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These areMini-ITX,MicroATX,ATX, andE-ATX.

The most common motherboard size is ATX, which measures 12 x 9.6 inches.

MSI�s four available motherboard sizes

As a frame of reference, Mini-ITX is around two-thirds the size of an ATX motherboard.

Historically, the former was designed for lower power consumption and efficiency when compared to the more common sizes.

If so, maybe the silicon needs to be larger.

Motherboard size guide

It will ultimately depend on the use case.

Do you need more expansion slots?

Which motherboard should you buy?

Mini ITX vs MicroATX motherboard

Consider the chipset of the board for starters.

Will you use AMD’s AM4 or AM5 platform?

All four motherboard sizes support the latest and greatest of today’s processor technology, just in different ways.

ATX vs E-ATX motherboard

Compatibility is the most important factor above all.

The motherboard is the foundation of your whole machine, after all.

Gigabyte AM5 motherboard