Worksheet, Calculating DC Power Usage

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

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

Table 14. Power Usage Worksheet 1

 

Current (maximum) at voltage level:

 

 

 

 

 

 

 

 

Device

+3.3 V

+5 V

–5 V

+12 V

–12 V

 

 

 

 

 

 

Server board

1.0 A

8.0 A

0.1 A

1.1 A

0.4 A

 

 

 

 

 

 

Primary Processor

 

 

 

 

 

 

 

 

 

 

 

Secondary Processor (if present)

 

 

 

 

 

 

 

 

 

 

 

Terminator card, if no second

1.6 A

 

 

 

 

processor

 

 

 

 

 

 

 

 

 

 

 

Memory (four 128 MB DIMMs)

1.8 A

0.3 A

 

 

 

 

 

 

 

 

 

PCI slot 1

 

 

 

 

 

 

 

 

 

 

 

PCI slot 2

 

 

 

 

 

 

 

 

 

 

 

PCI slot 3

 

 

 

 

 

 

 

 

 

 

 

PCI slot 4

 

 

 

 

 

 

 

 

 

 

 

PCI slot 5

 

 

 

 

 

 

 

 

 

 

 

PCI slot 6

 

 

 

 

 

 

 

 

 

 

 

ISA slot 1

 

 

 

 

 

 

 

 

 

 

 

1st 3.5-inch hard disk drive

 

 

 

 

 

2nd 3.5-inch hard disk drive

 

 

 

 

 

3rd 3.5-inch hard disk drive

 

 

 

 

 

4th 3.5-inch hard disk drive

 

 

 

 

 

5th 3.5-inch hard disk drive

 

 

 

 

 

6th 3.5-inch hard disk drive

 

 

 

 

 

7th 3.5-inch hard disk drive

 

 

 

 

 

3.5-inch diskette drive

 

 

 

 

 

 

 

 

 

 

 

CD-ROM drive

 

 

 

 

 

 

 

 

 

 

 

Cooling fan 1

 

 

 

 

 

 

 

 

 

 

 

Cooling fan 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Total Current

 

 

 

 

 

 

 

 

 

 

 

112

Equipment Log and Power Consumption Worksheets