Smallest ATX Cases of 2020 – Complete Review

Not everyone who loves to play PC games wants to have a fancy set up or likes to spend a massive amount of money on setting up huge desktops and system units. If you have your eyes set on an ATX motherboard and now you are looking for a case that will be perfect for you, then you are in the right place.

Comparison Chart of the Best Smallest ATX Cases


Cooler Master HAF XB EVO

  • Has two durable trifle fans in the front
  • Easily supports up to 4 HDDs or SSDs
  • Features rigid handles for ease of carrying
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Corsair CC-9011030

  • It includes three high-performance air series
  • Comes with tons of expansion room for cooling
  • Equipped with the dual-chamber direct airflow path
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Cooler Master 3.1 Matx Tower

  • Best for the money
  • Comes with customizable trim colors
  • The full black coating gives it a fancy look
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Thermaltake CA-1L2-00S1WN-00

  • Smallest Micro ATX case
  • Has one 200mm pre-installed fan
  • Comes with interchangeable panel design
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Corsair Carbide Clear 400C

  • Smallest full ATX
  • Features an all-steel exterior
  • Window panel is hinged and latched
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What is an ATX Case and What Does ATX Stand For?

ATX stands for "Advanced Technology Extended." ATX is a motherboard specification that highlights some essential components of the motherboard, such as dimensions of a motherboard, connection ports, I/O ports, and power supply ports. Usually, a computer case is also known as computer chassis. It contains most parts of a computer or system unit. The term ATX case means that a particular case is specifically designed to fit the components of an ATX motherboard. 

If you are using an ATX motherboard, then you should pick an ATX case. For gamers and computer users who need a small nook for their computers, they should go over for the smallest ATX cases.

What Are ATX Case Sizes?

In technical terms, PC cases are usually referred to as three form factors: ATX, Micro-ATX, and Mini-ITX. Depending on the size and dimensions of the gadgets placed inside your system unit, you must choose an ATX case. A standard ATX case is 12 by 9.6 inches, and a Micro-ATX comes in the size of 9.6 by 9.6 inches.

Meanwhile, the Mini-ITX measures to be of 6.7 inches square in size. When you are choosing a case for your system, you must know that the case for a larger motherboard would be relatively more significant in size as compared to the ATX case for a smaller motherboard.

Characteristics of Our Favorite ATX Cases

To make this hunt easy for you, we have shared someone the common characteristics that are found in some of the best ATX cases.


The computer market is full of some of the great PC cases. Make sure the one that you are getting falls under your budget. Some of the ATX cases that we are mentioning here are easily affordable.

Tool-less Design

Another characteristic of one of our favorite ATX cases is tool-less design. With the advancement in technology, it is better to invest in an ATX case that does not require a screwdriver. With a couple of pushbuttons, you would be able to fix the case over your motherboard or system unit more easily.

Cable Management

If unruly cables worry you, then you need a case that keeps all of the cables well-maintained. The best thing to do is to look-out for ATX cases with cable cutouts. Some of the cases have a single giant hole punched in the tray. Meanwhile, some of the cases have rubber grommets allowing the user to keep all unnecessary cables out of place.

Quick Take - Best Smallest ATX Cases

Before we go any further, here are the best smallest ATX cases:

1. Cooler Master HAF XB EVO
2. Corsair CC-9011030
3. Cooler Master 3.1 Matx Tower

Review of the Best Smallest ATX Cases

Here we are reviewing some of the very best, high-quality ATX cases. Go over their main features and pros and cons to make a final decision regarding a case for your system unit.

Cooler Master HAF XB EVO - High Air Flow...


  • Comes with X dock slots in front
  • Has dual USB 3.0 super-speed ports
  • The case can be easily transformed into a test bench
  • Easily supports a CPU tower cooler up to 180 millimeters tall
  • The motherboard can be easily removed to install and remove components


  • Is a bit bulky
  • Might be pricier than other units

What Recent Buyers Report

Most of the recent buyers are happy with this case. One of its buyers said that this case offers a unique design, has a different cube feel to it, and its handles, aids in moving this around. Another buyer is excited by the fact that it has two swappable drive bays.  

Why it Stands Out to Us

It stands out to us because it is designed in a perfect way to enhance the airflow. Here the fans are packed strategically to provide for any hardware component that needs perfect cooling to work perfectly. It's unique and thoughtful design makes it stand out to us. 

Who Will Use This Most

If your computer use is more than average, then you need to get your hands on this case as this comes with a remarkable air cooling system that will ensure that your computer does not overheat. Those computer enthusiasts who are looking for a sleek design should benefit from this motherboard. 

Bottom Line

Lastly, this piece has optimal card length, cooler height, and also comes with two durable XtraFlo fans for powerful airflow, and it is also very easy to install. So what are you waiting for? If you think your computer needs an upgrade, then consider this a sign and get your hands on this system.  

Corsair CC-9011030-WW Carbide Series Air...


  • Equipped with front dust filter
  • Comes with full-sized panel window
  • Has rubber grommets for cable routing
  • The spacing design offers loads of volume
  • Has a maximum length of approximately twelve inches


  • The filter might rattle with vibration 

What Recent Buyers Report

A huge lot of recent buyers are excited about its built. One of the buyers said that he is happy with its cable management, windows, fan filters, optimal design, quick-release HD bays, and multiple other features. Another buyer said that this built of this piece fits perfectly with his motherboard, and he is happy that he choose this product.

Why it Stands Out to Us

The reason why this product stands out to us because it is ideal for advanced air cooling and water cooling. You can easily mount this up to six to five fans and a radiator on the front of the panel. Plus, it's innovative cable routing system gives more options for getting rid of all the tubing and everything. Overall, this product satisfies its users. 

Who Will Use This Most

If you are looking for a fast, neat, and satisfying build, then you need your hands on this particular item. Moreover, if you want to hide away your cables perfectly, then this is the right case for that purpose. So, if you think you can benefit from the perks mentioned above, then this case is the right fit for you.  

Bottom Line

It offers tool-free PCI-E and storage installation settings, hence giving the user the satisfaction of built. Showcase all of your effort through the flush mount-size window. If you need something similar to this case, then start saving up some money. This case could be yours in no time.

Best for the Money::
Cooler Master 3.1 Max Tower

Cooler Master MCW-L3B3-KANN-01 MasterBox...


  • Has a transparent side panel
  • Easily supports up to three fans
  • Also has a water cooling system
  • Is easily affordable by most of the users
  • Cable routing is possible behind the motherboard


What Recent Buyers Report

One of the recent buyers appreciated the fact that the side panel is dimmed, which means you can't see what's going on inside, especially when you have LED. Another buyer is extremely happy with the airflow of the system, as it keeps the system pretty cool and airy.

Why it Stands Out to Us

One of the many reasons that this case stands out to us is that this case doesn’t have a high price tag attached to it. It is easier to purchase as compared to the rest of the models. Plus, the very fact that it comes with the PSU dust filter makes it worth mentioning. Overall it has all the important characteristics making it a nice pick. 

Who Will Use This Most

For those who are looking for a fancy, efficient, high-quality case, then this could be the one for you. Moreover, if you are not willing to spend a huge amount of money on a case for your motherboard or system unit, then you should consider this model as your option. 

Bottom Line

Beautiful design, adequate space, nice built, and most importantly, not that expensive, this is one of the economical cases on our list. If you are satisfied with the pros and cons of this model and need to update your computer table, then we reckon you must consider this as your option. 

Smallest Micro ATX Case:
Thermaltake CA-1L2-00S1WN-00

Thermaltake Level 20 VT Tempered Glass...


  • Radiator mounting is easy
  • Multiple ports for USB connection
  • Provides easy access to the components
  • Cooling with tempered glass is more efficient
  • Allows you to change the configuration as you please


  • The front panel might come off 

What Recent Buyers Report

Some buyer reports tell us that they chose this model because it was easy to stack and install, and he was very happy with the assembly of that case. Another buyer said that he was glad that he found this case at such an affordable price. Overall, people are saying positive things about this product.  

Why it Stands Out to Us

The most distinctive thing about this unit is that it comes with multiple ports. It supports up to ATX motherboard, and one can easily attach multiple ports to the system. Plus, this comes with two different chambers: one is for motherboards and PCIe component and lower chamber for PSU and drives bays. 

Who Will Use This Most

For those who want a case with two chambers, then this is the best case for you. Moreover, computer geeks who love tool-free design would benefit from this computer from a lot. It offers a lot of flexibility to its users, so if you are looking for these features, then this the perfect case for you. 

Bottom Line

In conclusion, if you want to take advantage of two-chamber design, tool-less drive bay design, speedy transmission, advanced ventilation, big possibilities, small footprint case, then this product is your safest bet. So, start saving your money and get your hands on this product. Bring some organization in your computer system. 

Smallest Full ATX Case:

CORSAIR CARBIDE 400C Compact Mid-Tower...


  • Is very easy to clean
  • Comes with two AF fans
  • Is capable of liquid cooling 
  • Is very durable and reliable
  • Has a sleek and sophisticated design


  • Might make some noise if not placed properly 

What Recent Buyers Report

This product’s buyers said that they were looking for a design that is not all shimmery with LEDs and were glad that they found this model. Another buyer said that the cable management on this model was a piece of cake. Most of its buyers are recommending this case to other computer users. 

Why it Stands Out to Us

You can easily access your components with a single touch because of its easily hinged and latched window panel, and when the window is closed, you can easily see what is on the inside. It's beautiful and sleek design is the reason it stands out to us. Plus, this ax is very easy to build. 

Who Will Use This Most

In case you like to keep your computer neat and clean, then this would be a perfect pick for you. You can easily place dust filters at the top and the bottom, and you won't have to sieve more than minute to Getty's of rust from your system. Plus, if you are looking for a case that is capable of liquid cooling, then this product should be your pick.

Bottom Line

Overall, this case has everything that is must in an outstanding case. From sleek design to remarkable operational efficiency, it has everything. So, if you are satisfied with its pros and cons and main features, then you need this case in your room. Make a wise decision after looking at each and every factor.

What Do I Need To Know Before Buying?

One can’t just simply buy an ATX case without considering some of the factors. You have to consider your budget, dimensions of your PC, and many other factors. To make this selection easy for you, we have listed some of the important factors that you must consider before buying a case.


Research the manufacturer of your case and verify its credibility and validity. Have a look at the reviews given by the users and then choose the one that's getting the best reviews. Since this is an item that can't be replaced daily so you must consider its quality. 


Make sure it's serving the purpose. It's a perfect fit for your computer, and it is an appropriate portal for the cables. If your case doesn't fit perfectly with your computer, then it doesn't serve the purpose. These cases come in a variety of sizes, get your computer measurements, and choose the case accordingly.


Multiple cases are available in the market, so you choose whichever one you please. But remember, don't compromise on the quality. Just because you are getting an expensive motherboard case doesn’t mean it is of high-quality. Keep all of these factors in mind and choose the one that is budget-friendly, high-quality, easy to fix, and reliable. 


Some of the very best ATX cases are in front of you now. Carefully go over their main features, pros, and cons and choose the one that compliments your motherboard and processing unit. Add some flair to your gaming nook by investing in a fancy, high-quality computer case. 

People Also Ask

Even if you are clear regarding which case you are going to buy, you still might have some questions regarding choosing the very best ATX case or some questions regarding the properties of the best cases. We have made a shortlist of some of the frequently asked questions.

Can an ATX Motherboard Fit in a Micro ATX Case?

A micro ATX motherboard can easily fit in a micro ATX case. The only downside of this will be that either your motherboard case will be too loose or too tight. So, it is better to have an idea about the fittings of your case and the dimensions of your motherboard.

What is the Difference Between ATX and Micro ATX

The main difference between ATX and micro ATX is their form factor. In simpler words, their size. Generally, ATX has a rectangular board measuring, and that is usually 305mm. On the other hand, micro ATX comes in more of a square shape, roughly measuring up to 244mm. You must choose as per your needs.

Can ATX Fit Micro ATX Case?

If you are only concerned about fitting, then it will fit easily. But if you are one of those people who want everything perfect to its last core, then it might bother you that the casing will be a little off. Pay attention to the dimensions and sizes, and you will find a perfect fit. 

Is ATX Better Than Micro ATX?

To answer your question shortly and honestly, Micro ATX is the best choice as far as cases are concerned. If you are looking for a compact PC, only and only then, go for the mini version. On the other hand, if you are looking for more PCIe slots, then better go with the ATX version. It all comes down to your needs and requirements. 

A Micro-ATX Motherboard Will Fit Into a Case That Follows What Minimum Standard?

We reckon that one of the most important requirements is that you can make sure that the ports of the case that you are buying and in synchronization with all the cables and wires that are important to attach with your motherboard and system unit. If this is sorted out, the rest will fall into place.

What Size is ATX?

If you are asking about a general and mostly used ATX, then a normal ATX motherboard is twelve inches wide and approximately nine inches deep. But you might find variance in sizes to a certain extent as well. It is advised to do thorough research before settling on one case or even motherboard. 

Which is Smaller Micro ATX or Mini ITX?

Mini-ITX is both short in height and length when compared to Micro ATX. You can choose the one that is best suited to your dimensions. Most of the medium to smallest size cases will easily accommodate normal to small size motherboards. This is also one of the advantages of these cases in particular. 

4 thoughts on “Smallest ATX Cases of 2020 – Complete Review”

  1. Thanks for your article “The Smallest ATX Case: Best SLIM and Compact ATX Cases Reviewed”. I’ve been looking for a case with a length of 16 inches or less (front to back) that would hold a full size ATX motherboard. The RIOTORO CR1080 is exactly what I’ve been looking for. They have a new version of it, the RIOTORO CR1088, that has some nice improvements including RGB lighting. I am planning to buy that version on Amazon. Here is the link:

    Thanks again!


  2. Thank you for the article. I currently have the HAF featured here. I was googling, because I found it took big. I’m moving it around much, so I love the handles on it, but it’s too big. I’m running a 1080 (non-ti), two ssd’s and a single hdd in it. And I think apart from the psu, everything could’ve fit on the upper deck, so there ought to be a case that’s just above half as big. You don’t happen to know about any do you?
    (might end up designing my own)


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