Smallest ATX Cases for Best Compact PC Builds


By Jack

Update on

Smallest ATX Case

When building a PC setup, most users overlook the importance of a PC case.

All they are worried about is finding the best RAM, the best graphics cards, or the best motherboard.

And while all of these are surely important for your PC, you also need to find a compact case where you can house all these components.

PC components are getting smaller, so it only makes sense that you go for the smallest ATX case, which will not only be able to give you an aesthetic build but will also not take up all your space.

For a gamer or professional who needs to make peace with a small space, go through our article to find the best PC cases!

We have compiled our top picks for the best cases so that you can get the smallest ATX case without any hassle! Keep on reading.

A Brief Introduction to ATX Cases

Before you go ahead and purchase the smallest ATX case, let’s brush over a bit on what it exactly means.

ATX is an abbreviation for Advanced Technology extended.

It is a form factor or, more specifically, a motherboard specification that was first introduced by Intel back in the 90s.

An ATX case is nothing but simply a PC case that acts in accordance with the specifications of an ATX motherboard.

Note that before you buy the smallest ATX case, you must have a motherboard that complies with all the specifications of the case.

PS: if you are looking for the best cube computer cases for gamers, this guide is just for you.

Tips on Choosing the Best & Smallest ATX Case

While it is true that size becomes a major factor to consider when looking for the best smallest ATX case, it is not the only criterion that you should consider.

An ATX case essentially houses all your computer components.

Hence, you must buy something within which your PC parts will be able to work to their full power.

PC Parts:

The size of your PC parts and the size of the PC case go hand in hand.

If you have a small space that is compelling you to look for a small ATX case, then you must first look for components that complement the size of the case.

If you buy a large graphics card, your ATX case will not be able to accommodate that. Hence, purchase the PC parts accordingly.


Airflow is another important factor that you need to consider, especially when looking for the smallest ATX case.

Your PC case controls the temperature of the computer.

As a result, you must look for an ATX case with enough ventilation and adequate cooling as per your requirements.

If you happen to live in a very tropical area, cooling becomes a more important concern.

Make sure to purchase a case with more fans and a lot of airflows, especially if you have a tight case.


Buy an ATX case that appeals to you visually.

The case is going to become the face of the PC setup, and it’s all there is to look at when you are looking at your PC.

You could certainly go for something that is minimalistic and basic, or if you want something fancier, you could go for an ATX case that has LED lighting or side panels that are see-through.

The looks become more important when searching for the smallest ATX case. You want something compact and powerful yet equally stylish-looking.

Don’t worry; you will surely be able to find something from our list that matches your taste.


You must not ever overlook the budget. Your budget determines what kind of ATX case you can afford to go for.

Hence, before you start looking, research a bit on the range of prices when it comes to PC cases, and devise a budget according to your needs.

Top Picks for the Smallest ATX Case

Here, we have covered the basics you need to consider when looking for a PC case; it is time that you go through our list so that you can get the smallest ATX case for yourself.

Continue reading.

What is the Smallest Full-size ATX Case?

Case NameDimensionsWeight
Cooler Master HAF XB EVO17.4 x 13 x 16.7 inches18.1 pounds
Thermaltake Core G317.9 x 14.6 x 5.5 inches9.3 pounds
NZXT H51016.85 x 8.27 x 18.11 inches17.6 pounds

1. Cooler Master HAF XB EVO

Cooler Master HAF XB EVO

Cooler Master HAF XB EVO is the ideal PC case for you if you wish to perfectly control the ambient temperature of your PC. With numerous fans installed on each side, this PC case provides optimal cooling for every computer.

The heat-generating parts are strategically placed at the base, and consequently, hot air rises and leaves through the head of the PC case. This makes handling and carrying the case extremely easy.

Thanks to this design, temperatures remain low despite the fact that there is reduced overall free room internally than in a comparable-sized vertical chassis. Since this case has been specifically designed for circulation purposes, you can easily set it up in a small office or room, making it the best smallest ATX case.

Apart from its ventilation, another aspect that is a scene-stealer is its motherboard tray, which is removable. It lets you install and remove the motherboard with ease. It also has robust side handles, making it an extremely portable computer case.

We should think about the dust panels on the case too. The PC case features four dust panels to prevent dust from gathering. This greatly simplifies maintenance. Moreover, apart from ATX motherboards, this case can also house Mini-ITX and Micro-ATX boards.


  • Has 7 PCI expansion slots
  • Features 2 x 5.25″ and 4 x 2.5″/3.5″ bays
  • Front I/O Panel: 2 x USB 3.0, HD Audio In & Out
  • Supports ATX, Mini-ITX, and mATX
  • Come with two 120mm XtraFlo fans pre-installed at the front
  • Supports 1 x 200mm fan on top, 2 x 140mm or 2 x 120mm fans at the front, and 1 x 80mm or 2 x 120mm fans in the rear


  • Come with a detachable motherboard plate
  • Allows exceptional air circulation from every direction
  • Disk plates are simple to install and do not require any tools
  • Durable design
  • Contain enough space for personalization and additional components


  • Assembling is a little tricky
  • Take too much area
  • Not budget-friendly

2. Thermaltake Core G3

Thermaltake Core G3

If looks are important for you as the size of your PC case, then look no further than the Thermaltake Core G3. Featuring a sleek design and a compact build, this case can fit anywhere from a small desk to a small living room. All such features make this case the best and smallest ATX case.

Apart from its design and compact size, another aspect that makes it ideal for you is its ability to be set up either vertically or horizontally. This makes customization more fun and easy for users. The case also has a unique cooling system with a couple of fans of 120mm. This ensures that your PC doesn’t overheat when you are running intensive applications.

This case is specifically built for virtual gamers since it can house RTX GPUs uniformly in a compact build for both horizontal and vertical layouts. Moreover, this case can also house robust high-end components such as a 310 mm graphics card, a 110mm tower CPU cooler as well as two storage devices.

Apart from these features, there are also I/O connections as well as expandability choices to help you match the case with any equipment. This smallest ATX case is great for customized PC enthusiasts looking for a good balance of affordability and power.

Its numerous configurations allow for customization, making it easy to construct any type of setup with this low-cost option.


  • Supports 2 x 2.5″ or 2 x 3.5″ storage drives with HDD cage
  • Supports 12″ x 9.6″ (ATX), 9.6″ x 9.6″ (Micro ATX), and 6.7″ x 6.7″ (Mini ITX)
  • Handy Top-Front I/O with USB 2.0 x 2, USB 3.0 x 2, and HD Audio jacks
  • Two expansion slots
  • Support 2 x 120mm fans or a 240mm radiator in the front and a 120mm top fan
  • Compatible with up to NVIDIA Geforce GTX 1080/1070


  • Easy to carry
  • Cost-effective
  • Water cooling system present
  • The compact and portable layout
  • It can be installed in any desired orientation


  • No space for extra fans
  • The regular PSU is not compatible
  • Cord setup may be a challenge

3. NZXT H510


NZXT is a well-known company that manufactures a wide range of gaming-related products. If you are a gamer who wishes to challenge yourself, then the NZXT H510 is perfect for you.

Despite being the smallest ATX case, it has everything that you need, starting from tempered glass panels that allow for the viewing of inside parts and I/O connections to a cooling water system.

The minimalist and compact design complement any gaming configuration, and the one-piece construction make it easy to assemble on any level surface. Plus, the unique design of this casing makes the connection simple and quick. Apart from ATX motherboards, this case can also house Mini-ITX and Micro-ATX boards.

One of the best features of this case is easy cable management. The case comes with several routing channels as well as a kit with adjustable fasteners and ties. This allows users to connect wires without any issues.

One thing that we must say is that the brand offers a 2-year warranty with this case which is higher than what most brands offer.

Aside from these features, it also has Aer F120mm fans that ensure that your PC does not overheat when playing intense games. However, there is no exhaust fan on the top, which would have helped with more airflow. Regardless, this gaming enclosure is great for those looking to build a powerful system in a small area.


  • CPU Cooler Height: Up to 165 mm
  • Tempered Side Panel
  • GPU Length: Up to 381 mm
  • I/O Ports: 1 USB 3.1 Gen 2 Type-C port, 1 USB 3.1 Gen 1 Type-A
  • Motherboard Support: Up to ATX
  • PSU Size Support: Standard ATX PSU


  • Numerous dust filters
  • Simple cable management
  • I/O connection upgraded to USB Type-C
  • Customized coolant loops are supported


  • No exhaust fan on top
  • Little expensive

FAQs (Frequently Asked Questions)

  1. Q: Can I use a standard ATX motherboard in a smallest ATX case? A: Yes, most smallest ATX cases are designed to support standard ATX motherboards. Just ensure the case’s specifications mention compatibility with ATX motherboards.
  2. Q: Are smallest ATX cases suitable for gaming builds? A: Absolutely! Smallest ATX cases offer ample space for high-performance graphics cards and cooling solutions, making them ideal for gaming builds.
  3. Q: Can I overclock my components in a smallest ATX case? A: Yes, you can overclock your components in a smallest ATX case. However, ensure proper cooling and monitor temperatures to prevent overheating.
  4. Q: Do smallest ATX cases come with pre-installed fans? A: It varies from case to case. Some smallest ATX cases come with pre-installed fans, while others may require you to purchase fans separately.
  5. Q: Are smallest ATX cases more expensive than larger cases? A: Smallest ATX cases can vary in price depending on the brand, features, and build quality. However, they are generally priced competitively compared to larger cases.

Final Thoughts

There are a plethora of fantastic ATX PC cases available, but with so many options available, it may be nearly hard to select the ideal one.

That being stated, we believe we have prepared a list of some of the top selections so that you can buy the smallest ATX case for yourself!


Ten years of experience in information and computer technology. Passionate about electronic devices, smartphones, computers, and modern technology.