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Difference between ITX and ATX

Difference between ITX and ATX

Standard computer cases come in two main sizes: ITX and ATX. But what are the differences between them, and which one is right for you? In this article, we’ll take a look at the pros and cons of each size to help you decide.

What is ITX?

ITX is a type of computer chassis that is smaller than a mid-tower case, making it ideal for use in small spaces. ITX motherboards are also typically smaller than their ATX counterparts, which helps to further save space. In addition, ITX cases often have fewer drive bays and expansion slots than larger cases, but they can still support a full-sized power supply, optical drive, and hard drive. ITX systems are typically used in home theater PCs or office computers where space is limited. However, they can also be used in gaming PCs, though gamers may need to sacrifice some expandability in order to achieve a smaller footprint.

What is ATX?

ATX is a type of power supply used in computer systems. ATX supplies more power to the motherboard than other types of power supplies, which makes it ideal for use in high-end gaming PCs and servers. ATX power supplies also have more connectors than other types of power supplies, which allows for more flexibility when connecting components. ATX is the most common type of power supply used in desktop computers, and it is also available in a variety of sizes to accommodate different form factors.

Difference between ITX and ATX

ITX and ATX are two different form factors used in computer cases. ITX is the smaller of the two and typically measures 6.7″ x 6.7″. ATX is the larger form factor, and typically measures 12″ x 9.6″. ITX motherboards usually have fewer expansion slots than ATX motherboards and are typically limited to one or two PCIe slots. ATX motherboards, on the other hand, usually have four or more PCIe slots. ITX cases are also generally shorter than ATX cases, which can make them more difficult to work with when it comes to installing components. However, ITX cases often offer better airflow than ATX cases, which can be beneficial for cooling. Ultimately, the decision of which form factor to use depends on the needs of the individual user.


In conclusion, ATX is the most popular motherboard form factor for desktop computers because it offers more space and flexibility than ITX. However, there are some benefits to using ITX motherboards in certain situations. If you’re building a small form factor computer or if you need a board that can fit into a tight space, ITX may be the better option.

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