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Micro ATX (mATX)

pc

Micro ATX is a motherboard form factor measuring 244 mm x 244 mm (9.6 x 9.6 inches).

expanded

Micro ATX motherboards offer a compact solution with reduced size compared to standard ATX boards, while supporting up to four expansion slots. They are widely used in desktop PCs where moderate expandability is required, balancing cost-effectiveness and functionality in smaller cases.

examples

The ASUS Prime B550M-A (mATX) motherboard supports AMD Ryzen CPUs with up to 128 GB DDR4 RAM.

Commonly employed in mid-range gaming desktops where compact size is preferred along with support for modern CPUs and sufficient RAM capacity.

The Gigabyte B450M DS3H (mATX) features dual M.2 slots for NVMe SSDs and supports Ryzen processors.

Frequently used in budget-friendly builds that require adequate storage options and CPU support without needing extra PCIe slots.

related terms

Mini-ITX (ITX)
Mini-ITX is a compact motherboard standard measuring 170 mm × 170 mm (6.7 in × 6.7 in).
Advanced Technology eXtended (ATX)
ATX is a motherboard and power supply specification standard for personal computers.
Information Technology eXtended (ITX)
ITX is a motherboard form factor with a small size designed for compact PC builds.
Form factor
The physical size, shape, and configuration of a hardware component or device.
Slot
A slot is a connector on a motherboard used for installing and holding add-in cards.