference Sensor
Use this feature to select the reference sensor of fan. The options are CPU Temperature
and PCH Temperature.
Temperature 1-4 / PWM1-4
Use this feature to set the temperature. The value should be set between 20-100.
Note: By default, only Temperature 1, PWM1, Temperature 2, and PWM2 can be ad-
justed. Be sure the value you set on each feature must be lower than 100 if you want
to adjust Temperature 3, PWM3, Temperature 4, and PWM4, except Temperature 1
and PWM1.