How many watts should my power supply be for gaming

Updated: 03/05/2023 by Computer Hope

Several factors should be considered when determining how big a power supply you need for your computer. These factors include computer case size, the style of power supply, and your machine's wattage requirements.

We recommend you read both sections of this page before selecting a new or replacement power supply for purchase.

Computer case size and shape of the power supply

Computer cases come in many sizes, as do power supplies.

Some computer cases can accommodate a full-size power supply while others require a smaller, more specific size such as those sometimes found in brand-name computers.

Power supply unit

Proprietary style power supplies, such as those found in computers manufactured by HP (Hewlett-Packard), Compaq, Dell, Gateway, etc., may not be compatible with other systems. As you can see in the image below, power supplies not only differ in size, but in shape as well.

The power supply on the right is has a rectangular, elongated shape to fit in a more slender or smaller case.

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