Name:
Date:
Period:
Lab 2.3 Choose the Right Power Supply
1. Follow the directions as indicated in the Lab Manual, and complete the following chart.
Component
AGP video card
PCI Express video card
Average PCI cards
DVD or CD drives
Hard Drives
Case fans and CPU fans
Motherboard
RAM modules
Processor
PCIe
Wattage
Requirement
30 W to 50 W
50 W to 100 W
5 W to 10 W
20 W to 40 W
15 W to 30 W
3 W (each)
15 W to 150 W
15 W per 1 GB
80 W to 140 W
100 W to 250 W
Number Present
Total Wattage
Total Wattage
2. Follow the directions as indicated in the Lab Manual.
3. Multiply the total wattage by 1.3. This multiplier takes into account the overhead the system and a
power supply need so that the system can run at about 30 percent to 70 percent of its maximum
capacity. What is your calculated total wattage, taking into account the required overhead?
a.
4. Follow the directions as indicated in the Lab Manual.
5. Complete the follow chart to show the available power connectors and how many are needed for
your system.
Connector
EIDE drive connectors (Molex)
Floppy drive connectors (Berg)
SATA connectors
ATX connector (20 or 24 pins)
Auxiliary power (4, 6, or 8 pins)
PCIE connector
Current Quantity
Quantity Needed
6. Look on the power supply label for the peak load rating in watts. What is this value?
a.
7. Based on what you have learned in this lab, is the power supply adequate for the system? Why or
why not?
a.