Acer Altos G901 User Manual
Page 214
Appendix C: Equipment log and configuration worksheets
198
Calculating the total combined power used
by the system
1
From the previous worksheet, enter the total current for each
column in the Power Usage Worksheet 2.
2
Multiply the voltage by the total current to get the total wattage
for each voltage level.
3
Add the total wattage for each voltage level to arrive at the total
combined power usage of the power supply.
3rd 5.25-inch
peripheral
drive
+3.3 V
+5 V
5 V
Standby
+12 V
-12 V
Fans
Total
Current
Power Usage Worksheet 2
Voltage level and total current
(V x A = W)
Total Watts for each voltage
level
(+3.3 V) x (______ A)
________ W
(+5 V) x (______ A)
________ W
(-5 V) x (______ A)
________ W
(+12 V) x (______ A)
________ W
(-12 V) x (______ A)
________ W
Total Combined Wattage
________ W
Power Usage Worksheet 1
Device
Current (maximum) voltage level
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