Are All Motherboards the Same Size

The motherboard is the most important computer component since other components such as RAM, graphics cards, storage devices, power supplies, etc., are connected to it. When it comes to purchasing a motherboard, most people become confused because different sizes, shapes, and models are available for purchase in the market. We’ve got asked a lot of times that are all motherboards the same size or they are different and that’s what we are going to discuss there.

If you plan to build a new PC, picking the right size motherboard will be one of the essential parts. A choice of the motherboard has a significant effect on the performance of your PC since different sizes of motherboards have other expansion slots and can handle different hardware types.

Are All Motherboards the Same Size?

There are different kinds of motherboards with different sizes and shapes available. In this article, we will discuss whether all motherboards are the same size or other; if they are different, what is the difference between their sizes.


The ATX stands for Advanced Technology Extended motherboard. The ATX motherboard is a great choice if you are planning to build a gaming PC. It is the most common motherboard design and it has dimensions of 12 × 9.6 (305 × 244 mm).

The ATX motherboards were first released in 1995. These motherboards feature four RAM slots, and each slot can hold up to 32 gigabytes of RAM. The ATX motherboards have more PCIe slots than micro and m-ATX motherboards. These motherboards provide great performance in every category, and the best thing about them is that you can overclock your processor without being damaged.

Extended ATX (EATX)

The EATX motherboards are larger in size than ATX motherboards. These motherboards are best for building powerful gaming PCs. These motherboards provide reliable and smooth performance.
The EATX motherboards have large dimensions, which makes them incompatible with small computer cases. The dimensions of these motherboards are 12 inches wide by 9.6 inches deep (305mm x 244mm).

EATX motherboards are an excellent choice for gamers who have a high budget and want to play games or do video editing, rendering, etc. Unfortunately, these motherboards are not for users with a low budget.


The XL-ATX motherboards are rare motherboards that are wider and taller in dimensions than ATX and EATX. The size of the XL-ATX motherboard is 13.58 x 10.31 in (345 x 262 mm). These motherboards are the best option for those who want motherboards for extreme gaming or overclock their components.

The majority of people are satisfied with ATX motherboards because they are not too big and average in size. The XL-ATX motherboards are expensive and maybe cost you more than 5x than the average size motherboard.

XL-ATX motherboards are a great choice if you’re looking for the highest overclocking and gaming performance. Otherwise, a normal ATX motherboard is fine.

Micro ATX (mATX)

A Micro ATX (mATX) motherboard is a smaller version of an ATX motherboard. There are not many differences between their sizes, but ATX motherboards are a few centimeters bigger than Micro ATX motherboards.

The Micro ATX (mATX) motherboards are a great choice for budget gamers. These motherboards have most of the same specifications as normal ATX motherboards but the only difference is their size. A microATX motherboard is a maximum size of 9.6 X 9.6 inches (244 × 244 mm).

The only drawback of these motherboards is that they don’t support multi GPUs. If you are considering buying this motherboard for multi-GPUs, then you should consider buying an ATX motherboard instead. These motherboards are affordable and most in-demand by many users all over the world.


The Mini ITX motherboards are the smallest motherboards that are available on the market. These motherboards are smaller than Micro ATX. There are only two RAM slots on Mini ITX boards, so you can only get 32GB of ram if you pair up 16x2GB ram sticks.

Generally, these motherboards are 6.7 inches in length and 6.7 inches in width, making them the smallest motherboards available. There are very few Mini ITX motherboards with a larger VRM section and more heatsinks.

The best thing i like about these motherboards is that they consume less power than ATX motherboards. They are smaller in size, so they will fit on any type of PC case. In Mini ITX motherboards, there is only one PCIe slot, so you can’t use more than one GPU at a time.


Nano ITX motherboards are smaller than Mini ITX motherboards. These motherboards were first released in 2003. These small motherboards consume very less power. The dimensions of these motherboards are 12 × 12 cm (4.7 × 4.7). These motherboards are specifically designed for small computers and other devices, such as PVRs and Smart TVs.


The Pico-ITX motherboard is the smallest form factor motherboard first launched in 2007 by VIA Technologies (Very Innovative Architecture Technologies). The Pico ITX motherboard measures 10 x 7.2 cm (3.9 x 2.8), which is half of the area of the Nano-ITX motherboard.

A Pico-ITX motherboard is often used in media center computers, car computers, and small home servers. There are components like RAM and Processors permanently installed on these motherboards which are not replaceable.

Conclusion of Are All Motherboards the Same Size

As I have explained about all the motherboard sizes above, you should have gained some knowledge about them after reading this article. Those looking for fair-price motherboards for gaming and overclocking should consider ATX motherboards. You can also choose from MicroATX and Mini-ITX motherboards if you are searching for a budget-friendly mobo. The Nano and Pico ITX motherboards are the smallest of all motherboards and are used in-car computers and Smart TV.