CompTIA A+ Certification Core 1 (220-1101) - Choosing a Power Supply

The video tutorial explains the concept of watts, volts, and amps, emphasizing that real-world power supplies are not perfectly efficient. It discusses how to determine the appropriate wattage for a computer system, highlighting the use of online calculators. The tutorial also covers the importance of the 80 Plus rating system for power supply efficiency and compares modular and soldered power supplies. Finally, it addresses the standard ATX power supply sizes and their compatibility with different system sizes.

What is the relationship between volts, amps, and watts in a perfect world?

How can one determine the wattage needed for a computer system?

Why is it important to consider efficiency when choosing a power supply?

What factors can affect the efficiency of a power supply?

What does the 80 Plus rating system signify?

What are the advantages of modular power supplies compared to soldered ones?

What should one be aware of when looking for power supplies for small form factor systems?