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What is a Micro ATX Motherboard? | All You Need To Know

A micro ATX motherboard is a smaller version of the standard ATX motherboard that can still support the same components. It’s a great choice for those looking for a compact build without sacrificing too much functionality.

If you’re building your computer, then you need to know about micro ATX motherboards. These smaller-than-standard motherboards are perfect for compact builds, and they come with a whole bunch of benefits that you won’t get with larger options.

ATX motherboard slots

For starters, micro ATX motherboards are cheaper than their larger counterparts. That’s great news for anyone who’s on a budget but still wants a powerful PC. Plus, they’re more energy efficient, so you’ll save money on your power bill in the long run. And don’t worry about sacrificing performance, because micro ATX motherboards are still capable of running the latest and greatest CPUs and GPUs.

But the best thing about micro ATX motherboards? They’re just so darn cute. Seriously, they’re like the chihuahuas of the motherboard world. So if you’re looking to build a PC that’s small, affordable, and adorable, then a micro ATX motherboard is the way to go.

What are Micro ATX motherboards used for?

motherboard heatsink and slot

One of the most common uses is for budget gaming builds. Micro ATX motherboards can support the latest CPUs and GPUs, which means you can still get great performance in games without breaking the bank. Plus, with their smaller form factor, they’re great for LAN parties or taking your rig on the go.

But it’s not just gamers who can benefit from a Micro ATX motherboard. They’re also great for home theater PCs (HTPCs). With their compact size, they can fit in tight spaces, like a media center cabinet, and still deliver powerful performance for streaming and other multimedia tasks.

Another great use for Micro ATX motherboards is for office and production builds. If you need a computer for work, but don’t have a lot of desk space, a Micro ATX motherboard can save the day. They’re small enough to fit in cramped cubicles or on top of a crowded desk, but still powerful enough to handle demanding workloads.

So, what makes Micro ATX motherboards so great? For one, they’re more affordable than their full-sized counterparts. Since they’re smaller and have fewer components, they’re generally less expensive to produce, which translates to a lower price for the end user. Plus, their compact size means they use less power, which can save you money on your energy bill in the long run.

But it’s not all sunshine and rainbows with Micro ATX motherboards. They do have some limitations, namely in terms of expandability. With fewer PCIe slots and DIMM slots, you may not be able to add as many peripherals or RAM as you would with a full-sized ATX motherboard. However, for most users, this won’t be a problem.

What is the difference between a micro ATX and ATX motherboard?

micro ATX and ATX motherboard

Let’s start with the basics. The size of a motherboard determines the number of components it can accommodate. A micro ATX motherboard is smaller than an ATX motherboard, measuring 9.6 inches by 9.6 inches, while an ATX motherboard measures 12 inches by 9.6 inches. This size difference impacts the number of expansion slots, ports, and other features you can have on your motherboard.

One of the biggest advantages of an ATX motherboard is the additional expansion slots, which means you can add more components such as graphic cards, sound cards, and network cards. It’s an excellent choice for gamers and content creators who need more processing power and customization options. On the other hand, a micro ATX motherboard may have fewer expansion slots but is still powerful enough to run most applications and is ideal for those looking for a compact and affordable option.

Another difference between the two motherboards is the power consumption. An ATX motherboard typically has more power-hungry components and may require a larger power supply to support it. On the other hand, a micro ATX motherboard is designed to be energy efficient and can run on a smaller power supply, making it a better choice for those who want to save on their electricity bills.

When it comes to the price, a micro ATX motherboard is usually less expensive than an ATX motherboard due to its smaller size and fewer features. However, it’s important to note that the price can vary depending on the brand, features, and specifications.

What is the Micro ATX motherboard size?

pc motherboard wires

Micro ATX motherboards measure 9.6 inches by 9.6 inches (244mm x 244mm), which is a little less than the 12 inches by 9.6 inches (305mm x 244mm) of the standard ATX motherboard. This smaller size can come in handy if you’re building a compact PC, or if you want to save some money on a case that doesn’t require the larger form factor. It also means you’ll have fewer expansion slots, with most Micro ATX boards having only two to four instead of the six to seven on a standard ATX board.

But don’t let the smaller size fool you; Micro ATX motherboards can still handle most tasks with ease. They’re compatible with the same CPUs, memory, and other components as their larger counterparts, and can support a variety of graphics cards, including some high-end models. Micro ATX motherboards have become more popular in recent years, as manufacturers have added more features and capabilities to them.

One of the best things about Micro ATX motherboards is their versatility. You can use them to build a variety of systems, from budget office PCs to high-performance gaming rigs. They’re also great for HTPCs (Home Theater PCs), which are small, quiet computers designed to stream media content to your TV or other devices. With a Micro ATX motherboard, you can build a powerful HTPC that’s both compact and affordable.

Another advantage of the Micro ATX form factor is that it’s widely available. Many of the major motherboard manufacturers, such as ASUS, MSI, and Gigabyte, offer a wide range of Micro ATX options. This means you can choose from a variety of features, such as built-in Wi-Fi, multiple M.2 slots, and RGB lighting, depending on your needs and budget.

How much RAM can a micro ATX hold?

pc computer ram random access memory

Well, it depends on the specific motherboard you have. Some micro ATX motherboards have only two RAM slots, while others have four. Additionally, the amount of RAM each slot can hold also depends on the motherboard. Most modern micro ATX motherboards can hold up to 64GB of RAM, but some can go even higher.

It’s worth noting that the amount of RAM your system can handle also depends on your CPU and operating system. For example, if you’re running a 32-bit version of Windows, you won’t be able to use more than 4GB of RAM, regardless of how much your motherboard can handle. So, it’s essential to ensure that your hardware and software can support the amount of RAM you plan to use.

Another factor to consider when choosing RAM for your micro ATX motherboard is the speed of the RAM. Different motherboards support different RAM speeds, and using faster RAM can provide a noticeable performance boost. However, keep in mind that faster RAM can also be more expensive.

What are the advantages and disadvantages of Micro ATX?

motherboard processor cpu socket and slot

Advantages of Micro ATX

Smaller Size

One of the most obvious advantages of Micro ATX is its smaller size. Compared to traditional ATX motherboards, Micro ATX boards are typically more compact and take up less space in your computer case. This can be especially helpful if you’re building a smaller form-factor PC or if you have limited space in your home or office.

Lower Cost

In general, Micro ATX motherboards are less expensive than their ATX counterparts. This can be a significant advantage if you’re on a budget or if you’re building a PC for a specific purpose, such as a home theater PC or a media server.


Another advantage of Micro ATX is its compatibility with a wide range of computer components. Micro ATX motherboards typically have the same CPU and RAM compatibility as larger ATX boards, so you can still use the latest processors and memory modules.

Disadvantages of Micro ATX

Limited Expansion

One of the biggest disadvantages of Micro ATX is its limited expansion options. Due to their smaller size, Micro ATX motherboards typically have fewer expansion slots than their ATX counterparts. This means you may not be able to add as many PCIe devices, such as graphics cards or sound cards.

Limited Overclocking Potential

If you’re an overclocking enthusiast, you may be disappointed to learn that Micro ATX motherboards typically have less robust power delivery systems than larger ATX boards. This can limit your ability to push your CPU to its limits and get the most performance out of your system.

Less Aesthetically Pleasing

Okay, this one might not be a huge deal for everyone, but Micro ATX motherboards can sometimes look a bit cramped and cluttered. If you’re someone who takes pride in the appearance of your computer build, you may be disappointed with the limited space and crowded layout of a Micro ATX board.

Does Micro ATX need a different power supply?

motherboard power supply

Generally speaking, the power supply for a Micro ATX is the same as that for a regular ATX motherboard. It’s not that a Micro ATX needs a different power supply; it’s that the power supply needs to be compatible with the Micro ATX form factor.

However, there are some differences between a Micro ATX power supply and a regular ATX power supply. A Micro ATX power supply usually has a lower wattage and fewer connectors than a regular ATX power supply. This is because Micro ATX motherboards typically have fewer expansion slots and therefore require less power.

So, while a Micro ATX doesn’t necessarily need a different power supply, you should make sure the power supply you choose is compatible with the Micro ATX form factor and has the appropriate wattage and connectors for your specific Micro ATX motherboard.

It’s also important to note that there are different types of power supplies, such as modular and non-modular. Modular power supplies have detachable cables, which can be convenient if you’re trying to manage cable clutter in a small Micro ATX case.

What is Micro ATX?

motherboard heatsink

Micro ATX (sometimes referred to as mATX) is a motherboard form factor that measures 9.6 x 9.6 inches. It’s a smaller version of the standard ATX (Advanced Technology eXtended) form factor, which measures 12 x 9.6 inches. Despite its diminutive size, Micro ATX can support many of the same components and features as its larger counterpart.

Why Micro ATX?

There are many benefits to choosing Micro ATX for your next build. First and foremost, it’s smaller and more compact than a full-size ATX build. This means you can build a powerful PC without taking up as much space. Micro ATX cases also tend to be less expensive than full-size cases, which can save you some cash.

Micro ATX motherboards also typically have fewer expansion slots than full-size ATX motherboards, which can be a good thing. If you don’t need a ton of extra slots for things like multiple graphics cards or sound cards, then a Micro ATX board can save you some money and simplify your build.

What can Micro ATX do?

Despite its smaller size, Micro ATX can still pack a punch when it comes to performance. Most Micro ATX motherboards support the latest Intel and AMD processors, as well as high-speed RAM and PCIe NVMe SSDs. You can even build a Micro ATX gaming rig that can handle the latest titles with ease.

One thing to keep in mind is that Micro ATX motherboards may not have as many features as full-size ATX motherboards. For example, you may only get two RAM slots instead of four, or fewer USB ports. However, this is a small tradeoff for the compact size and affordability of Micro ATX.

Micro ATX is a great option for anyone who wants to build a compact yet powerful PC. It’s smaller, less expensive, and simpler than a full-size ATX build, without sacrificing too much in terms of performance. Plus, it’s just fun to say “mATX” instead of “Micro ATX.” So what are you waiting for? Build your Micro ATX PC today and join the cool kids club.

What are the benefits of a Micro ATX PC?

motherboard processor cpu socket

Micro ATX PCs are significantly smaller than standard ATX PCs. They take up less space on your desk and are perfect for those with limited space. They’re so small that they can even be used as HTPCs (Home Theater Personal Computers), which means that you can watch your favorite movies and TV shows on the big screen without having to invest in an expensive media player.

Another benefit of a Micro ATX PC is that it’s generally more affordable than a standard ATX PC. This is because Micro ATX motherboards are cheaper to produce and they require less expensive components. If you’re on a tight budget, then a Micro ATX PC might be the perfect option for you.

One of the coolest things about Micro ATX PCs is that they’re highly customizable. You can easily swap out components as needed, which makes them perfect for gamers who want to upgrade their graphics card or add more RAM. They’re also great for those who need a computer for specific tasks, such as video editing or 3D rendering.

If you’re worried that a Micro ATX PC won’t be as powerful as a standard ATX PC, then you can put your mind at ease. Micro ATX motherboards are just as powerful as their larger counterparts. They can accommodate the latest processors and graphics cards, and they can handle multiple hard drives and other storage devices.

Another benefit of a Micro ATX PC is that it’s generally easier to build than a standard ATX PC. This is because the smaller form factor makes it easier to install components and run cables. If you’re new to building computers, then a Micro ATX PC might be a good place to start.

Features of a Micro ATX Motherboard

motherboard CMOS headsink

Micro ATX motherboards are smaller than their full-size ATX counterparts, measuring 9.6 inches by 9.6 inches. Don’t let the size fool you, though, as these motherboards pack a punch. They can accommodate up to four RAM slots, two PCIe x16 slots for graphics cards, and multiple SATA connectors for storage drives.

Another key feature of a Micro ATX motherboard is its expansion slots. These motherboards typically come with at least one PCIe x16 slot for a graphics card and one or two PCIe x1 slots for other expansion cards, such as sound cards or Wi-Fi adapters. Some Micro ATX motherboards even have M.2 slots for faster solid-state drives, which is a huge plus for gamers and creative professionals who need fast storage to keep up with demanding applications.

Compatibility with other computer components is another crucial factor to consider when choosing a motherboard. Micro ATX motherboards are compatible with most computer components, including CPUs from both Intel and AMD. They can support the latest generation of processors, including the AMD Ryzen and Intel Core i9. This makes them an excellent choice for building budget-friendly gaming PCs or compact workstations.

What’s more, Micro ATX motherboards are compatible with a wide range of cases. You can choose from a variety of small form factor cases that can accommodate Micro ATX motherboards, making it easy to build a compact yet powerful system that won’t take up too much desk space. Plus, smaller cases tend to be more portable, making them an excellent choice for LAN parties or transporting your PC between locations.

ATX motherboard cmos

First up, we have the ASUS ROG Strix B450-F Gaming. This motherboard is a favorite among gamers for its support of AMD Ryzen processors, its dual M.2 slots for high-speed storage, and its robust cooling capabilities. With support for up to 64GB of DDR4 memory and advanced RGB lighting controls, the ROG Strix B450-F Gaming is a great choice for those looking to build a high-performance gaming PC in a smaller form factor.

Next, we have the Gigabyte GA-A320M-S2H. This budget-friendly motherboard offers support for AMD Ryzen processors and up to 32GB of DDR4 memory. While it may not have all the bells and whistles of more expensive motherboards, it still offers plenty of features for those looking to build a basic PC or home office computer.

For those looking for a motherboard with Wi-Fi capabilities, the ASRock B450M/AC may be the way to go. This Micro ATX motherboard offers support for AMD Ryzen processors, up to 64GB of DDR4 memory, and dual M.2 slots for high-speed storage. It also comes equipped with Wi-Fi and Bluetooth capabilities, making it a great choice for those who want to eliminate the need for an additional Wi-Fi card.

Another great Micro ATX motherboard is the MSI B450M Mortar. This motherboard offers support for AMD Ryzen processors, up to 64GB of DDR4 memory, and dual M.2 slots for high-speed storage. It also boasts advanced RGB lighting controls, as well as support for MSI’s Mystic Light software, allowing for full customization of your PC’s lighting.

Finally, we have the ASRock X570M Pro4. This Micro ATX motherboard is a great choice for those looking to build a high-performance PC with support for the latest AMD Ryzen processors. With support for up to 128GB of DDR4 memory, dual M.2 slots, and advanced cooling capabilities, the X570M Pro4 is a great choice for those who want a compact PC that can handle anything they throw at it.


We’ve learned that a micro ATX motherboard is a compact yet mighty piece of hardware that can fit into small form factor cases without sacrificing performance. It’s like the Napoleon Bonaparte of motherboards, small in size but packed with power.

With its smaller form factor, the micro ATX motherboard is perfect for those looking to build a budget-friendly PC or a compact gaming rig without compromising on performance. Plus, with its compatibility with standard ATX cases and power supplies, you won’t have to break the bank to get your hands on this little powerhouse.

So whether you’re a casual gamer, a content creator, or a system builder looking to save some space, the micro ATX motherboard has got you covered. Its versatility and affordability make it a popular choice among PC enthusiasts, and with the right components, it can deliver top-notch performance that rivals larger and more expensive systems.

In summary, the micro ATX motherboard is a great option for anyone who wants to build a powerful PC without sacrificing space or breaking the bank. It may be small in size, but it’s big on performance, just like Danny DeVito or Kevin Hart. So, if you’re looking to build a compact, budget-friendly PC that packs a punch, the micro ATX motherboard is worth considering.


How do I know if my motherboard is Micro ATX?

To determine if your motherboard is Micro ATX, check its size and layout. Micro ATX motherboards typically measure 9.6 x 9.6 inches and have a square shape, with fewer expansion slots and ports than larger ATX boards.

How do I know my motherboard size?

To determine your motherboard’s size, you can check the documentation that came with your computer or physically inspect the board itself. Alternatively, you can use software tools such as CPU-Z to get detailed information about your motherboard’s size and other specifications. Knowing your motherboard’s size is crucial when upgrading or replacing components.

Can I use an ATX PSU for the mATX motherboard?

Yes, you can use an ATX PSU for an mATX motherboard. The main difference between the two is the size, but both have the same power specifications. However, be sure to check the power requirements of your components before choosing a PSU.

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