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Best Smallest ATX Cases in 2022

What does ATX mean?

ATX [Advanced Technology eXtended] is the standard motherboard form factor for desktop computers. The ATX specification defines a motherboard’s physical layout, connectors, and signal definitions, as well as the size and location of its CPU socket and slots.  

There are many different types of ATX boards, but the three most common types are listed below:

Standard ATX – It is an excellent choice if you want a computer with a lot of expansion room and a high-performance graphics card. Standard ATX motherboards tend to be the most expensive because they usually have more features and better performance than other types of motherboards.

Micro ATX – Micro ATX motherboards are designed for smaller form factor cases. They can fit into full-sized computer cases, but they will only use the space in which the larger ATX standard boards fit. Micro ATX motherboards also tend to be cheaper than standard-sized boards, as they offer fewer features and less power.

Mini ATX – These motherboards feature a smaller size than other boards and can fit into a computer case with an even smaller footprint than Micro ATX motherboards. You can use them in full-sized computer cases, but they will only use the already present space. Mini ATX motherboards tend to be very cheap as they offer fewer features and power than other boards.

Best Smallest ATX Cases in 2021: User Reviews & Buying Guide

AwardModelBrand
Best Slim ATX CaseHAF XB EVOCooler Master
Best Airflow Compact ATX CaseCarbide Air 540Corsair
Best Slim ATX CaseML08 SlimSilverStone 
Best Budget-Friendly Small ATX CaseMeshify CFractal Design
Best Small ATX Case for Horizontal or Vertical PositioningMasterBox Q500LCooler Master
Best Small ATX Case with Optical DriveBlack Grandia GD09B HTPC CaseSILVERSTONE
Best Small ATX Case for BeginnersH510NZXT
Best Looking Small ATX CaseCrystal 460X RGBCORSAIR
Best Small ATX Case for TravellingThermaltake Core G3Thermaltake
Best User-Friendly Small ATX CaseMasterbox 3.1 TGCooler Master

Cooler Master HAF XB EVO

Award:Best Small ATX Case
Material:Alloy Steel
Motherboard Compatibility:ATX
Fans:2
Cooling Method:Air
Dimensions:16.7 x 17.4 x 13 inches

 

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What’s my review on it?

Cooler Master has done an admirable job of scaling down a gargantuan case into a sleek and sturdy mid-tower with the HAF XB EVO. We say “scaled-down,” but it really feels like more of an interpretation of what a micro-ATX chassis should be like. The reset button is located at the top, bringing back memories of the original Cosmos, and there’s still plenty of room for clean cable management and excellent airflow.

Why it stands out as the best?

The HAF XB EVO is a compact ATX case with an innovative design that gives you more space for high-end hardware. The separate compartment for hard drives guarantees that heat generated by other components does not damage your SSDs or HDDs. A removable 3.5″ drive cage lets you install large graphics cards up to 334mm in length, and there is plenty of room for cooling with two 120mm fans included.

What recent buyers report?

Buyers have expressed happiness with this newest member of the Cooler Master’s family. Not only does it provide extreme real estate for custom cooling, but it is also an impressively sized Mini ITX case that has serious power at its disposal. In addition, there are good full remarks from users who often build or rebuild their systems and want to make sure they have no boundaries.

The Bottom Line:

The Cooler Master HAF XB EVO is the best small ATX computer case. Featuring a compact design, support for large graphics cards, and ample ventilation, this mini tower has all you need to build an awesome gaming rig.

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Pros

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Cons

Corsair Carbide Air 540

Award:Best Airflow Compact ATX Case
Material:Alloy Steel
Motherboard Compatibility:ATX
Fans:2
Cooling Method:Air & Water
Dimensions:16.3 x 13.1 x 18 inches

What’s my review on it?

Looking for the perfect small ATX case but don’t want to sacrifice airflow for size? The Carbide Air 540 strikes the perfect balance between compact design and big-case features. Its three included direct-touch fans maintain excellent airflow with little turbulence. And, if you’re working on a custom setup, its spacious interior can easily accommodate more extended graphics cards up to 320mm in length.

Why it stands out as the best?

The revolutionary design of the Carbide Series Air 540 gives you the room you need to build a powerful Mini-ITX or Micro-ATX system. You get loads of space for big graphics cards and plenty of cooling performance, and you can still fit up to six SSDs and two HDDs. And, like all Corsair cases, the Air 540 is built with quiet in mind; its three included AF140L intake and exhaust fans give you excellent airflow with minimal noise.

What recent buyers report?

Smaller doesn’t mean compromising performance, and the Carbide Air 540 has proved it to small ATX case lovers. Customers love the small case’s ability to house the latest high-performance components, USB 3.0 compatibility, and an innovative, angled reservoir bracket for their custom-built PC water-cooling setups.

The Bottom Line:

Corsair Carbide Air 540 builds an extensive, beautiful system around a compact footprint without compromising cooling.

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SilverStone ML08 Slim

Award:Best Slim ATX Case
Material:Alloy Steel & Plastic
Motherboard Compatibility:Mini ITX
Fans:2
Cooling Method:Air
Dimensions:17 x 17 x 7 inches

What’s my review on it?

The SilverStone Milo ML08 is a super slim, super small chassis that won’t take up much space among other components. With a volume of just 13.2 liters, this case has a side panel window that will show off the hardware inside while still being portable enough to bring to LAN parties. It supports PSUs up to 180 mm long and graphics cards of 330 mm in length. This case comes with two fans, so your hardware will stay nice and cool. Though it’s small, you can still fit up to three 2.5″ hard drives or SSDs inside the case.

Why it stands out as the best?

The SilverStone ML08 is designed for high-end small form factor systems. Made to fit in the tiniest of spaces, this case can house 4K or 5K displays with still plenty of breathing room inside, thanks to its slim shape. It’s also capable of supporting multiple 3.5″ hard drives and up to three 2.5″ SSDs. In addition, you can choose from a broad selection of standard best-in-class components to make your dream system come to life inside the ML08!

What recent buyers report?

SilverStone ML08 chassis has proved itself the perfect match for the contemporary Mini-ITX system builders who place performance, minimalism, and sexy styling at the top of their priority list. Its smaller dimensions have allowed space-conscious system builders to have a slimmer PC in an elegant case that can be placed anywhere made possible by its small footprint.

The Bottom Line:

The SilverStone Milo ML08 is a feature-rich Mini-ITX computer case with excellent cooling performance, including two of the company’s acclaimed ultra-quiet fans. Plenty of drive bays and the ability to hold graphics cards as long as 330mm round out an impressive and affordable package.

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Fractal Design Meshify C

Fractal Design Meshify C

Award:Best Budget-Friendly Small ATX Case
Material:Alloy Steel & Tempered Glass
Motherboard Compatibility:ATX
Fans:2
Cooling Method:Air & Water
Dimensions:16.1 x 8.54 x 17.83 inches

What’s my review on it?

The Meshify C has a small footprint and is easily the best small ATX case I’ve reviewed. It comes in black and white color schemes, and it supports mini-ITX, micro-ATX and ATX motherboards. I liked the case’s overall design as you’ll be getting many features for this price range. The case’s front panel is up to date with its USB 3.0 ports and overall minimalist design. The Storage options are limited with only five slots for storage, but that’s better than no support at all.

Why it stands out as the best?

The Fractal Design Meshify C is the best affordable small ATX case. The case offers two pre-installed fans for outstanding cooling, with one 140mm in front and the second 120mm in the rear. Your components will be kept safe behind the tinted tempered glass panel while the smart drive cages make hard drive installation simple and easy while hiding drives out of sight.

What recent buyers report?

Customers have rated the Fractal Design Meshify C as a premium PC case. There is an appreciation for its elegant and understated Scandinavian design and its ability to suit almost any build. Everything has been designed and built to create a truly remarkable experience and ensure that your system not only looks great but also runs quietly, stays cool, and has room for future upgrades.

The Bottom Line:

The Meshify C is ideal for small form factor builds yet large enough to fit your PC essentials. It features a stylish design with plenty of drive support, cooling options, and cable routing options; while at the same time being available at an affordable price to suit every budget-conscious computer whiz’s pocket.

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Cooler Master MasterBox Q500L

Award:Best Small ATX Case for Horizontal or Vertical Positioning
Material:Acrylic
Motherboard Compatibility:ATX
Fans:4
Cooling Method:Air
Dimensions:15.2 x 9.1 x 15 inches
Cooler Master MasterBox Q500L

What’s my review on it?

Smaller, smarter, simpler! The MasterBox Q500L is the best small ATX case for gaming and home theater systems with a space-saving design. This Micro-ATX case supports only 386 x 381mm motherboards. Besides, it is capable of ATX, Micro-ATX, and Mini-ITX support. Plus, it comes with full access to the cooling fans and optional liquid cooling or air cooling support for your CPU or GPU overclocking adventures. You can use the case vertically or horizontally.

Why it stands out as the best?

The features we care the most about reside in the Q500L. For starters, the front-panel USB 3.0 ports and two top-panel fan controller knobs add value to this case’s functionality. It is not the usual kind of design for gaming cases, but if you want a subtle approach to your gaming rig, then this model is what you should go for.

What recent buyers report?

Customers have termed this slim ATX case as their weapon of choice for compact gaming builds. Aerodynamically inspired hidden HDD design, which helps the cooling system compelling enough. Tool-free mounting system for simple assembly. The side panel is designed with high-quality aluminum material. It also supports high-level GPU cards.

The Bottom Line:

This case goes beyond the aesthetics where everything is under control and well-thought-out. The Q500L leaves no corner to hide dust and promises an excellent cooling efficiency for all components. At the same time, the design delivers a robust computing environment worthy of its name.

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SILVERSTONE Black Grandia GD09B HTPC Case

SILVERSTONE Black Grandia GD09B HTPC Case

Award:Best Small ATX Case with Optical Drive
Material:Aluminum
Motherboard Compatibility:ATX
Fans:2
Cooling Method:Air
Dimensions:14.09 x 17.32 x 6.69 inches

What’s my review on it?

The Silverstone Black GD09B HTPC Case is the best small ATX case with good cooling, air filter, and optical drive. It can hold an ATX or Micro ATX motherboard and has eight expansion slots and two tool-less optical drive bay bays, and 4 3.5″ / 2.5″ hard drive bays with rubber mountings and is compatible with 120mm cooling fans, and is compatible with 120mm fans in the front and 120m in the rear of the chassis. In addition, there are two grommets for wire management.

Why it stands out as the best?

The small ATX HTPC case, GD09B from SilverStone, is a perfect combination of compact design and expandability. It supports ATX motherboards, long graphic cards up to 12.2 inches in length, and high-end components for enthusiasts. The chassis has been designed to allow placement in tight places and features a lightweight extruded aluminum construction with black brushed accents and an aluminum front door.

What recent buyers report?

Most users have got this for their HTPC and are very happy with it. It has a good amount of room and looks nice. Users like the way the power and reset buttons feel; they’re not mushy like some other cases they’ve seen. The drive bay covers are magnetic and stay on firmly. The included fans are quiet but do move a decent amount of air.

The Bottom Line:

With an all-black exterior, the sleek, classy Grandia GD09B will be a perfect addition to any modern home theater. It’s small enough to fit under the stand of your home entertainment center but large enough to handle even the most oversized graphics cards available to power your PC gaming system.

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NZXT H510

Award:Best Small ATX Case for Beginners
Material:Tempered Glass
Motherboard Compatibility:ATX
Fans:2
Cooling Method:Air & Water
Dimensions:16.85 x 8.27 x 18.11 inches
NZXT H510

What’s my review on it?

The H510 is NZXT’s budget-priced offering for the beginner-level PC builder. However, it comes with an impressive list of features usually seen in premium cases. It supports several fan options, offers a mesh fabric on top of the case to allow for positive airflow, and comes with both a 3×3.5″ and 2×2.5″ drive cage, enabling you to expand your existing system if need be. This ATX Mid-tower supports ATX, Micro ATX, and Mini-ITX motherboards.

Why it stands out as the best?

The H510 is an affordable, compact ATX full-tower built for maximum airflow and cooling. It comes with an external mounting bracket to support extra-long graphics cards up to 350mm, with a removable hard drive cage to fit up to 3 hard drives and 2 SSDs. The front panel features a white color scheme with a sleek mirror finish. In addition, the H510 comes with one 120mm front intake fan, and a single LED 120mm rear exhaust fan.

What recent buyers report?

Users love the NZXT H510 ATX case. They have termed it as a great enclosure for a budget-minded build. Buyers also like the fact that it has a sleek, clean look to it. Some users say that they added a few LED fans to give it a nice lighting effect.

The Bottom Line:

The H510 is the latest addition to the popular compact case series. The H Series is renowned for its simple design, aggressive pricing, ease of installation, and small footprint.

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CORSAIR Crystal 460X RGB

Award:Best Looking Small ATX Case
Material:Tempered Glass
Motherboard Compatibility:ATX
Fans:3
Cooling Method:Water
Dimensions:17.32 x 8.66 x 18.27 inches

What’s my review on it?

The CORSAIR Crystal 460X RGB takes everything great about the classic enthusiast case and gives it a modern makeover. Features like a magnetic cable-management puck, a three-speed fan controller, an integrated power supply shroud, a tempered glass side panel, and a stylish front panel with multicolor fan lighting give you complete control over the look and function of your setup.

Why it stands out as the best?

The Crystal 460X RGB is the best-looking small ATX case. It features a tempered glass side panel and includes RGB fans that help show off the components. Inside it has space for one optical drive and three SSDs, and it can fit full-sized graphics cards.

What recent buyers report?

Customers say that the Crystal 460X is a great-looking case with a spotless look to it. It has plenty of space for all its components and even comes with 2 LED fans included. In addition, the glass side panel looks really sleek and makes the case stand out from the others. The only downside that customers have reported is that this ATX case doesn’t support liquid cooling. So if you’re looking for something to house your high-end builds, this isn’t it. The thermal performance is just average but good enough for most builds.

The Bottom Line:

CORSAIR Crystal 460X RGB stands out for its classy appearance. Simple, compact, and with a stunning RGB case lighting system, it’s an excellent solution for building a powerful but attractive system.

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Cooler Master Masterbox 3.1 TG

Award:Best User-Friendly Small ATX Case
Material:Acrylic
Motherboard Compatibility:Micro-ATX
Fans:3
Cooling Method:Air
Dimensions:17.62 x 7.5 x 15 inches
Cooler Master Masterbox 3.1 TG

What’s my review on it?

The MasterBox 3.1 TG Black is the smallest ATX case to be big on features. Its design, black coated interior, and front panel provide users with a clean environment for building their system, supports full-size power supply units, and cable management holes help reduce cable clutter for an enhanced overall build appearance. This case can keep long graphic cards up to 380mm. The front panel offers multiple options for I/O ports (the US power supply comes with one standard USB 2.0 port). Pre-installed sound dampening material on the top panel inside the case helps to reduce unnecessary noise from HDD and fans.

Why it stands out as the best?

The design team at Cooler Master has taken the best-selling MasterBox case series to the next level by creating a highly flexible unit with comprehensive cooling options. It can accommodate mini-ITX and Micro-ATX motherboards, multiple forms of specialized, high-end graphics cards, long high-end power supply units, and various types of storage devices – all with room for more!

What recent buyers report?

The case is stylish, sturdy, and easy to work with. The design of the case is great for both cooling and cable management. People have recommended this case to anyone looking for sleek, easy work with small ATX cases.

The Bottom Line:

Small but mighty. The MasterBox 3.1 TG is the top choice for building your dream machine. It has everything you need to develop a fantastic gaming rig in a sleek design that stands out for all the right reasons.

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Things To Consider Before Buying

Case Build Quality:

Your computer system is an essential combination of data storage, digital entertainment, and work productivity. So you always look for the best-looking computer case to define your personality. But if you are not aware of the PC case build quality, you might be making a huge mistake by choosing one that bears only an attractive look but poor performance.

Toughness, durability, and stability are essential features of an exemplary computer case. The high-quality cases are made of stainless steel, aluminum, and polymers, which are more sturdy than low-quality ones. The low-quality ones are made of thin metal plates. Consequently, they bend and get dents over them. The ones with thin metal plates are more prone to scratches and damages.

The outer appearance is also another important feature because it defines your personality. The colorful computer cases will decorate your desktop, while the sleek black or red ones will increase your professional look.

Cable Management:

Cable management is the process of arranging and hiding cables and wires, so they do not obstruct and look messy. It is essential to a neat and clean PC case. Sometimes it is hard to manage all the cables in a PC case. There are too many cables. You should arrange them so that they do not interfere with airflow from fans or create a big mess inside the case. We need to take care of our cables properly.

Cable management starts with planning before buying components for your system. First, you should make a list of everything you need to purchase and make sure you have enough space for everything inside your computer case.

You have to have an idea of what are the things that you are going to do inside the case. For example, if you add a couple of fans or hide some of the accessories away, there is no need to spend too much money on specialized wire management tools.

However, suppose you are planning on doing some more hardcore modifications. In that case, I suggest that you go ahead and get yourself a set of wire management tools so your work will be more accessible and will end up more professional-looking. 

CPU Cooling & Ventilation:

Cooling your PC is an important thing. However, the heat can harm the components of your build. It can even result in the burning of your motherboard if it overheats. So you need to find a solution to keep your PC cool and calm, and that is why you need a good case with plenty of fans and vents and openings and the ability to accommodate the correct type of cooler.

Coolers will aid in keeping your PC safe from overheating, which is very important since you don’t want the components of your PC to be damaged. They work by transferring heat from one area to another so as not to harm your PC. But before looking for coolers for sale, you must first check the kind of case that will hold them. Airflow is also vital to allow cool air in and hot air out.

Remember, even if you have good coolers, they will not work if there is not enough airflow inside and outside your PC case.

Summary

AwardModelBrand
Best Slim ATX CaseHAF XB EVOCooler Master
Best Airflow Compact ATX CaseCarbide Air 540Corsair
Best Slim ATX CaseML08 SlimSilverStone
Best Budget-Friendly Small ATX CaseMeshify CFractal Design
Best Small ATX Case for Horizontal or Vertical PositioningMasterBox Q500LCooler Master
Best Small ATX Case with Optical DriveBlack Grandia GD09B HTPC CaseSILVERSTONE
Best Small ATX Case for BeginnersH510NZXT
Best Looking Small ATX CaseCrystal 460X RGBCORSAIR
Best Small ATX Case for TravellingThermaltake Core G3Thermaltake
Best User-Friendly Small ATX CaseMasterbox 3.1 TGCooler Master

Conclusion:

So there you have it, a brief compilation of what we believe to be the best small ATX cases on the market. When it comes to sizes, form factors are one of the hardest things to pick for a build. We understand that. But hopefully, we’ve been able to at least make your life a little bit easier.

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