IBM BDM-610000049 - Manual (Page 85)

BDM-610000049 Rev G Chapter 4: Using the cpuModule 75
Reducing Power Consumption
In addition to the CPU’s low power modes, power consumption can further be reduced by making some
modifications to the BIOS setup. When the following features are modified, the CPU’s power consumption will
decreases:
• CPU Speed: Setting the processor to its minimum speed in the BIOS will reduce power consumption
• Memory Speed: Changing the DDR DRAM clock frequency will reduce power consumption, however
memory performance will also be reduced.
• Ethernet: Can be disabled in the BIOS
• Serial Ports: Can be disabled in the BIOS
• LVDS Flat Panel: If an LVDS panel is not connected to the cpuModule while using a VGA monitor,
setting the BIOS to use only a CRT (VGA) monitor will reduce power consumption.
• Fan Mode: Set the fan to auto mode so it is used only when the processor reaches high temperatures.
This option will only effect the fan if it is connected to the switched fan power connector (CN15).
• Multi-Color LED: Can be disabled in the BIOS