196Appendix C: Equipment log and configuration worksheets

Calculating power consumption

The total combined wattage for the system configuration must be less than the output of your power supplies. Use the two worksheets in this section to calculate the power used by your system. For current and voltage requirements of add-in boards and peripherals, refer to the vendor documents.

Calculating DC power usage

1List the current for each board and device in the appropriate voltage level column in the Power Usage Worksheet 1.

2Add the currents in each column then go to the next worksheet.

Power Usage Worksheet 1

Device

Current (maximum) voltage level

 

 

 

 

 

 

+3.3 V

+5 V

5 V

+12 V

-12 V

Standby

 

 

 

 

Server board set

Primary processor

Second processor

Third processor

Fourth processor

Memory

PCI slot 1

PCI slot 2

PCI slot 3

PCI slot 4

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Acer G901 manual Calculating power consumption, Calculating DC power usage