What are the main differences between ATX, microATX, and mini-ITX motherboards?

1 ATX Motherboards

ATX stands for Advanced Technology Extended, and it is the most common and standard motherboard size for desktop computers. ATX motherboards measure 12 x 9.6 inches, and they usually have seven expansion slots, four or more memory slots, and multiple ports and connectors for various peripherals. ATX motherboards offer the most flexibility and upgradeability, as they can accommodate larger and more powerful components, such as full-sized graphics cards, multiple storage drives, and extra cooling fans. However, ATX motherboards also require larger and heavier cases, and they consume more power and generate more heat than smaller motherboards.

2 microATX Motherboards

microATX is a smaller version of ATX, and it measures 9.6 x 9.6 inches. microATX motherboards have four expansion slots, two or four memory slots, and fewer ports and connectors than ATX motherboards. microATX motherboards are designed to fit in smaller and more compact cases, and they are more energy-efficient and less noisy than ATX motherboards. microATX motherboards are suitable for budget-friendly and mid-range builds, as they can still support most mainstream components, such as dual-slot graphics cards, multiple storage drives, and adequate cooling fans. However, microATX motherboards have less room for customization and expansion, and they may have compatibility issues with some high-end or oversized components.

3 mini-ITX Motherboards

mini-ITX is the smallest type of motherboard, and it measures 6.7 x 6.7 inches. mini-ITX motherboards have only one expansion slot, two memory slots, and a limited number of ports and connectors. mini-ITX motherboards are designed to fit in the smallest and most portable cases, and they are ideal for low-power and low-noise builds, such as home theater PCs, gaming consoles, or media servers. mini-ITX motherboards are also very easy to install and transport, as they have fewer cables and screws to deal with. However, mini-ITX motherboards have the most restrictions and trade-offs, as they can only support low-profile or integrated graphics cards, single storage drives, and minimal cooling fans. Moreover, mini-ITX motherboards are often more expensive and less available than larger motherboards.

4 Here’s what else to consider

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