Buying a new PC power supply is complex here’s what you need to know

Buying a new PC power supply can be a daunting task, especially with all the different specifications and features that are available. However, with a little knowledge and research, you can find the perfect power supply for your needs. In this article, we will cover the most important factors to consider when buying a new PC power supply, including wattage, efficiency, and form factor.


The first and most important factor to consider when buying a new PC power supply is the wattage. The wattage of a power supply determines how much power it can provide to your PC components. The more powerful your PC components are, the higher the wattage you will need. A good rule of thumb is to choose a power supply that is rated at least 50 watts higher than the total power consumption of your PC components. If you are unsure of the wattage, please consult with a computer repairs service near you.


Another important factor to consider when buying a new PC power supply is efficiency. Efficiency is measured as a percentage and indicates how much of the power supplied to the power supply is actually used by the PC components. Higher efficiency means that less power is wasted as heat, which can help to prolong the life of your PC components. Look for power supplies that have an efficiency rating of at least 80%.

Form Factor

The form factor of a power supply refers to the physical size and shape of the unit. The most common form factors are ATX, SFX, and TFX. Make sure to check the form factor of your PC case and the power supply unit you are considering purchasing match.

Modular vs Non-Modular

When it comes to buying a new PC power supply, you will have to choose between a modular and a non-modular power supply. Non-modular power supplies come with all the cables already attached, and you cannot remove or add any cables. Modular power supplies, on the other hand, allow you to remove and add cables as needed. This can be a great feature if you are looking for a new computer build or if you have a lot of unused cables.

Brand and Warranty

Lastly, it is important to consider the brand and warranty of the power supply. Look for power supplies from reputable brands that have a good reputation for quality and reliability. Also, check the warranty period and what is covered under warranty. Some power supplies come with a 3-year warranty, while others may only have a 1-year warranty.

Final Words

In conclusion, buying a new PC power supply is a complex task requiring several factors to consider carefully. By understanding the importance of wattage, efficiency, form factor, modularity, brand, and warranty, you can make an informed decision that will ensure that your PC has the power it needs to run smoothly and efficiently.