Computer Power Supply Dimensions: Your Complete Guide to ATX, SFX, and Beyond

When building or upgrading a computer, choosing the right power supply is essential. But with so many different sizes and form factors available, it can be difficult to know which one is right for you. In this article, we'll take a closer look at the different dimensions of computer power supplies and help you choose the perfect one for your needs.

ATX Power Supplies

ATX (Advanced Technology Extended) power supplies are the most common type of power supply used in desktop computers. They come in a standard size of 150mm (width) x 86mm (height) x 140mm (depth). ATX power supplies are designed to fit in a standard ATX case and provide a wide range of power options, from 350 watts to 1200 watts or more.

SFX Power Supplies

SFX (Small Form Factor) power supplies are smaller than ATX power supplies, making them ideal for compact builds or mini-ITX motherboards. They come in a standard size of 125mm (width) x 63.5mm (height) x 100mm (depth). SFX power supplies typically provide between 250 watts and 600 watts of power.

Other Power Supply Form Factors

In addition to ATX and SFX power supplies, there are a number of other power supply form factors available. These include:

• BTX (Balanced Technology Extended): BTX power supplies are designed for use with BTX motherboards. They come in a standard size of 244mm (width) x 125mm (height) x 130mm (depth).
• CFX (Compact Form Factor): CFX power supplies are similar in size to SFX power supplies, but they are designed for use with CFX motherboards. They come in a standard size of 130mm (width) x 51mm (height) x 100mm (depth).
• TFX (Thin Form Factor): TFX power supplies are designed for use in slim desktop computers. They come in a standard size of 175mm (width) x 85mm (height) x 65mm (depth).

How to Choose the Right Power Supply Size

When choosing a power supply, the first thing you need to do is determine the size that you need. This will depend on the size of your case and the components that you are using. If you are using a standard ATX case, then you will need an ATX power supply. If you are using a compact case or a mini-ITX motherboard, then you will need an SFX power supply.

Once you have determined the size of power supply that you need, you can start to考虑the different power options available. The amount of power that you need will depend on the components that you are using. If you are using a high-performance graphics card or multiple hard drives, then you will need a power supply with a higher wattage.

Conclusion

Choosing the right power supply is an important part of building or upgrading a computer. By following the tips in this article, you can choose the perfect power supply for your needs.

Tables

Table 1: Power Supply Dimensions

Table 2: Power Supply Wattage

Table 3: Power Supply Features

Table 4: Common Mistakes to Avoid