Motherboard sizes explained There are four motherboard sizes available in 2025 from major manufacturers such as Asus, Gigabyte, and MSI, among others. These are Mini-ITX , MicroATX , ATX , and E-ATX .

For example: An absolute beast of a motherboard, the MSI MEG X670E ACE ($700) sports a trio of PCIe 5.0 slots, four M.2 slots under a heatsink, and a massive number of USB ports both on the rear ...

Motherboard Sizes: Understanding E-ATX, ATX, mATX, and mini-ITX. When building a PC, choosing the right motherboard size is crucial for ensuring compatibility, upgradability, and performance.

With motherboard sizes influencing the overall esthetics and expansion options of a PC, choosing the best parts for a proper gaming rig that is perfectly sized yet powerful is crucial. Different ...

What is and what does a motherboard do? The primary component of a computer is the motherboard (sometimes called the mainboard). The motherboard is the hub that is used to connect all of the ...

Unlike larger motherboards, the Mini-ITX and Micro ATX are both square-shaped, but the Micro ATX is a little larger, offering ...

ATX boards measure 305 by 244 millimeters, and PC parts and case sizes have largely standardized around them. That means they're perfect for powerful PC builds inside mid-sized and large towers.

Building a desktop PC, or upgrading an aging one? Here's all you need to know about choosing the right motherboard—plus, our top tested picks in boards for the latest AMD and Intel CPU platforms.

Motherboard sizes explained There are four motherboard sizes available in 2025 from major manufacturers such as Asus, Gigabyte, and MSI, among others. These are Mini-ITX , MicroATX , ATX , and E-ATX .