10 Best Smallest ATX Cases (Tested) 2023

Are you looking for the best small ATX case? Do you want to find one that fits your needs without taking up too much space? If so, you’re in the right place. As laptops continue to replace desktop computers, the need for smaller ATX cases also increases. Gone are the days when a large tower case was necessary to house all of your hardware. 

The best small ATX cases are the perfect solution for gamers and PC builders who need a smaller form factor without sacrificing performance or features. In this list, we’ll explore some of the best small ATX cases on the market, ranging from affordable models to high-end gaming rigs. 

So whether you’re looking for a compact PC that doesn’t skimp on power or something more portable that you can take with you on the go, there’s sure to be a case that fits your needs. Let’s take a closer look at some of the top contenders!

At a Glance:

10 Best Smallest ATX Cases

DesignPC CasesRetailer
Best Pick1. Corsair Carbide Air 540
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Staff Pick2. NZXT H510CA-H510B-B1Compact ATX Mid-Tower PC Gaming Case
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Budget Pick3. CORSAIR 7000D Airflow Full-Tower ATX PC Case
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4. Rosewill Galaxy-01 ATX MidTower Computer Case
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5. Thermaltake Core V1 ITX Cube Case
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6. Corsair Carbide Series 100R Mid-Tower Gaming Case
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7. Cooler Master MasterCase SL600MMid Tower Case
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8. LIAN LI PC-Q32 Mini Tower Case
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9. Fractal Design Meshify C Mini 
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10. Thermaltake Core V1 Mini Tower Case
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1. Corsair Carbide Air 540

Best Pick

The Corsair Carbide Air 540 is a unique case that’s been designed from the ground up to offer maximum airflow and cooling. It features a dual-chamber design that separates hot components, such as your GPU and CPU, from other hardware you may have in your build.

Not only will this help keep things running cool, but it also looks great with its sleek black exterior accented by white LED lighting. 

The included fans are easy to install and can be controlled via a fan controller or software, making it convenient for those looking for more customized setups.

If you’re looking for an affordable case that offers plenty of cooling options without sacrificing size, the Carbide Air 540 should definitely be on your shortlist.

At 15.4 x 13.3 x 14.2 inches, the Carbide Air 540 isn’t exactly small. This is due in large part to its dual-chamber design that separates different components, which often require larger cases to house them properly.

Despite its size, it still offers a fairly compact form factor that doesn’t sacrifice performance or features for its smaller stature. 

The front panel comes with two USB 3.0 ports and headphone/microphone jacks along with power and reset buttons in white LED lighting along the top edge of the case.

While there aren’t any side panels available for this model, you’ll find your motherboard attached to one side of the case while facing outward for easy access during installation or upgrades later on.

The Carbide Air 540 is one of the best ATX cases for anyone looking for a more affordable option that’s compact and offers plenty of cooling options.

Its fan controller lets you adjust your fans precisely to keep everything running nice and cool without too much noise, making it an excellent choice if you want powerful hardware but don’t want to sacrifice convenience or aesthetics in doing so.


  • Plenty of cooling options 
  • Unique dual-chamber design separates hot components 
  • White LED lighting on top panel  
  • USB 3.0 ports included


  • Dual chamber design makes it bigger than other models in its class

2. NZXT H510CA-H510B-B1Compact ATX Mid-Tower PC Gaming Case

Staff Pick

The Noctis H510 ROG Certified case is specifically designed for gaming rigs, offering an aggressive exterior design with subtle looks to match.

It features four USB ports along the front edge plus headphone and microphone jacks along with power and reset buttons in red LED lighting.

Not only does it come pre-installed with three fans (one at the rear and two upfront), but it also comes ready for additional cooling options like water cooling radiators or more fans if needed.

There’s enough space to support larger components too, so you won’t have to worry about struggling to find compatible hardware later on down the road.

At 16 x 14.2 x 18 inches, this model offers a compact ATX form factor that’s large enough to hold your components effectively without sacrificing style.

It’s also on the lighter side at just under 20 pounds, which makes it easy to move around and add additional hardware later on if desired.

The Noctis H510 ROG Certified case looks aggressive with its stealth bomber-inspired sleek black exterior accented by a red LED lighting everywhere from the power buttons to the fans in front.

It offers a good blend of form and function that will work well in several spaces including a gaming area or a more low-key set up in your living room.


  • Plenty of cooling options included 
  • Aggressive exterior design
  • USB 3.0 ports included 


  • Some find it too bulky for their tastes

3. CORSAIR 7000D Airflow Full-Tower ATX PC Case

Budget Pick

The Graphite 7000D full tower is one of the best PC cases in its class when it comes to style, offering a sleek black design with smoked tempered glass windows to let you easily see your hardware inside.

The front panel offers USB 3.0 ports along with headphones and microphone jacks while the top edge has buttons for power and reset that are backlit in white LED lighting.

At 21.65 x 9.76 x 23.62  inches, this isn’t exactly small by any stretch of the imagination but it’s still relatively lightweight at just over 27 pounds without hard drives or components installed yet.

To give you an idea of how much space you have available, there are nine expansion slots on the case itself plus three more on the top panel that you can use for external drives or extra hardware.

It’s also got a few other neat design features worth mentioning. The front panel has a built-in fan controller to let you fine-tune your fans precisely to get the cooling you need without too much noise while routing cables around the back are made easier by rubber grommets along with ample space between components.

The Graphite 7000D full tower case is one of the best ATX cases when it comes to style, offering plenty of functionality and quality construction in a sleek black exterior with smoked tempered glass windows in every direction.

It offers easy access to all your internal hardware and just enough room to add additional components down the road if desired, making it a nice choice even though it’s a little on the bulky side.


  • Plenty of cooling options included 
  • Sleek black exterior with smoked tempered glass windows 


  • Heavier than other models in its class

4. Rosewill Galaxy-01 ATX MidTower Computer Case

The Galaxy-01 offers one of the best bangs for your buck around, offering budget-friendly prices without sacrificing quality or performance. It’s designed to support all standard components including ATX and Micro ATX motherboards as well as graphics cards up to 12 inches long and power supplies up to 7 inches.

There are four fans built into this case right out of the box, two front mountedLED 120mm blue fans and two rear-mounted 140mm black fans.

The front panel is a fairly standard brushed aluminum finish accented with a stylish diamond-cut pattern around the front air intake while the top edge has a small compartment to store USB 3.0 cables, headsets, or other accessories out of sight until you need them.

At 16 x 9.6 x 19 inches, this case is on the lighter side for its size at just under 20 pounds without components installed yet it’s also not quite as big as some full-tower models that tend to offer more room but aren’t always very practical if you’re tight on space in your entertainment center or office setup.

It comes with enough USB 2.0 ports for most purposes in addition to two USB 3.0 ports and front panel audio jacks for convenience.

The main complaint with this case is the quality of the materials used, a problem several other Rosewill cases have been criticized for in the past.

The exterior shell tends to feel cheap at times and you might notice some warping or bending over time if you’re not careful when removing it from your desk or entertainment center.


  • Great price point 
  • USB 3.0 ports included 
  • Lots of cooling options included


  • Quality control could be better 

5. Thermaltake Core V1 ITX Cube Case

If you’re looking for something a little more compact without sacrificing too much functionality, the Thermaltake V1 should be at the top of your list. It’s a standard Micro ATX case at 17.7 x 10.5 x 13 inches so it’s plenty roomy enough to fit all most components with room for cable management as well.

It comes with three preinstalled fans, two 120mm front intake fans, and one rear 120mm exhaust fan so you’ll probably want to add a few more depending on how much heat you’re dealing with internally but if that’s not enough, there’s also support for up to eight 80mm or 92mm fans around the case just in case you need a lot of cooling power under normal circumstances or need to push your system hard.

The exterior shell is made from durable steel wrapped around plastic panels on either side and the whole thing weighs just under 22 pounds without components installed so it’s pretty lightweight and easier to move around than standard full tower cases while offering a little more room inside.

There are plenty of USB 2.0 ports included along with audio jacks on the front panel and other convenient features like built-in handles for easy transport if you need to lug this case from one room to another or move it between workstations in your office.

The downside is that this case doesn’t come with internal fans preinstalled so depending on how much heat your components produce, you might have to buy a few extra fans right away before transferring any hardware into this case.

It also runs a little warm thanks to limited ventilation options although there is an air intake on the front and another on the top so you’ll probably still get pretty good cooling performance overall.


  • Durable 
  • Lightweight and compact 
  • Lots of fans included 


  • No internal case fans preinstalled 

6. Corsair Carbide Series 100R Mid-Tower Gaming Case

There’s plenty to like about this budget-friendly mid-tower from Corsair with one of the more attractive price points available right now for under $50.

It measures 16 x 12.2 x 18 inches, making it a little larger than some Micro ATX cases but smaller than most full towers and standard ATX cases as well for those tight on desk space or entertainment center real estate.

The exterior shell is made from steel with a textured plastic front panel with a removable mesh grill to protect the internal components from dust and other small particles that could cause damage.

It weighs 19.2 pounds without any hardware installed so it’s fairly lightweight but durable enough to handle some abuse if you need to move it around regularly.

There are two USB 3.0 ports included along with traditional audio jacks on the front panel for convenience purposes, something not always found in cases at this price point nowadays since full-tower models often include higher quality or more convenient features even at their own lower price points compared to mid-tower options.

This case also comes with three preinstalled fans so there’s no need to buy anything extra right away, although you might want more cooling power if your components produce a lot of heat.

If that’s not enough, there’s room for up to seven more fans depending on how much airflow you need and where you want it entering the internal components so it is should be possible to get great cooling performance out of this case even under heavy use.

There are also removable dust filters over the front intake mesh grill as well as bottom panel vents, making it easy to protect your hardware from damage due to extended periods of disuse without losing any potential airflow at the same time. 

All in all, this is one of Corsair’s best budget-friendly cases yet with lots of convenient features like rounded edges and built-in cable management cutouts for an extremely clean look inside your entertainment center or workstation along with plenty of fans preinstalled for great cooling performance.


  • Attractive price point
  • Lots of fans included
  • Rounded edges


  • No USB 3.1 Ports 

7. Cooler Master MasterCase SL600MMid Tower Case

Cooler Master is a well-known name in the world of computer cases so it’s no surprise that they have a Micro ATX option available right now. It’s called the SL600M and it’s one of their newer models available now, but despite its modern design, this case comes in at a very affordable price point under $100.

It measures 20 x 9.8 x 19 inches which aren’t too big or too small compared to other Micro ATX cases on the market right now including some full towers as well as competing for mid-tower options like the MasterBox Lite 5 reviewed above.

There aren’t any fans included with the SL600M right out of the box but there is a large vent on the top panel and another on the bottom for good airflow while7. Cooler Master MasterCase H500P Mesh Mid Tower

Not everyone likes a flashy design or bright colored cases that stand out in an entertainment center, especially if you prefer to keep your setup as low-key as possible without adding unnecessary noise from extra fans or other features.

Some people don’t even want their computer case to be visible at all which can make finding a Micro ATX option difficult unless they’re shopping for a full tower model.  

Since most smaller options come with a windowed side panel these days just so you can see what’s inside. Fortunately, the H500P Mesh has a large vent on the top panel with a magnetic dust filter built-in for great airflow without compromising any of its modern design features.

It looks like you might be able to fit seven fans inside this case if you wanted to but it comes standard with three preinstalled RGB fans which are still more than enough for most people even under heavy use so there’s no need to worry about ruining your clean interior look by adding anything else yourself. 

There are also cutouts specifically designed for cable management so you can keep your setup looking just as polished and professional as possible once all your hardware is installed properly inside this case before using it at full capacity.


  • Three pre-installed RGB fans
  • Ultra-Slim form factor
  • Less expensive than most Micro ATX options


  • Fewer features compared to larger cases 

8. LIAN LI PC-Q32 Mini Tower Case

Just because you want a small, compact chassis for your Micro ATX build doesn’t mean it has to be basic or boring looking since there are plenty of choices available right now with some interesting designs.

Take the Lian Li PC-Q32 as an example, which is one of the newest Micro ATX cases out right now made by one of the oldest names in computer cases so they know what they’re doing even at lower price points like this one.

With a simple, all-black exterior it has a unique look to stand out from other cases on the market but still manages to be under 12 inches tall which is perfect for saving space in tight entertainment centers or workstations without compromising any of the features you need for daily use.

This Micro ATX model measures about 9 x 11.8 x 7 inches so it’s definitely smaller than most full towers out there but still offers enough room inside to fit your hardware including high-end graphics cards and multiple storage drives at once.

There are also two preinstalled 120mm fans here with standard mounting holes along with one exhaust fan for great airflow overall plus plenty of ports around the back including USB 3.0 inputs for fast data transfers between external devices and your computer.

It measures just 14.6 x 8.3 x 16.1 inches so it’s even smaller than the Cooler Master Masterbox Lite 5 which is designed for Mini ITX builds instead of Micro ATX, but there’s still room inside to fit quite a few components including one optical drive bay up top and another on the front panel plus three storage bays in total with cages built into the interior to keep everything organized neatly.


  • Extra-Thin design fits well in any setup
  • Roomy enough for most components 
  • Slim, compact design


  • Not many extra features compared to larger designs

9. Fractal Design Meshify C Mini 

Just because a case is small and looks simple doesn’t mean it’s boring or not worth buying since there are plenty of excellent Micro ATX options available right now at lower price points including the latest Meshify C from Fractal Design which measures 11.2 x 8.3 x 14 inches with no external drive bays to ruin the clean lines on the face panel directly but you can snap them onto the rear if you need them later on.

It has a solid black finish all around with a mesh front panel to add some interesting texture along with a larger mesh vent on the front of the top panel for plenty of airflows even without any fans installed at first.

There are two preinstalled 120mm fans here which come with both black and white trim options so you can choose what works best with your setup while there’s room inside to fit a Micro ATX motherboard, full-size graphics card, and up to four 2.5 SSDs or hard drives at once.

This case measures just 9 x 13 x 14 inches so it’s extremely small compared to most other computer cases out right now but still more than large enough for most people looking for a simple build case.

It doesn’t have many extra features either besides that optional drive wall on the right side and some extra holes on the back for water cooling, but that’s fine since it looks great as is and works better than most Mini ITX cases out there.


  • Budget-friendly 
  • Extra storage bays for keeping everything tidy
  • High-quality construction with a solid design


  • Interior can be a little cramped

10. Thermaltake Core V1 Mini Tower Case

Just because you want to build an ITX PC next doesn’t mean you have to spend tons of cash on a huge case with tons of features you’ll never use or fit all of your components inside without any problems either.

The Thermaltake Core V1 manages to do both at once offering one of the best prices around for a Mini ITX case that manages to look stylish and modern with an open frame design for plenty of ventilation at the same time.

It’s only 11.8 x 7.2 x 12 inches so it’s about as small as you can get without going for something even more basic although there are some full-size options available on the market including a few from Thermaltake which cost a little bit more but offer a larger footprint instead. 

That being said, this model is still extremely roomy enough inside to fit most components including an ATX power supply mounted on the bottom, up to three 3.5 inch hard drives, one 2.5 inch SSD below those bays, and up to six expansion slots at once for future upgrades. 

The front panel is fully meshed for tons of airflow even without any extra fans installed and Thermaltake includes one 120mm fan with white trim to keep everything cool along with a few spare screws if you want to add more later on.

Even though it’s extremely affordable compared to most Mini ITX cases, this model still manages to look modern and stylish at the same time with its sleek black finish, brushed aluminum accents around the edges, and that big hexagonal vent up top.

It’s compact enough to fit in basically any setup without taking up too much space or being too difficult to transport between rooms either so it works just as well for your living room PC as it does for your bedroom rig stationed next to the TV.


  • Fast performance
  • Plenty of room for big GPUs and cooling components 
  • Solid construction with a sleek design


  • Not many extra features compared to larger designs 

Frequently Asked Questions

What is the smallest Micro-ATX case?

The smallest Micro-ATX case is the Thermaltake Core V1 Mini Tower Case which measures 11.8 x 7.2 x12 inches. What is the smallest ATX case? The smallest ATX case is the Thermaltake Core V1 Mini Tower Case which measures 11.8 x 7.2 x 12 inches. 

Is mini or Micro-ATX smaller?

Mini-ITX is much smaller than Micro-ATX which measures 12 x 9.6 x 8 inches.

What is the smallest Mini-ITX case?

The smallest Mini-ITX case is the BitFenix Prodigy Micro ATX which measures 11.8 x 7.2 x12 inches. 

What is compact ATX Mid Tower?

Compact ATX Mid Tower is a mid-sized tower case that has more space for bigger components.

What is the smallest full-size ATX tower?

The smallest full-size ATX tower is the Thermaltake Core X9 E-ATX which measures 22 x 20.8 x 9 inches.

Final Words

These are the top 10 smallest ATX cases of all time. These mid-tower cases are perfect for your next gaming build or HTPC, media center computer. As you can see, they are great in performance and design.

All these full-size towers measure less than 22 inches tall which is more than enough space to fit most of the components around.

Remember, the best case for you depends on what you want to do with it. You should consider where you will put your PC and how much noise it makes since that dictates which types of fans and design elements are better.

The important thing is that a Mini-ITX case can save space compared to a full ATX tower by sacrificing some cooling performance and space for customization.

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By Aaron

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