8 Best Smallest ATX Cases In 2021

Looking is the Best Smallest ATX Cases?. You are in the right place. Read on.

The best small ATX cases are the ones that have a variety of features. They should be able to accommodate your needs but also have room for customization. That way, you can ensure your system is running as efficiently as possible without taking up too much space or being too heavy.

 There are so many different sizes and shapes that you might not know where to start! This article will go over some of the best small form factor cases for ATX motherboards on the market today. These cases offer everything from stunning designs to great features like cable management, all in a compact package.

When looking for the best ATX computer case, it is important to consider a few things. First and foremost, make sure that it has enough room to fit your motherboard inside of it. This is not always an issue if you have a standard size motherboard but can be an issue if you have a small form factor or mini-ITX motherboard.

Secondly, look at the number of 5 1/4″ bays and 3 1/2″ bays that it offers so that you can connect all your storage devices to your PC.

Lastly, think about how much power supply wattage this particular case provides because some cases only offer 300 watts while others offer 600 watts or more! We’ll discuss all of these factors to help you make an informed decision about what’s right for you!

1. Cooler Master HAF XB EVO

The Cooler Master HAF XB EVO is a tower case with an aluminum exterior and plastic interior. Measuring at 656 x 233 x 600 mm, it offers plenty of space for your components.

The front panel has three 5.25″ drive bays, two 3.5″ drive bays, one 2.5″ drive bay, and four 120mm fans that are hidden behind the tinted window giving them the appearance of being illuminated by LED lights.

When turned on at night time which makes this case stand out from any other cases out there! The HAF XB EVO is designed with liquid cooling in mind and features an optimized layout that lets you put up to five radiators at different positions. It also has four 120mm fans pre-installed and can accommodate up to six more, giving plenty of airflow potential.

 It has all the features you would expect from a high-end enthusiast chassis, including top-notch cooling, water cooling support, modularity, and more.

This article will take an in-depth look at what makes this case so great! It has a large, tinted side panel window for easy viewing of your system’s internals and an LED front intake fan for excellent airflow.

The HAF XB EVO also comes with two 120mm fans in the rear exhaust position and one 140mm fan on the top panel that can be switched between high and low settings to suit your needs.

 The side panels can be removed and replaced with other panels, the motherboard tray has two sets of slots for different types of motherboards, and there are many more features that make this case stand out from the rest.

It’s an excellent option for someone looking for a high-quality product at an affordable price!

The best part about the HAF XB EVO is its color options! You can choose from black, white and red to suit your taste. If you’re looking for a new case but don’t know where to start, the Cooler Master HAF XB EVO is an excellent option! It is very large, which means it can accommodate even the largest video cards on the market today–up to 13 inches in length!

This monster features 10 expansion slots and four 5.25″ drive bays, and six 3.5″ drive bays (two tool-free). A few more highlights include two USB 2.0 ports upfront; one 120mm side fan; nine 140mm fans (eight in back, one top); five 120mm fans (four in back, one bottom). It has a ton of features, all the while looking cool with its design. I love this thing!


  • 2 durable trifle fans 
  • Supports a tower CPU coolers
  • Rigid carry handles on the side panels


  • No availability of spare parts

2. Corsair Carbide Air 540

The Corsair Carbide Air 540 is the latest chassis from the company, and it’s a stunner. I’m not going to lie; we were blown away when we first saw this case at Computex 2017 in Taipei.

The sleek design and clean lines set this chassis apart from any other that we’ve seen before. It also features an innovative cable management system that makes for easy installation of your hardware and components. If you’re looking for a new mid-tower gaming chassis, then you might want to consider picking up the Corsair Carbide Air 540!

 It comes with four fans and three dust filters to keep your system running cool and clean. The case has an ATX motherboard layout that accommodates most standard motherboards and power supplies. If you’re looking for a budget-friendly but sleek and stylish enclosure, this may be the right choice for you!

The case has two 140mm fans on the front panel to help keep your components cool during extended gaming sessions. This is perfect for playing games like Battlefield 1 or even something more casual like Minecraft with friends.

It has a beautiful design that will make your gaming rig stand out from the crowd, room to mount up to six fans or radiators, plenty of space inside for cables and drives, and it’s even got dust filters on the front and bottom.

It offers an impressive list of features for gamers and enthusiasts, including cable routing options, plenty of cooling flexibility, excellent cable management features, dust filters on all intakes (including the power supply), and compatibility with up to three radiators.

The exterior design is sleek and understated; there are no flashy LEDs here. If you’re looking for a high-end case that won’t break your budget, this might be just what you need!


  • Dual-chamber Direct Airflow Path design
  • Features 8 Case Expansion Slots
  • Full side panel window
  • Attractive Design


  • No Corsair Link Enabled
  • No screens below the hot-swap bays

3. Fractal Design Meshify C – Compact Computer Case

The Fractal Design Meshify C is an excellent choice for users who need a compact case with high airflow and advanced cooling features.

It has plenty of room to work inside and comes with two 140mm fans installed and space for more. The innovative design is lightweight and has ample room for all your PC components.

With the ability to hold both ATX and Micro-ATX motherboards, this chassis can fit any size building you are looking to create.

Along with plenty of cooling options – including 2 pre-installed fans – the Meshify C also includes stylish RGB lighting on the front panel, side panels, top cover, and rear I/O ports for an immersive gaming experience. 

 The mesh paneling on the front of the case allows for easy access to your motherboard, graphics card, and cooling solution.

You will also find that there are vents on each side of the case as well as at the rear, which allow for excellent airflow inside. This means that you can keep your system cool without adding any extra fans!


  • Streamlined high-airflow design
  • Performance and capacity of a larger tower in a compact mid-tower size
  • Angular mesh front panel maximizes air intake
  • Superior air cooling


  • No space for new AMD cards

4. SilverStone ML08 Slim

The Mini-ITX form factor is perfect for users who need a powerful performance in a small package. The SilverStone ML08 Slim Case is an excellent case with ample room to accommodate your needs, whether you are building a gaming rig or workstation.

This slim, compact design improves airflow and reduces the system’s footprint without sacrificing any of its capabilities. With options like tool-less drive bays and side panels, it couldn’t be easier to get your computer up and running quickly.

 It has many features that are perfect for today’s modern computer user, including support for up to two 3.5″ drives and four 2.5″ drives or SSDs, 7 expansion slots for installing graphics cards, sound cards, or other expansion cards, dual USB 3.0 ports on the front panel and more.

It is slim and sleek, with a great design that will make it stand out on your desk. The front panel has two USB 3.0 ports, one eSATA port, HD Audio jacks, and power/reset buttons to help you control all of your devices using only the front panel.

 The case measures 5.7 “H x 9” L x 13 “W and weighs only 6 lbs! It features two USB 3.0 ports with type A connectors, built-in dual fan controller, tool-free installation of all drives and components, four expansion slots with room to install CPU coolers up to 7 inches tall, and three 120mm fans pre-installed (front 80mm fan plus two rear 120mm fans).

This product has more than enough space inside for your high-end hardware while still being able to fit into small spaces.

 The case is made of aluminum, which provides excellent heat dissipation capabilities. With room for 1x 3.5,” HDD and 1x 2.5″ SSD or 1x 3.5″ HDD and 1x 3.5″ HDD/SSD combo, the SilverStone ML08 Slim Small Form Factor Computer Case has plenty of space to accommodate your storage needs.

This case features excellent cable management options, making your life easier when building or upgrading your computer system.

You will also find that this case has great airflow due to its slim design with no obstructions. Suppose you’re looking for an affordable solution that will fit any budget without sacrificing quality. In that case, the SilverStone ML08 Slim Small Form Factor Computer Case is just what you need.


  • Highest performance capability in super slim form factor
  • Support graphics card up to 13 inches
  • Mini-ITX motherboard & SFX PSU compatible
  • Tool-less drive cage design


  •  No support for extra fans

5. Corsair Carbide 400C

The Corsair Carbide 400C is the latest addition to their lineup of computer cases. Designed with gamers, enthusiasts, and overclocking in mind, this case looks sleek but offers plenty of space for powerful components.

The all-black design features a tempered glass side panel window so you can show off your build while keeping it cool and quiet inside. It also has an RGB LED strip that lets you customize your lighting or have some fun with colors.

This case features an ATX motherboard size and can house up to four 120mm fans or six 140mm fans (or both).

It has three 5.25″ bays that can fit optical drives or other 3.5″ devices, eight 2.5″ drive trays, and two USB 3.0 ports on the front panel for easy access to your peripherals without having to open the side door every time you want access to your storage devices.

The exterior of this chassis is made from steel, and the interior is lined with sound-dampening material, which helps reduce noise emissions by up to 30%. There are four expansion slots on the motherboard tray for installing graphics cards and seven PCI Express slots below it.

This makes it possible to install two dual-slot graphics cards at once, such as NVIDIA’s GeForce GTX 1080 Ti Founders Edition 11GB 11Gbps GDDR5X card. The Corsair Carbide 400C supports ATX, MicroATX, and Mini-ITX motherboards so that you can customize yours. 

It has excellent cooling, which helps keep your system running at peak performance. The dual 120mm front intake fans are designed to draw cool air over the hard drives and graphics card, while the single rear exhaust fan pushes heat out of your system.

This will help make sure you have a stable frame rate during intense gaming sessions. It has three tempered glass panels and comes in three colors: black, white, and red. With room for up to eight fans (including two included 120mm fans), this case will keep your rig cool no matter how high the temps go.


  • Clean
  • Modern lines with an all-steel exterior 
  • Capable liquid cooling support 
  • Tons of cable-routing options


  • Three-pin fans

6. NZXT H510

The NZXT H510 is a mid-tower PC case with an innovative design that gives you all the room you need to create your dream system. It features two USB 3.0 ports on top of the cover, four internal drive bays, and even an ATX power supply slot.

The cable management system helps keep your cables tucked away neatly in the back of the chassis, so there’s never any clutter left over after building or upgrading your rig. With its sleek black finish and understated styling, this case will complement any color scheme you choose.

 It features two pre-installed 140mm fans for maximum cooling, and there are plenty of cable management options so that you can keep your system looking clean. The H510 also comes with a tempered glass side panel which gives you the ability to show off all of your beautiful hardware. 

This case supports ATX, Micro ATX, and Mini ITX motherboards, so there are plenty of options for hardware setups. There are two USB 3.0 ports on the front panel and HD audio jacks for connecting speakers or headphones. It comes with a tempered glass panel, three fans, and plenty of room for customizing your rig.

The NZXT H510 also includes two USB 3.0 ports on the front of the case, as well as a headphone jack and microphone input to make it easy to connect peripherals without having to reach around back or beneath your desk.

 This case has a sleek design, with plenty of room for high-end components and cooling options. The top panel offers two USB 3.0 ports, audio jacks, and an SD card reader. The front I/O panel includes one USB 2.0 port and two HD audio ports for easy access to your devices while you game or work on your computer.


  • Enhanced cable management
  • Includes USB 3.1 Gen 2-compatibility and USB-C connector.
  • Clean, modern design with uninterrupted tempered glass.


  • Some parts are made of plastic

7. CORSAIR Crystal 460X RGB

The CORSAIR Crystal 460X RGB is the perfect case for gamers looking for a sleek, simple design that offers plenty of space. This chassis has room to hold up to four 280mm radiators and nine 120mm fans in its generous interior, allowing you to build your dream water cooling setup with ease.

Its beautiful tempered glass side panel showcases your components, while the three included SP120 PWM fans are optimized for low noise operation when it’s time to game or work. The CORSAIR Crystal 460X RGB includes two 120mm front intake fan positions and one rear exhaust fan position, so you’ll have everything you need out-of-the-box.

The left panel features a magnetic dust filter, which you can remove to clean your PC’s inside more easily. This case also comes with two pre-installed 140mm fans that you can control from either of its five fan speed settings. It supports up to 280mm water cooling radiators on the top or bottom and 360mm liquid coolers in any orientation. You’ll be able to show off your rig through this sleek and stylish chassis’ three-side transparent window.

 It has plenty of space for all your components so that you can build the computer of your dreams. The CORSAIR Crystal 460X RGB is available in white or black to match any decorating style and comes fully equipped with high-quality fans and lighting effects that give it an awesome look.

The case has an acrylic side panel and offers users easy access to the motherboard tray for installation. It also comes with a tempered glass window so you can show off your rig.

It comes with six tempered glass panels, five built-in fans, and three dust filters. The front panel’s sleek design has room for up to two high-end graphics cards and four storage drives. This is one of the most advanced PC cases on the market today. 

 The design is sleek and modern, and functional, with tempered glass panels on both sides of the case. It’s easy to see what’s inside your system without having to open it up! 

This computer case comes in two versions: a side panel version or an ATX version with room for larger video cards. If you like showing off your expensive hardware, this is the best option for you.


  • Two-sided tempered glass.
  • Supports multiple graphics cards.
  • Supports three 120mm fans on the front panel.


  • Doesn’t support three-fans radiators.
  • Limited space for cable management.
  • RGB controller lacks turn off the function

8. ROSEWILL ATX Mid Tower Gaming Computer Case

Rosewill’s ATX Mid Tower Gaming Computer Case is the perfect solution for gamers looking to build a new rig. This case can fit all of your components with ease and has plenty of room for future upgrades! It has seven expansion slots so that you can install up to four video cards.

The front panel includes two USB 3.0 ports and audio jacks and LEDs that will give it a cool look while gaming in the dark. 

This case provides a sleek, stylish design that will keep your gaming rig looking good and running great. With an included 200mm fan and four 120mm fans, this case ensures plenty of airflows to cool down any system you throw at it. The LED lights on the front panel also make for a fantastic show when your machine is powered up.

The case has plenty of room to house your gaming system, with space for up to four storage devices and two 120mm fans at the front. You will also find cable routing channels in the rear of this computer chassis, meaning that you can keep your cables out of sight. This case has nine expansion slots which allow you to add more storage devices such as hard drives and video cards.

It also features two USB 3.0 ports on the front panel for easy access when plugging in your flash drives or external hard drives. The side panels are designed with four-way ventilation openings to help keep your computer running cool and efficiently even after hours of use.

This case offers ample space on its front panel for quick access to your optical drives and hard disk drives. It also features three pre-installed fans, with two 120mm LED fans at the top and one 120mm fan at the rear so that it will stay cool even during long hours of gaming sessions.

The Rosewill ATX Mid Tower Gaming Computer Case also features two USB ports on the front panel for connecting a keyboard and mouse without having to reach around the back of the computer chassis, one eSATA port on top of the unit for easy connection to an external storage device, and plenty more!


  • Classic and Professional Design
  • All-Around Airflow
  • Spacious Internal
  • Great Expandability


  • Mediocre airflow; consider liquid cooling.
  • Only one of the three USB Ports is a high-speed USB port.

How to choose the Best smallest ATX cases – Buying Guide

Choosing the best small-form-factor PC case for your needs is not an easy task. There are many models to choose from, and it’s hard to know which one will suit your requirements the best.

This buying guide has been designed with you in mind so that you can make an informed decision without wasting too much time trawling through reviews on all of the different options available.

The Smallest ATX cases are usually lighter than the larger variants due to their size. This allows you to move them around with ease, and it also makes them more accessible for IT pros on location to set up your PC.- To get more airflow in a smaller space is essential so that components don’t overheat when they’re put under heavy strain.

You should consider how much space you need in your small case and if the layout will work for you before buying a product that’s too big or not suitable.- If it doesn’t fit, then there’s no point purchasing something that will only be used once!

The most minor ATX cases are usually around 20 liters but can go up to 30 liters depending on their features. This ensures they’re compact enough to take with you when traveling without compromising performance quality.

Things to consider while buying the Best smallest ATX cases


The size of the case is important for people using it in a home environment and those who need to take their PC with them when traveling.- If you’re looking at taking your PC on location, then having something smaller than normal will be essential as space can sometimes be limited.


Having enough room inside the case for all of your components such as motherboard, power supply unit (PSU), graphics cards, and storage drives – even though they might not fit right away – should also be taken into consideration before making a purchase.

Internal Drive:

The number of internal drive bays depends on what kind of media you want to use and how many devices you have. It could include CD/DVD readers or Blu-Ray players if required by the user and SSDs and HDDs.


The shape of the case can determine how much room you have to work with when installing your components, so it’s important that this is taken into consideration before purchasing a product online or in-store.- You don’t want something too big otherwise there will be wasted space which you could use for other things such as more storage!


Some cases come with fans pre-installed, which helps keep all of your hardware cool during operation – especially if they’re small form factor PCs used for gaming purposes. If not enough air gets pushed through the whole system due to poor ventilation, overheating might occur, resulting in damage to critical parts such as CPUs and GPUs.


It’s essential that you make sure there is enough space for your fans and that they’re easily accessible when you need to clean them or change their properties, such as speed.

External Design:

External design should also be taken into consideration before making a purchase because it’s what people see first – especially if the case has transparent panels on the sides!

You can choose from options with both solid and mesh grills depending on how much air needs to get through, but make sure whichever one you go for doesn’t prevent airflow at all.- There are lots of different sizes available so finding something suitable shouldn’t take too long.


In the world of PC gaming, there are a lot of choices on what case to purchase. There are small form factor cases that take up little space and still offer room for all your components and full tower cases with plenty of room for future upgrades. 

For many people, one of the most important features they look for in a case is size. Some people don’t want to deal with a huge tower that takes up half their desk space. Others are limited by the dimensions of their home office and need something small enough to fit. Many of these cases are also designed to be used as HTPCs (Home Theater PC) or media centers!

We think these are some of the best small ATX cases on the market. These cases offer enough room for your components and can be put in any area of your home. However, there are many models that can be difficult to find the best one for you.

Whether you need something to house your components or want to create an eye-catching piece of furniture in your living room, there is something here that will suit all needs and budgets.

All you have to do now is figure out which style and size work best for your PC build! Do any of these cases appeal to you? Which one would be perfect if I only wanted it as decoration? Let us know if you have any questions below in the comment section. 

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