User Manual

Chapter 7: BIOS
7-15
AMI BIOS will automatically monitor and display the following information:
CPU1 Temperature, CPU2 Temperature, System Temperature, CPU1 VCORE/
CPU2 VCORE (*for 2U systems), 3.3V Vcc(V), +5 Vin, 12V Vcc(V), -12V Vcc (V),
DRAM VTT, 1.2V Vcc, DIMM Voltage, 1.5V Voltage, 5V Standby, 3.3V Standby.
System Fan Monitor
Fan Speed Control Modes:
This feature allows the user to decide how the system controls the speed 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, and vise versa.
If the option is set to “3-pin fan,” the fan speed will be controlled by voltage. If the
option is set to “4-pin,” the fan speed will be controlled by Pulse Width Modulation
(PWM). Select “3-pin” if your chassis came with 3-pin fan headers. Select “4-pin” if
your chassis came with 4-pin fan headers. Select “Workstation” if your system is
used as a Workstation. Select “Server” if your system is used as a Server. Select
“Disable” to disable the fan speed control function to allow the onboard fans to run
at full speed (12V) at all the time. The options are 1. Disable, 2. 3-pin (Server),
3. 3-pin (Workstation), 4. 4-pin (Server) and 5. 4-pin (Workstation).
Fan1 Speed to Fan6 Speeds
7-4 Boot Settings