Top 7 Picks For Smallest Micro ATX Case | 2021

smallest micro atx cases

Are you hunting for a high-fidelity Best smallest micro ATX case? Then here you go!

Building efficient PCs with compact form factors has become a trend in this era of modernization. Not only gamers, but people love to use it for personal and professional uses. However, choosing an attractive, well-built, and budget-friendly smallest matx case is slightly challenging because there are plenty of varieties available that belong to different brands.

To make the selection process easier for you, we have enumerated the 7 best micro ATX cases. These are amicable models that meet your requirements for intensive gaming sessions or content creation. Most importantly, they allow you to compile sound cards, capture cards, larger GPUs, motherboards, and other essentials.

Moreover, all of them come with an aesthetic appearance, cable management, accessible ports, cooling fans, PCIe slots, and connectivity options. Even a micro ATX small form factor can provide everything in a single pack that you probably expect from heavy chassis. Typically, we can say micro ATX is the mid-point between mini ITX form factor and mid-tower ATX PC case.

Now, let’s move right into the reviews of the 7 top-rated micro ATX cases.


Smallest Micro ATX Cases At A Glance

Cooler Master MasterBox

Cooler Master MasterBoxTD500

  • Tempered Glass
Corsair iCUE

Corsair iCUE 4000X

  • 17.6 Pounds
  • Tempered Glass
NZXT H510i

NZXT H510iH510i

  • 18 Pounds
  • Tempered Glass
Cooler Master Silencio mATX

Cooler Master Silencio mATX S400

  • 15.5 Pounds
  • Steel Alloy
Cooler Master Cosmos

Cooler Master Cosmos C700M

  • 52.5 Pounds
  • Tempered Glass – Al
be quiet!

be quiet! Dark Base 700

  • 29 Pounds
  • Tempered Glass
ROSEWILL  Mini Tower

ROSEWILL Mini TowerMicro ATX

  • 7.8 Pounds
  • SECC Steel

Best Smallest mATX Case Reviews – 2021

Our Top Pick

Cooler Master TD500

  • Color: White
  • Case Type: Mid Tower
  • Case Material: Tempered Glass, Steel
  • Dimensions: 19.4 x 8.55 x 18.5 inches
  • Motherboard Support: ATX, E-ATX, micro-ATX
  • Weight: 17.7 pounds
  • Max Cooler Height: 6.5 inches
  • Cooling Methods: Water
  • Expansion Slots: 7
  • USB Ports: 2 USB Gen 1 ports

Cooler Master is one of the renowned manufacturers of computer hardware and is based in Taiwan. They have been producing computer cases, power supplies, computer peripherals, liquid CPU coolers, and cooling pads for more than 20 years. Cooler Master MasterBox TD500 ATX mid-tower is one of the best products. Due to its superior and responsive structure, it has gained enormous ratings and buyer satisfaction.

However, the crystalline tempered glass material of the case ensures durability. While the polygonal mesh front panel has a three-dimensional contour that provides consistent airflow to keep the system cool during hours of use. Even the system has dust filtration technology to make sure a clean setup. The side panel also offers a crystalline design for an aesthetic look and multi-times strength.

If we talk about its cooling system, three RGB fans offer a lightning flood with adequate airflow. Besides, there are two radiators of 36cm each that are embedded on the front panel and top panel to provide extreme cooling for the system. Another significant advantage is that it provides support for up to seven fans on the rear, front, and top.
Furthermore, this white mesh design comes with an ARGB lighting system that looks amazing, especially at night time. At the same time, the ARGB fans system expands the colors around. Even the case provides pretty fine space for adjustments with a volume of about 40 liters.

Most importantly, this Master Cooler case can support ATX, Mini-ITX, mATX, E-ATX, and SSI CEB motherboards. By removing the HDD cage, you can place large PSUs of size up to 11.6 inches. However, the user can get sufficient space behind the motherboard tray for cable management. Besides, the I/O panel of the system has two USB Gen-1 ports and some other ports for audio input and output.

Last but not least, there is an ARGB controller with a splitter cable that is built on a hardware kit. There are two drive bays of 3.5 inches and four drive bays of 2.5 inches. Even it has seven expansion slots to facilitate the user with multiple connections. Moreover, this TD500 mesh panel comes with a 2-years manufacturing warranty to ensure a credible purchase.

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  • Can support multiple motherboards
  • Includes various slots and drive bays
  • ARGB controller and lighting system
  • Allows easy cable management
  • Responsive cooling system with three fans
  • Crystalline design with contoured panel


  • There is no front dust filter

Our Verdict

In our list of recommendations, the Cooler Master TD500 mid-tower ATX case is on the top. This model is equipped with the latest cooling fans, dust-filtration technology, multiple expansion slots, cable management system, ARGB lighting system, and USB ports. Due to its excellent performance and superior construction, it deserves this position, and you should have an eye on this model.

Runner Up RGB Micro ATX Case

Corsair iCUE 4000X

  • Color: White
  • Case Type: Mid Tower
  • Case Material: Tempered Glass, Steel
  • Dimensions: 17.8 x 9 x 18.3 inches
  • Motherboard Support: ATX, E-ATX, micro-ATX
  • Weight: 17.6 pounds
  • Max Cooler Height: 6.5 inches
  • Cooling Methods: Air
  • Expansion Slots: 7
  • USB Ports: 2 (Type 3.0 and 3.1)

Corsair is another industry-leading brand that manufactures high-quality computer hardware products. Being an innovative design, this 4000X model offers an all-in-one pack. Corsair ICUE 4000x is a compact yet efficient ATX case with excellent potential for expansion without being heavy. While including ICUE lightning Node core and CORSAIR ICUE software, this model can completely control and adjust the RGB lighting for up to six fans. Construct it how you need today, with a simple advanced way for tomorrow.

While considering features, this model has a spacious interior that allows you to install six 12cm or four 14cm cooling fans, accompanying many radiators comprised of 28cm in the roof and 36cm in the front. It allows you to fix two 2.5-inch SSDs and two 3.5 inch HDDs with movable SDD trays that can be shifted to the front PSU cover.
With a vertical PCle setup and an optional arrangement, you can exhibit your GPU and keep it safe simultaneously. The high airflow mid-tower casing is to shield the hardware parts. This model also supports the ATX motherboard to supply a prominent number of expansion slots, peripheral ports, and PCI slots with advanced heat dissipation power.

As far as if you are concerned about connectivity options, then you can see that the modern front Input-output panel involves a combination of microphone and audio jack, USB 3.1 Type-C port, and USB 3.0 port. Moreover, this Corsair case comes with adequate cable management and customizable RGB lighting.
Behind the motherboard, an adequate space of 25 mm is available that you can use for cable attachments. Besides, the consistent airflow lets the system perform at maximum strength. Because the system is equipped with a ventilation channel for airflow. Last but not least, you can show off your top-notch parts and RGB lighting with a simple slide-on and slide-off attach method.


  • Powerful cooling system
  • SSD trays are easy to maneuver
  • RGB lighting looks adorable
  • Allows quick cable adjustments
  • Well-built with rich material
  • A wide array of expansion slots


  • Airflow through the front panel is not so good

Our Verdict

If you are searching for a mid-tower ATX case that can be used with other motherboards and provide you comfortable outcomes, you should buy Corsair iCUE 4000X. This model includes RGB lighting, multiple ports, and amicable adjustments. Even it comes at an adequate price.

Best Tempered Glass PC Case

NZXT H510i

  • Color: White
  • Case Type: Mid Tower
  • Case Material: Tempered Glass, SGCC Steel
  • Dimensions: 16.8 x 8.3 x 18.1 inches
  • Motherboard Support: ATX, MINI-ITX, micro-ATX
  • Weight: 18 pounds
  • Max Cooler Height: 6.5 inches
  • Cooling Methods: Air
  • Expansion Slots: 7
  • USB Ports: 4 (Type-A and Type-C)

Producing stylish models with extreme functionality is the aim of the NZXT H-Series. Even they are maintaining their words with incredible innovations. In their best products, NZXT H510i is a more advanced compact mid-tower ATX case. Because of the limited size, things got a touch tight as the remaining hardware got together, but still, there was some space.

Regarding design, the tower looks pretty good while running after the insertion of every single component. The tightened side glass panel involves two built-in RGB lights resulting in making the gaming station more flaunt by bringing shine to the tower room. The cable tracks in the tower helped keep the mess under control, and everything in the result fits perfectly.
However, when you compare the H510i to the H510 elite, it is difficult not to feel a little bit of jealousy for that tempered glass front panel. Though the open glass panel is just limited to one wall, the appearance of this model still looks shiny.

After finishing the installation of pieces and getting the lights up, you can play different games like Arena, Destiny 2, and World of Warcraft, etc. As anticipated, there was no hindrance during a performance, and the tower figured out how to keep a proper temperature all through several gaming sessions.

Overall, NZXT is one of the best mid-tower PC gaming cases with undying quality. There are multiple I/O ports to provide you convenient connections room. Most importantly, this case can be used with different ATX motherboards. Last but not least, it comes in two attractive colors, black and white.

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  • Three fans channel cooling system
  • Pre-installed channels and straps
  • Hue RGB lighting channels
  • Built-in mounting bracket for GPU
  • Well-made with durable material
  • Includes a faster microprocessor


  • Lack of cable management
  • HDD bay is not removable

Our Verdict

If you want to enjoy intense gaming sessions with a high-fidelity micro ATX gaming PC case, then NZXT H510i would be an ideal choice in a mediocre price range. With healthy material and delicate structure, this form factor will meet your personal and gaming requirements.

Best White Case for AirFlow

Cooler Master S400 mATX

  • Color: Grey
  • Case Type: Mini-Tower
  • Case Material: Steel Alloy
  • Dimensions: 8.3 x 16.5 x 16.05 inches
  • Motherboard Support: Mini-ITX, micro-ATX
  • Weight: 15.5 pounds
  • Max Cooler Height: 6.52 inches
  • Cooling Methods: Air
  • Expansion Slots: 4
  • USB Ports: 2 (3.0 Gen)

Being the best manufacturer, Cooler Master has produced a diverse range of high-quality equipment. People from all over the world love their products. The Cooler Master S400 is one of the best micro ATX slim cases, which gives you good value for money.

However, the Silencio uses sound damping materials in front, both side panels, and top for effective noise reduction. If you want to increase ventilation, you can remove the top panel’s Sound Dampening Cover.

There are eight drive bays that support HDD and SSD of different sizes and volumes. Besides, compatibility ports like USB, SD card reader, and headset jack help you to enjoy every moment. However, the steel panels provide firm support and stability on both front and rear sides.

Moreover, there is a reversible steel front door, which means you can open the door from either side. There are silent FP 12cm PWM fans that quietly perform, and rubber padding reduces noise vibration. The front input-output panel features a single four-pole headset design and an SD card reader. At the same time, there is sufficient space to install a DVD drive behind the front panel, and you can also install 3.5-inch drives on the right side. Another advantage is that it comes with a 20cm MB tray for cable routing.

Conveniently, this micro ATX small form-factor case is equipped with active coolers and noiseless RPM fans that keep the PC functioning perfectly. Even the sturdy material panels absorb sound efficiently. However, there are dust filters on the top, front, and bottom that ensure cleanliness throughout the hours of use.


  • Equipped with passive coolers
  • Made of robust material
  • Lots of drive bays for HDD and SSD
  • Includes cable routing tray
  • Dust filters on three sides
  • Comes with a front radiator and cage


  • Thermal performance is low

Our Verdict

With easy controls and emerging features, this is the best micro ATX smallest case for multi-use. This model has a passive cooling system, multiple ports, and dust filters. You can get this lightweight ATX case for less budget.

Best High End ATX PC Case

Cooler Master Cosmos C700M

  • Color: Grey, Black
  • Case Type: Full-Tower
  • Case Material: Tempered Glass, Aluminum
  • Dimensions: 25.5 x 12 x 25.5 inches
  • Motherboard Support: Mini-ITX, Micro-ATX, ATX
  • Weight: 52.5 pounds
  • Max Cooler Height: 7.8 inches
  • Cooling Methods: Air, Water
  • Expansion Slots: 8
  • USB Ports: 5 (3.1 Type-C, 3.01 Gen)

The game is not over, Cosmos C700M full-tower ATX case is another best case that belongs to Cooler Master. Even this design has an excellent micro ATX standoff layout. The pre-installed system of this model has eight standard expansion card slots on the rear.

There is an opening to bypass the cables for vertically mounted video cards. An opening for a bottom-mounted PSU is also there. A suction-fan mounting location is available as well, which provides maintenance for both 12cm and 14cm fans. The exhaust fan mounting location is placed with slotted screw holes and aids you in managing the alignment of the fan for regular airflow.

On the backside, there is a detachable plastic frame and located in place by magnets. Since the magnets perform very well by holding the rear panel in place, the panel blows out if it is tried out to use as a clench while picking up the frame. A huge plastic mesh filter is detachable from the front and covers the entire base of the frame.

Moreover, two big cast aluminum bars with rubber pads keep the case nearly an inch above the surface. Some other features are double-layer black mesh lining, openings in the facing panel, and large detachable plastic mesh filters. These plastic mesh filters wrap the diameter of the case’s facing and lower side. You don’t need to move this bulky frame for cleaning and preservation because the front and base filters work perfectly.


  • Multiple GPU configurations
  • Slotted screw holes for aids
  • Plastic frame is detachable
  • Immersive curved glass panel
  • Includes GPU riser cable
  • Comes with a flexible interior layout


  • Healthy price tag
  • Heavy in weight

Our Verdict

If you are hunting for a responsive full-tower ATX case, then the Cosmos C700M ATX model is the best for you in our list of recommendations. This case comes with detachable filters, rubber pads, a robust frame, and different connectivity options. However, this ATX chassis is slightly more expensive, but spending a few bucks extra can give much more.

Best Mid Tower ATX Case

Be Quiet! BGW23 Dark Base 700

  • Color: Black
  • Case Type: Full-Tower
  • Case Material: Tempered Glass, Steel
  • Dimensions: 23.5 x 12.8 x 23 inches
  • Motherboard Support: Mini-ITX, Micro-ATX, ATX, E-ATX
  • Weight: 29 pounds
  • Max Cooler Height: 7.1 inches
  • Cooling Methods: Air
  • Expansion Slots: 9 (7 Horizontal, 2 Vertical)
  • USB Ports: 3 (3.1 Type-C, 3.01 Gen)

With a ton of features, the Dark base 700 is embedded with an extensive laminated glass side panel attached by rubber-coated supporting pins and thumbscrews. The protected side panel has a slightly painted surface. This laminated safety glass can be shifted towards the reverse side of the chassis.

However, there are RGB LEDs that play their own role in the adorable appearance of the case. The complete base of the chassis has one large filtered hole with ascending locations for extra fans and power supply aeration. There are four rubber-coated plastic feet that hold on to the case from moving around on your desk in a large magnitude.
Furthermore, you can obtain seven expansion card slots, an opening for your power supply, and a motherboard area toward the rear. The back fan ascending area (supports both 12cm and 140cm fans) is furnished with a silent wings 14cm fan. You must consider the design of this chassis filtration system carefully.

In Dark Base 700, each input in the fan ascending location provides a washable nylon fan filter. The approach to filters requires separating the facing panel. Such a creative design indicates that even if the front and base filters are prolonged, cleaning and continuation are easy. In addition, you don’t need to move your PC. Just remove the front panel and drop the filters out.

The external surface of this chassis is smooth with gracefulness. There is the absence of fan holes, handles, and grilles, so this factor is entirely satisfactory for describing the appearance of this chassis. A small portion of slots are fitted in the rear side of the top panel, and it would be uncovered otherwise.

be quiet! Micro-ATX is a highly recognized model for the construction of power supplies. This emphatic lower-case designer has established heavy supporters in the admirer community by making silent and peaceful PC components. This chassis is manufactured from plastic and aluminum and includes a steel frame as well.


  • Adorable design with steel frame
  • Pre-installed fans for cooling
  • Multiple expansion slots
  • Rubber coated pins for support
  • Laminated safety glass panel
  • Equipped with fan filters


  • There is no HDMI port
  • Slightly heavy in weight

Our Verdict

be quiet! Dark Base 700 is an excellent choice for extreme thermal performance and intuitive controls. This versatile case is equipped with tempered glass panels, multiple expansion slots, base filters with a charming appearance

Cheap mATX Case


  • Color: Black
  • Case Type: Mini-Tower
  • Case Material: Tempered Glass, SECC Steel
  • Dimensions: 13.8 x 6.9 x 13.9 inches
  • Motherboard Support: Micro-ATX
  • Weight: 7.8 pounds
  • Max Cooler Height: 5.52 inches
  • Cooling Methods: Air
  • Expansion Slots: 4
  • USB Ports: 2 (2.0 Gen)

The Rosewill FBM-01 micro ATX SSF case is compact and offers leading features and practical work. Such a PC case is lightweight and brilliantly sharp. The firm design adds more elegance to these attributes and makes it well-suited for office and home usage.

These cases arrive with enough interior area that enables you to fix a standard ATX PSU, a micro ATX motherboard, a 15cm high cooler, and a 30cm large graphics card. In order to keep your set up operating at maximum performance, double pre-loaded fans create excellent aeration and eliminate heat.

This case provides all the essentials you need to develop a serious gaming tool in a modish design and economical budget. Such a case can assist a small ATX or mini ITX motherboard and delivers a PS2 power supply. Two fans, including one 12cm front fan and the second 8cm back fan, are pre-installed. A broad side window allows you to watch your setup.

To provide a convenient approach for this computer case at the front, two USB and audio in/out ports are available. Maximum air circulation is provided to the users by ROSEWILL FBM-01. Moreover, the FBM-01 micro ATX small case has a robust construction with discharged PCI-E slots and is matchless for AMD and Intel systems.
Besides these attributes, FBM-01 offers you an excellent choice for your office desktop with a beautiful front panel and LED power button. The sleek and modern tiny tower adds more elegance to its stylish design as well.


  • Best for AMD and Intel systems
  • Pre-installed fans for cooling
  • Multiple expansion slots
  • Supports different ATX systems
  • Includes LED power button
  • Sleek and modern ATX tower


  • Swap bays are slightly tight
  • There is no rear fan

Our Verdict

If you want to buy a slim micro ATX case with complete functionality, then the ROSEWILL FBM-01 case could be an ideal choice for you. With an elegant design and plenty of attributes, this model comes at an affordable price.


Well, this is pretty much about the 7 best smallest mATX cases for advanced PCs. Purchasing the right one from the crowd of brands and models becomes challenging and even risky. To keep you away from the trouble of wandering around, we have enlisted some high-end micro ATX cases with handles that provide a valuable experience of technology.

These cases are equipped with cooling fans, lighting systems, dust filters, multiple expansion slots, USB ports, and many more options to facilitate the users. Besides, all of them can support different ATX motherboards to navigate easily. They are meticulously designed models and give you an actual return on your chunk of investment.

However, all of these micro ATX cases are best to use because they offer all the features that you are looking for. To make your selection even more accessible and quicker, we recommend buying the Cooler Master TD500 mid-tower case. But indeed the choice will depend on your budget and requirements. Consecutively, if you are a gamer or content creator, you should walk through our list for a reliable purchase. Good Luck,

Can you put a micro ATX motherboard in a mid-tower case?

Yes, you can put a micro ATX motherboard in a mid-tower case. Because in comparison to micro ATX vs. mid-tower ATX, a mid-tower can support a micro-ATX motherboard but not an EATX motherboard. However, any chassis with a large-size motherboard can also support a smaller ATX motherboard.

Can you put a micro ATX motherboard in an ATX case?

Yes, you can put a micro ATX motherboard in an ATX case. Due to the comparison of micro ATX vs. ATX size, a full-size case can support any type of micro ATX motherboards. Because micro ATX motherboards usually have subset mounting points that are used in large size ATX motherboards. But the I/O panel is identical for cases.

Difference between ATX and micro ATX?

The main difference between ATX and micro ATX is the size of the form factor. ATX cases are bigger than micro ATX and mini-ITX. Usually, ATX cases come in a rectangular shape whose size measures about 35cm. Conversely, the micro-ATX cases have a square shape that measures approximately 25cm in width and length is nearly equal to 6.5cm.

What’s the smallest micro ATX case?

NZXT H400i. It is the smallest mATX case till now with features that you won’t expect to be in this case due to its size.

1. Supports Water Cooling
2. Quiet PC Case – Noise Reduction Enabled
3. A Bit Heavy due to the build Quality
4. Also Comes with RGB Fans