Smallest Micro ATX Case – Buying Guide

smallest Micro ATX case

The smallest micro atx case is mainly serves as a containment zone for your motherboard with the provision of a complete heat dissipation system as well. As we know that the motherboards are present in multiple form factors depending upon the form factor of internal components. So, any case will not go with any of the motherboards.

You have to search for the right one by keeping in mind the form factor of your one. Most of the motherboards come with the form factor of Micro ATX are designed for gamers and can result in delivering the best performance out of it. So being a gamer if you are establishing your gaming setup using this one and searching for a case that does not take much of your space it means that comes in a smaller size then you should surely ponder over the list of such cases below.

Rather than a list, the details are also here so you can feasibly take a complete overview to find out whether it meets your requirements or not?

Wanna make a quick decision?

The Thermaltake Core V21 comes with the complete support with the micro ATX and mini ITX motherboards. This small size, chamber designed case is divided into two chambers. One of them is made for cooling purposes while the other one is used for PSU. It holds a pre-installed fan which ensures the provision of a complete cooling zone. The stackable and thermal solution technology allows liquid cooling. You can use it in vertical or horizontal mode with your choice. The USB ports and audio connectors with start and preset buttons are also a part of it. Moreover, this highly expandable case also comes with dust filters. It offers you a quiet operation as well.

Smallest Micro ATX Case

There are multiple cases in the market, differ in size, features, and prices. Having a look at all of them can be a bit hectic and frantic job so we have chosen some of the best ones for you and crafted a comparison table of them below. By checking the table you can feasibly compare products in terms of their features and prices.

Let’s Start…

1.) Thermaltake Core V21

Thermaltake Core V21

While searching for the case for your motherboard with the form factor micro ATX, the Thermaltake Care V21 can be proved as one of the most reliable options as it completely supports board with for factor Micro ATX and Mini ITX. The case is mainly divided into two chambers, upper and lower.

The upper chamber is responsible for performing cooling operation whereas the lower chamber is designed for a power supply unit and drive bays which hold disks and drives. It allows you to place it in a vertical or horizontal orientation. The case is fully expandable it means you can add multiple peripherals inside it. It mainly allows you to add up to 6 data storage devices, expansion slots, CPU coolers, and PSU with their specifications.

For the prevention of heat up, the case comes with the one 200 mm pre-installed fan which provides efficient airflow and keeps it cool. Because of the drive bay and stackable design, it allows you to build up a liquid cooling system inside as well. The front and rear fans provide excellent ventilation to the case.

The dust filters are also a part of it that doesn’t let the dust particles enter inside with the airflow and ventilation. It comes with the PSU bracket which minimizes the noise transfer out of the case. The rubber gaskets in the case make it highly shockproof and maximize its durability. 2 USB 3.0 ports headphone and microphone jacks along with the power and reset button are present on the front panel.

All in all, the case holds all the properties that can result in boosting the performance. Because of the expansions offer by it, you can add up more peripherals. It ensures the provision of a cooling zone in maximum silence.

Thermaltake Core V21 SPCC Micro ATX, Mini ITX Cube Gaming Computer Case Chassis, Small Form Factor...
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Thermaltake Core V21 SPCC Micro ATX, Mini ITX Cube Gaming Computer Case Chassis, Small Form Factor...
  • Supports M ATX and Mini ITX Form Factor Motherboards. Motherboards 6.7” x 6.7” (Mini ITX) ,...
  • Designed for use in either a vertical or horizontal orientation on the motherboard
  • Chamber concept design with optimized cable management space for small form factor builds
  • Stackable and flexible thermal solution. Remarkable expansion. Advance ventilation
  •        Dual-chamber
  •        Expandable case
  •       Exceptional cooling properties
  •        Low noise operations
  •        Shockproof and durable
  •        Comes with dust filters
  • Lack of a fan controller
  • Can be proved a bit noisy because of noise absorbing material



Being in search of the smallest micro ATX case, one of the highly considerable options is CORSAIR CRYSTAL 280X RGB as it comes with complete support with micro ATX motherboards and holds the three tempered glass panels which bestow it with a highly elegant look. It holds a dual-chamber layout design that efficiently holds every component and gives your case a neat and clean look. In case of providing an excellent cooling zone, it comes with space for up to 6 fans of 120 mm for air cooling whereas in case of water cooling you can also place the 240 mm radiator in the roof. Both of the systems results in dissipating heat and keeps the system unstoppable. The case offers a direct airflow path to every part irrespective of the presence of drive cages.

It comes with the 2 fully illuminated RGB fans and offers you a feature of customizable LED up to 32 colors. The fans come with the RGB lighting controller. The dust filters present on the four areas at the front, roof, floor, and power supply unit of the case result in preventing dust from entering inside. The case comes with the storage compartments that can be enhanced; it allows you to add up to 2 drives of 3.5’’ and 3 drives of 2.5’’ without facing any kind of storage issues and untidy case.

To conclude we can say that the case efficiently provides spaces for the expansions and cooling zone for keeping the temperature stable. The RGB fans along with the glass panels give your system containment zone an elegant as well as an attractive look.

CORSAIR Crystal 280X RGB Micro-ATX Case, 2 RGB Fans, Lighting Node PRO Included, Tempered Glass -...
1,243 Reviews
CORSAIR Crystal 280X RGB Micro-ATX Case, 2 RGB Fans, Lighting Node PRO Included, Tempered Glass -...
  • Massive cooling potential with room for up to six 120mm cooling fans, or a 240mm radiator in the...
  • Two included CORSAIR LL120 RGB fans boast a total of 32 individually customizable LEDs, controlled...
  • Three stunning tempered glass panels put your system on display like no other Micro-ATX case....
  • A dual-chamber layout highlights your PC's core components, whilst tidying cables, drives and the...
  • Dual-chamber layout
  • Direct flow path
  • Excellent cooling system
  • Dust filters
  • RGB lighting and controller
  • No USB ports

3.) Cooler Master MCB-Q300L

Cooler Master MCB-Q300L

The Cooler Master MCB-Q300L is one of the cases that can be proved highly supported by the micro ATX form factor. The case comes with the transparent side panel so you can watch inside. The case provides an excellent thermal performance because of its fan as the load on the system like gaming and heavy-duty tasks can result in raising the temperature to the peak which can lead to the malfunctioning and system lagging. The case comes with a fully ventilated design which allows an exceptional airflow to prevent the rise in temperature.

With the airflow, the dust can also be entered into a system. To avoid the dust entrance, it comes with an advanced magnetic dust filter which is perforated from the top, bottom, and front of the panel. The filters magnetically discharge the dust inside and ensure the provision of a clean interior of the case. It does not let your cables into each other because of the motherboard tray present at the backside. The case can be positioned in a horizontal as well as in vertical direction so you can do the placement according to your choice. It comes with the I/O panel having 2 USB ports, headphone and microphone jacks, and power and reset button over it and can be adjusted in 6 different locations.

In a nutshell, we can say that the product is versatile in look because of the transparent panel which enables you to have a full view of inside. An exceptional airflow, a unique magnetic dust filter technology along with the trays, and a flexible system makes it remarkable.

Cooler Master MasterBox Q300L Micro-ATX Tower with Magnetic Design Dust Filter, Transparent Acrylic...
13,801 Reviews
Cooler Master MasterBox Q300L Micro-ATX Tower with Magnetic Design Dust Filter, Transparent Acrylic...
  • I/O panel can be adjusted in 6 different locations and the Case can be positioned: Vertical or...
  • Edge to edge acrylic transparent side panel offers a full view inside
  • Body depth height: Can support normal size ATX power supply
  • Front magnetic design dust filter with open perforated front, top and bottom for high air...
  • Transparent side panel
  • Magnetic dust filters
  • Motherboard tray for cable management
  • I/O panel with 6 locations
  • Acrylic windows are placed instead of tempered glass

4.) CORSAIR Carbide AIR 240

CORSAIR Carbide AIR 240

One of the micro ATX supported cases is CORSAIR Carbide AIR 240 which comes with the three 120mm fans and offers you an exceptional airflow for keeping the system cool and dissipating heat. Because of its direct airflow design, it fully cools the heat-generating components irrespective of the position of the components inside. The case is adaptive to the expansions so in case of upgrading it or adding up the drives it comes with the spacious area. You can also upgrade the CPU cooler because of the cutout design of the backplate. The case also allows you to add a radiator of 240mm for liquid cooling purposes.

As the cables inside can be tangled into each other, so it provides you a cable management feature with its motherboard tray. The tray is adjusted into the dedicated space for cable housing. Because of this management, the interior of the case presents a clean look and airflow path. The case comes with the rubber feet and allows you to place in different positions like standard, inverted, or desktop mode. Moreover, the panoramic window is a part of it that allows you to visualize its interior completely. The USB ports, audio jack, and power buttons are part of the front panel.

In our opinion, the case efficiently fulfills all the requirements that should be present in the best case. Because of the heat dissipation features offered by it along with the expansions and management offered by it, you can ponder over it.

CORSAIR Carbide AIR 240 Micro-ATX and Mini-ITX Case, High-Airflow - Black
807 Reviews
CORSAIR Carbide AIR 240 Micro-ATX and Mini-ITX Case, High-Airflow - Black
  • Stunning, yet small Mini-ITX or MicroATX compatible PC case with excellent cooling performance -...
  • Cleaner layout for the ultimate cooling cube; Case Windowed :Acrylic
  • Adore water cooling? Use two 240mm radiators with Mini-ITX or one 240mm radiator with a dual-GPU...
  • Support for a full length graphics card viewable through full side window panel. Compatible corsair...
  • Direct airflow design
  • Cable management
  • Rubber feet and multiple orientations
  • Panoramic window
  • Spacing is a bit small for placing dual radiators

5.) Cooler Master Silencio S400

Cooler Master Silencio S400

If you are looking for the case that provides all the essential features with the maximum silence, the best option would be Cooler Master Silencio S400 as it completely fulfills your low noise concern because of its sound dampening material. Moreover, it comes with the sound dampening cover as well which is removable so in case you want extra ventilation then you can choose to remove it. The steel front door holds a reversible mounting system so you can open it from any of the sides. The tempered glass and steel panel comes with the full sound dampening technology and allows you to visualize the interiors from the glass.

The case also comes with the silence fans of 120mm which delivers an exceptional cooling with the minimum sound like a whisper. As it comes with the rubber padding so it prevents any kind of noise generated from the vibration. The cage for HDD drive is removable and by removing it the case offers you more space for placing a radiator or extending the space for power supply unit. In the case of I/O panel, it comes with the SD card reader and a 4 pole headset jack.

So we can say that the product is designed by focusing on noise concerns. It provides you heat dissipation with the minimum noise. So if you want to buy a quiet case for your ATX motherboard, go for it.

Cooler Master Silencio S400 mATX Tower W/Sound-Dampening Material, Sound-Dampened Steel Side Panel,...
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Cooler Master Silencio S400 mATX Tower W/Sound-Dampening Material, Sound-Dampened Steel Side Panel,...
  • Sound dampening material – sound dampening material for optimal noise reduction (front, both side...
  • Removable sound dampening cover – The top cover panel can be removed to increased ventilation when...
  • Reversible, steel front door – a reversible mounting system allows the door to open from either...
  • Silence fans – silence FP 120mm PWM (8001400 RPM) fans for a whisper-quiet performance and rubber...
  • Sound dampening material
  • The reversible mounting system of the door
  • Tempered glass and steel panel
  • Silence fans
  • Rubber padding
  • Removable HDD cage
  • USB ports are not available

6.) darkFlash Micro ATX

darkFlash Micro ATX

Another case that can be supported with your micro ATX board is darkflash Micro ATX which comes with a magnetic design for a door opening side panel and give it a highly classy look. Because of the design, it is quite easy to assemble without using any tools. The enhancement in versatility and beauty is achieved by some other features like its front panel which holds a low poly design, the side glass in black which is responsible for showing the light effects in a low profile way. Because of its tempered glass panel, you can completely visualize its interiors. Its painted metal structure adds up more elegance to the case.

As the temperature inside can be raised because of the heavy tasks performed by the system like gaming and graphics usage tasks like video editing which may lead to damage or malfunctioning so as prevention to this harm, the case comes with the internal cooling channels and capability of installing 6 fans of 120mm and 240mm radiators for air and liquid cooling purposes. It offers a wide space for cable management.

To sum up the discussions, we can say that other than an excellent cooling provision, the main focus of the product is its looks. Its elegant design makes it more attractive and unique among competitors.

  • The magnetic design of the door
  • Low poly design
  • Tempered glass panel
  • Cooling channels
  • Wide spaces
  • It does not hold a modular design

7.) InWin 301 Black Tempered

InWin 301 Black Tempered

Your search of the best smallest case for Micro ATX may lead to In Win 301 Black Tempered. The case comes with the detachable tempered glass side panel. With the glass panel, you can have a clear view of the inside. In the case of detaching it, all you have to do is to press a button. Moreover, it comes with the shockproof stand which maximizes its durability. For heat dissipation purposes, it comes with the two 240mm radiators and a single 120mm fan support so you can easily place them according to your requirement. Because of the flexibility offered by the case, you can easily design your cooling zone according to your preferences.

For the enhancement in cooling, it comes with the side panel made up of ventilated steel. With the ventilation or airflow, the dust particles may also enter inside. For its prevention, the case comes with the dust filters at the bottom. Because of lots of cables inside, it doesn’t let them tangled into each other because of its exceptional cable management system. A unique feature offered by it is its front panel which comes with the I/O USB ports, audio jacks, power buttons, and LED display.

We can conclude that in addition to fulfilling all of the requirements, the case I/O Panels is something unique as compared to the usual cases. The whole panel has a quality of illumination and enhances your gaming experience in a dark environment.

InWin 301 Black Tempered Glass Premium Micro-ATX Mini-ITX Tower Gaming Computer Case
438 Reviews
InWin 301 Black Tempered Glass Premium Micro-ATX Mini-ITX Tower Gaming Computer Case
  • Micro ATX and Mini ITX motherboard compatible
  • Detachable tempered glass side panel, remove by pressing a button
  • Clean front panel with stunning LED I/O Display
  • Compact rig supports 240mm radiator at the front & 120mm in the rear
  • Highly durable
  • Tempered glass side panel
  • Fully illuminated I/O ports and LED display
  • Lights on the front panel can’t be switched off

8.) Thermaltake Versa H15 Micro

Thermaltake Versa H15 Micro

One of the noticeable options is Thermaltake Versa H15 Micro. The case comes with an exceptional airflow because of the perforated top panel which offers complete ventilation. For reducing the temperature and heat dissipation the pre-installed fan of 120 mm is a part of it. The case has a cable routing gap inside so it does not break the airflow. Because of the excellent airflow offered by it, it keeps the temperature stable.

The drive bay design of the case results in providing an excellent storage capacity so you can expand and upgrade your system by adding accessories and storage devices. As the case holds a pile of wires inside, which can result in tangling of wire and presenting an untidy look. The case comes with an efficient cable management system with its motherboard tray which hides all the cables and results in the provision of clean case. For adding up the liquid cooling system, it comes with the 240mm radiator capacity at the front and the top.

In closing, we say that the case offers excellent airflow which can result in boosting up the performance and productivity. With excellent design and capacity, it is highly worth noticing and buying.

Thermaltake Versa H15 Micro ATX Mini Tower Computer Chassis with One 120mm Rear Fan Pre-Installed...
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Thermaltake Versa H15 Micro ATX Mini Tower Computer Chassis with One 120mm Rear Fan Pre-Installed...
  • Enhanced airflow: Perforated top panel, heightened food stands, and specially designed cable routing...
  • 1plus2 drive bay: 5. 25” x 1 plus 2. 5”/3. 5” x 3
  • One 120mm rear fan pre installed
  • Supports Mini ITX, Micro ATX (only when DVD ROM is NOT installed) Motherboard
  • Perforated top panel
  • Cable routing gap
  • Cable management system
  • Absence of glass or transparent panel

9.) Thermaltake Level 20 VT

Thermaltake Level 20 VT

The last but not least important product in the list is Thermaltake Level 20VT as it comes with the 4mm thick glass tempered panels which make it feasible to access the components and allows you to completely visualize the interior from the top, front and other two sides. The panels are interchangeable as well. The glass of the panel is resistant to dust and scratches and can be proved durable. The case comes with the dual chamber design it means it is divided into two, upper and lower chamber; the upper chamber is associated with motherboard and PCIe components whereas the lower chamber is for power supply unit and drive bays.

Because of the drive bay design of the case, it allows you to make expansions for adding up devices and liquid cooling system according to your choice. In the case of I/O, it comes with the 4 USB ports, audio jacks, and power buttons. From the 4 glass panels, one panel has perforation which allows a complete airflow out of it.

By and large, the product presents a highly elegant look because of almost fully glass design and lets you completely visualize it from every side. All other requirements are also efficiently fulfilled by it.

Thermaltake Level 20 VT Tempered Glass Interchangeable Panel DIY LCS Chamber Concept Micro ATX...
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Thermaltake Level 20 VT Tempered Glass Interchangeable Panel DIY LCS Chamber Concept Micro ATX...
  • CLEAR VIEW - Four 4mm thick tempered glass panels protect the chassis while providing easy access to...
  • COMPACT DESIGN - Supporting mini ITX and Micro ATX motherboards
  • INTERCHANGEABLE PANEL DESIGN - Change configuration to fit your needs with Symmetrical panels (Top,...
  • COOLING with TEMPERED GLASS – 1 of the 4 tempered glass panels is designed for radiator mounting...
  • Fully tempered glass
  • Highly durable
  • Dual chamber design
  • A bit less ventilation

Buyer’s Guide!

Before buying the Micro ATX case, keep some of the essential factors in mind to get the best one.


first of all, check out that is it compatible with your board in term of form factor or not

Cooling System:

Another important factor you should look for is which cooling technique is followed by its air or liquid. Check out that how much fans are present or can be installed into it, is it offer ventilation, comes with the cooling channels or perforations. As an excellent airflow result, I heat dissipation which can result in boosting your performance.


 If you want the one which performs all the operations in maximum silence then go with the one which assures you about low noise transfer and comes with the sound dampening material.


 You may also look at the ergonomics it means size, shapes, and materials. Most of the cases come with the transparent and glass panels which allow you to visualize your case.


 Convenience comes first so it should be easy to assemble as well


One of the most important factors is capacity, check it out whether it is expandable for adding more devices and cooling systems or not. It will be proved helpful if you want to upgrade your system.

Frequently Asked Questions (FAQ):

Is micro ATX smaller than Mini ATX?

Yes the Mini ATX is smaller than the Micro ATX

How big are micro ATX cases?

The micro ATX cases mostly come in the size of 9.6’’ to 9.6’’

What is the smallest computer case?

The smallest computer case is the one which provides complete compatibility with your form factor, ensures the provision of the cooling zone, and other requirements being smaller in size. It is mainly termed as the smallest containment zone for the system components. The list of products above consists of all such smallest cases.

How small is micro ATX?

The micro ATX size is measured as 244 X 244 mm.

Why is Mini ITX so expensive?

Because it efficiently fulfills all the requirements being smaller in size hence it’s expensive.

Is micro ATX worth it?

Yes, because of the RAM capacity, PCIe slots, and all other exceptional features, it worth it.

Are mini ITX builds worth it?

It offers a bit less space for expansions; moreover, the PCIe slots are not greater n number so according to my opinion it does not worth it.

Is a mini ITX good for gaming?

No, because of its limited RAM capacity and single PCIe slot, it can’t be suggested good for gaming.

Are mini PC worth it? 

Being a gamer you can’t rely on mini PCs as it does not supports the latest games but it can bring efficient performance and comes in a smaller size hence better fits with space. So the decision is yours.

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Last update on 2023-01-19 / Affiliate links / Images from Amazon Product Advertising API