Fan Speed Control Modes; Voltage Monitoring - Silicon Graphics Altix XE250 User Manual

5: BIOS Settings

Fan Speed Control Modes

Voltage Monitoring

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This feature allows the user 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, and vice versa. Select Workstation if your system is used as a
Workstation. Select Server if your system is used as a Server. Select 3-pin if your chassis uses
3-pin fans. Select 4-pin if your chassis uses 4-pin fans. Select "Disable" to disable the fan speed
control function and allow the onboard fans to constantly run at the full speed (12V). The Options
are:
• 1. Disable
• 2. Optimized Server w/3-pin
• 3. Optimized Workstation w/3-pin
• 4. Optimized Server w/4-pin
• 5. Optimized Workstation w/4-pin.
The following items are monitored and displayed:
• Vcore A
• Vcore B
• P1V5
• +3.3V
• +12V
• 5Vsb
• 5VDD
• P_VTT
• Vbat
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