11 Smallest Micro ATX Cases in 2021 (Reviews & Buyer’s Guide)

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We bet, portability is the last thing that crosses your mind while building bespoke gaming PCs or buying a desktop replacement laptop. Then again, you must be unaware of what micro ATX cases bring to the PC-building circuit. Besides striking the perfect balance between towering ATX systems and insanely popular, mini ITX setups, mATX units come forth as resilient and future-proof motherboards.

Put simply, an mATX motherboard tends to combine the power of the ATX system with the small form factor of an ITX rig. As it helps the gamers create a perfectly balanced system that can deliver cutting edge performance without compromising on space. Then again if you aren’t sure about the utilities of a micro ATX case, you must be a PC-building novice who simply needs direction.

Micro ATX cases, especially the good ones, have the requisite number of slots and adequate size for accommodating gaming rigs, storage drives, and best-in-class cooling solutions. Besides, certain mATX cases come with built-in cooling solutions, which can readily supplement your game-playing aspirations. Furthermore, you can also consider cases featuring relevant mounts, vents, or filters to facilitate better cooling at the highest possible fan speeds. 

Not just that, if you are thinking of building your own rig, the best way to go is to “start from scratch.” Therefore, one of the first things you have to buy is a computer case, which doubles down as a breathing space for all your processing components and thermal solutions. Depending on the motherboard that you are going to use, there are a variety of small ATX cases are available in the market.

However, to pick the best ATX case, you need to ascertain the budget and the existing specifications. For instance, professional gamers who are sold for performances must not shy away from mid-tower ATX cases, as they are the best selections when cooling and scalability are concerned.

Mini ITX cases lack requisite cooling setups but are extremely portable and often advocate in favor of Max-Q GPUs and components featuring smaller footprints. Budget-users or gamers, however, should opt for mATX cases, specifically upon analyzing the build quality, availability of expansion slots, overall dimensions, built-in Fans, if any, wattage, additional features, and a host of other factors.

11 Best Smallest Micro ATX Cases in 2021

ImageNameFeaturesCheck Price
Corsair Crystal 280X
  • Build Material: Steel, Plastic, and Tempered Glass

  • Power: 750W

  • Compatibility: Mini-ITX and Micro-ATX

  • Side-Panel Windows: Yes

  • Expansion Slots: 4

  • Ports: 2x USB 2.0, 2x Audio Ports

  • Dimensions: 15.67 x 10.87 x 13.82 inches
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Cooler Master Silencio S400
  • Build Material: Steel and Plastic

  • Power: 350W

  • Compatibility: Mini-ITX and Micro-ATX

  • Side-Panel Windows: No

  • Expansion Slots: 7

  • Ports: 2x USB 3.0, 1x Audio Ports, SD card reader

  • Dimensions: 8.27 x 16.46 x 16.06 inches
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Cooler Master MasterBox Q300P
  • Build Material: Steel and Plastic

  • Power: 300W

  • Compatibility: Mini-ITX and Micro-ATX

  • Side-Panel Windows: Yes

  • Expansion Slots: 4

  • Ports: 2x USB 3.0, 1x Audio Port

  • Dimensions: 20.08 x 10.90 x 20.74 inches
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Thermaltake Core V21
  • Build Material: Steel and Plastic

  • Power: 750W

  • Compatibility: Mini-ITX and Micro-ATX

  • Side-Panel Windows: Yes

  • Expansion Slots: 5

  • Ports: 2x USB 2.0, 2x Audio Ports

  • Dimensions: 13.2 x 12.6 x 16.7 inches
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MasterBox Q300L
  • Build Material: Steel and Plastic

  • Power: 750W

  • Compatibility: Mini-ITX and Micro-ATX

  • Side-Panel Windows: Yes

  • Expansion Slots: 4

  • Ports: 2x USB 3.0, 1x Audio Port

  • Dimensions: 15 x 9.05 x 15.23 inches
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Antec Slim VSK2000 U3
  • Build Material: Steel and Plastic

  • Power: 300W

  • Compatibility: Mini-ITX and Micro-ATX

  • Side-Panel Windows: No

  • Expansion Slots: 4

  • Ports: 2x USB Type-A, 2x Audio Port

  • Dimensions: 18.6 x15.9 x 7 inches
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InWin 301
  • Build Material: Steel and Glass

  • Power: 750W

  • Compatibility: Mini-ITX and Micro-ATX

  • Side-Panel Windows: Yes

  • Expansion Slots: 4

  • Ports: 2x USB Type-A, 1x USB Type-C, 2x Audio Ports

  • Dimensions: 14×3 x 7.4 x 14.9 inches
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Thermaltake Versa H18
  • Build Material: Steel and Plastic/li>
  • Power: 750W

  • Compatibility: Mini-ITX and Micro-ATX

  • Side-Panel Windows: Yes

  • Expansion Slots: 4

  • Ports: 2x USB 2.0, 1x USB 3.0, 1x Audio Port

  • Dimensions: 15.66 x 8.11 x 17.27 inches
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Cooler Master MasterBox NR600
  • Build Material: Steel and Plastic

  • Power: 550W

  • Compatibility: Mini-ITX and Micro-ATX

  • Side-Panel Windows: Yes

  • Expansion Slots: 7

  • Ports: 2 USB 3.0, 1x Audio Port

  • Dimensions: 21.67 x 21.26 x 11.02 inches
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NZXT H510
  • Build Material: Steel and Glass

  • Power: 750W

  • Compatibility: Mini-ITX, Micro-ATX, and ATX

  • Side-Panel Windows: Yes

  • Expansion Slots: 7

  • Ports: 1x USB Type-C , 1 x USB Type-A, 1 x audio port

  • Dimensions: 16.85 x 8.27 x 18.11 inches
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darkFlash DLM21
  • Build Material: Steel and Plastic

  • Power: 750W

  • Compatibility: Mini-ITX, and Micro-ATX

  • Side-Panel Windows: Yes

  • Expansion Slots: 4

  • Ports: 1x USB 3.0 , 2 x USB 2.0, 1 x audio port

  • Dimensions: 14.5 x 8.2 x16.5 inches
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We understand how diverse the mATX motherboard selections are and, therefore, our experts have taken time out to test more than 82 units. Apparently, we shortlisted 11 of the most functional mATX cases, catering to almost every price segment and usage pattern.

In addition to enlisting the names, we have also added their salient features, reviews, pros, and cons, precisely to help you make informed buying decisions.

  • Build Material: Steel, Plastic, and Tempered Glass
  • Power: 750W
  • Compatibility: Mini-ITX and Micro-ATX
  • Side-Panel Windows: Yes
  • Expansion Slots: 4
  • Ports: 2x USB 2.0, 2x Audio Ports
  • Dimensions: 15.67 x 10.87 x 13.82 inches

To be honest, the Corsair Crystal 280X is one of the best mATX cases in the retail arena, flaunting a cube-style chassis, made of steel, plastic, and the hardened tempered glass. The aesthetic layout is further completed by the triple-sided glass paneling, which accentuates the look of the all-black layout.

Coming to the interior space, we were more impressed by the compatibility of this case with a Mini-ITX motherboard, as it left a decent amount of breathing space for the fans to work at their complete potential. What impressed us the most is the dual-chamber layout, allowing you to fit in GPU units that measure close to 11.8 inches!

Besides, if cooling is one of your primary concerns, Corsair lets you fit in coolers measuring 5.9 inches in terms of height. In case you are more interested in cooling fans to keep dust build-up to a minimum, this ATX case supports 6, 120mm fans or the future-proof, liquid cooling option offered by three 240mm radiators. 

For first-time PC builders, this is easily the best ATX case to invest in as the dual-chamber layout ensures zero wire tangles and a cleaner representation of internal components.

The rear chamber is the unit where you can fit in the wires and cables for achieving a minimalistic layout. Coming to storage, you get at least five internal bays to work with. However, it is the dedicated storage compartment that impressed us the most.

However, the Corsair Crystal 280X steals the show when personalization is concerned. For starters, you get access to the LL 120 corsair RGB fans, which look great and flaunt an immersive array of 32 colorful LEDs. Connecting the same is the Node Pro digital controller, allowing you to manage the designs and personalizations, as per your preference.

The side panel window in play, regardless of the variant you opt for, allows you to peep into the internal association. Furthermore, you can also select the non-RGB variant, if budget is a constraint. Based on the chassis structure, the mATX case weighs close to 15.65 pounds. Moreover, this is one of the few cases to feature 4 expansion slots, specifically to connect sound cards, wireless adapters, and more.

Extrapolating the design further, the Corsair Crystal 280X features dust filters at the roof, front, and even the floor of this ATX case, which helps with dust control. Not just that, here is one mATX case capable of directing cool air to the hottest possible components. As far as the port arrangement is concerned, you get two USB 2.0 slots followed by one microphone and one speaker output.

Overall, this is one of the best mATX cases in the market, which can also be used for mini-ITX motherboards. As far as our PC configuration is concerned, we used the same to incorporate Ryzen 7 2700X processor, a single Corsair h100i radiator fan, GTX 1660 Ti GPU, EVO-compatible SSDs, and other components.

Pros
  • Dual-chamber layout
  • A triple tempered glass panel
  • Excellent dust filtration
  • Support for 6 fans
  • Five storage bays
Cons
  • Lacks Type-C port
  • Thermal performance could have been better
  • Build Material: Steel and Plastic
  • Power: 350W
  • Compatibility: Mini-ITX and Micro-ATX
  • Side-Panel Windows: No
  • Expansion Slots: 7
  • Ports: 2x USB 3.0, 1x Audio Ports, SD card reader
  • Dimensions: 8.27 x 16.46 x 16.06 inches

The Cooler Master Silencio S400 is probably your best bet if you are interested in silent mATX cases. While the product still stands tall like a mid-tower ATX case, it is compatible with Micro and mini-ITX motherboards.

Coming to the standard set of attributes, we get access to the ventilated top panels and the innovative sound dampening cushioning that makes way for whisper-quiet usage. The gadget is still quite sleek despite the occasional bells and whistles. While the Cooler Master Silencio S400 doesn’t pair in a side-panel window, it is the reversible front cover that takes the cake.

As far as fan support is concerned, this small and sleek micro ATX case is more than capable of incorporating 6 hush entities. Besides, you can also make use of the radiator support, with Cooler Master allowing you to stack in two at the top, four at the front, and one radiator at the rear. Storage-wise, there are four slots each for HDD and SSD expansions followed by a solitary ODD storage unit.

However, the HDD cage is probably the most versatile aspect of this mATX case, which can be shifted back to incorporate the radiator or moved to the front for getting in a PSU. However, you need not purchase every fan there is as two Silencio 120mm fans come preinstalled with the package. What stands out is the rubber padding, allowing you to get a noise-free experience.

While the front and top-most ventilation add to the credibility of this mATX case, it is the futuristic design that validates every purchase decision you make. Besides, the mounting system at the front comes with reversible support and is further bolstered by the inclusion of rubber stompers and magnets. As far as expansion slots are concerned, especially for accommodating wireless cards, there are 7 units to rely on.

This ATX case also offers two USB 3.0 ports, which are faster as compared to the USB 2.0 slots. Besides, you also get access to a combo jack with audio-cum-microphone support. Furthermore, there is a front card slot on offer for the SD card, provided you plan on expanding the storage support.

As far as the structural footprint is concerned, the steel-clad chassis flaunts hardened plastic accents. The vent cover for sound countering is flexible enough and can be done away with to make room for fan filters. In terms of weight, this mATX case is tagged at 15.5 pounds. While this is easily one of the best micro-ATX cases to invest in, you can also opt for a more adventurous model featuring tempered glass, side-window paneling.

Pros
  • Silent operation
  • Sturdy build quality
  • The front panel is reversible
  • Comes with a dedicated ODD slot
  • Two built-in Silencio fans
Cons
  • Thermal performance could have been better
  • Doesn’t include Type-C ports
  • Build Material: Steel and Plastic
  • Power: 300W
  • Compatibility: Mini-ITX and Micro-ATX
  • Side-Panel Windows: Yes
  • Expansion Slots: 4
  • Ports: 2x USB 3.0, 1x Audio Port
  • Dimensions: 20.08 x 10.90 x 20.74 inches

The Cooler Master MasterBox Q300P is one of the more affordable mATX cases in the market, boasting of an adjustable Input-Output panel and an unmatched ability to work in at least 6 different settings or orientations. However, our experts were most impressed by the adjustable handles, which allow you to carry the system across locales.

Another interesting feature has to be the modular orientation that allows you to use the mATX case either in the vertical or horizontal position. Then again, the ATX case also offers at least 28mm of cable management space to keep tangles at bay. However, despite being a mid-tower ATX case, which is more or less compatible with mATX and mini-ITX motherboards, the component clearance on offer is more than adequate.

This means, if you are interested in pairing additional coolers with the case, a height of 159mm I allocated for the same. For external GPUs, there is an allocated length of 360mm whereas a 160mm long, PS2 power supply can also be accommodated. This ATX case is also good at dust filtering with enhancements added to the top, front, and bottom panel.

In case you are interested in thermal performance, the Cooler Master MasterBox Q300P is capable of accommodating at least 5 modules for keeping the temperature within optimal standards. Provided you want to add in radiators, this ATX case allows you to pair a maximum of three units. The company sweetens the pot further by pairing in three pre-installed fans, which in tandem can still achieve decent thermal performances.

What impressed our experts the most is the efficient conglomerate of storage slots, expansion modules, and ports. Firstly, this mATX case makes room for two 2.5” drives, preferably the SSDs. Secondly, one standalone 3.5” hard drive bay is also offered. As far as expansion slots are considered for pairing sound cards and other resources, the Cooler Master MasterBox Q300P comes equipped with four separate units.

Cooler Master pairs in two USB 3.0 ports for unhindered data transfers followed by a solitary Audio port with support for High-Definition acoustics. Nonetheless, this is one of the better looking, mATX cases in the retail space, featuring RGB-inspired fans, transparent side-panel windows, and edge-to-edge acrylic layering. Besides, this gadget weighs close to 14 pounds, which is still a standard mark considering the four adjustable handles in play.

Overall, the Cooler Master MasterBox Q300P is one of the most flexible and easy-to-use mATX cases, provided you are looking for a dedicated RGB controller and a splitter for added functionality.

Pros
  • Three internal storage bays
  • Transparent side panels
  • RGB LED-powered Fans
  • Exceptional accessory clearance
  • Dedicated filters at strategic locations
  • Compatible with latest RTX 30-series GPUs
Cons
  • Lacks Type-C port
  • No external storage bays
  • Build Material: Steel and Plastic
  • Power: 750W
  • Compatibility: Mini-ITX and Micro-ATX
  • Side-Panel Window: Yes
  • Expansion Slots: 5
  • Ports: 2x USB 3.0, 1x Audio Port
  • Dimensions: 13.2 x 12.6 x 16.7  inches

For raw performance seekers, the Thermaltake Core V21 is the perfect ATX case to invest in. While it is originally hailed as a micro-ATX case, it is still compatible with the mini ITX Motherboards, as well. Besides, this is one of the best additions to the Core V series of cases, best known for the effective thermal solutions in play.

Before we move onto the complex set of attributes, it is the dual orientation support, associated with the Thermaltake Core V21 that makes an appearance. Besides, the overall entity clearance of this mATX case is also class-leading as it is more than capable of including a 200mm front panel fan for achieving the best in class thermal performance.

However, if you have a pretty beefed-up specs sheet to rely on, the Thermaltake Core V21 is accommodative of 14 fans, which is the maximum limit, depending on the size of the units. In case you are interested in radiators, a maximum of 8 separate units can be accommodated with ease. As far as the storage support is concerned, there are six separate bays in total, with three dedicated towards 2.5” SSDs and three for the 3.5” HDDs.

The Thermaltake Core V21 is easily one of the most potent ATX cases in the retail arena to make room for liquid and even air-based cooling setups. Therefore, if future-proofing the ATX case is one of your priorities, you should persist with the Core V21.

If you are interested in upgrading the existing set of specifications with sound and wireless cards, the Thermaltake Core V21 has a lot of potential, considering the availability of 5 expansion slots. For high-end gamers who are interested in wattage, the 750W association can be upgraded up to 1500W, in case you get the right PS2 setup to work with. As far as ports and connectors are concerned, you get access to two USB 2.0 slots followed by a hybrid audio port with HD output.

From a structural perspective, the mATX case is made of steel but doesn’t let go of the plastic accents, precisely to keep the case temperature under control. Besides, this is one of the few cases to offer a transparent side window that allows you to peep in and get a hang of the cable arrangement and fan setup.

Then again, what impressed our experts the most is the brilliant structural setup, relevant to the chamber concept. This means the Thermaltake Core V21 is one of the few mATX cases to be segregated into an upper chamber for better cooling and a lower chamber for including storage bays and the power supply. Regardless of the modular and optimized chassis, the quality of ventilation offered by the Thermaltake Core V21 is best in class, owing to the classified selection of mounting points and filters.

When it comes to the weight, this ATX case weighs 14.3 pounds, which is still acceptable considering the chambered layout and provision of multiple fans. In conclusion, if you want to set up a pretty beefed-up personal computer with the onus on thermal excellence, the Thermaltake Core V21 is the most cost-efficient mATX case to invest in.

Pros
  • Flexible orientation 
  • Exceptional thermal performance
  • Chambered layout
  • 5 expansion slots to rely on
  • Durable chassis
  • A great choice for Quadro, RTX 30-series, and Tesla cards
Cons
  • Cable management might be an issue
  • Overkill for less-powerful PCs
  • Build Material: Steel and Plastic
  • Power: 750W
  • Compatibility: Mini-ITX and Micro-ATX
  • Side-Panel Window: Yes
  • Expansion Slots: 4
  • Ports: 2x USB 3.0, 1x Audio Port
  • Dimensions: 15 x 9.05 x 15.23 inches

The MasterBox Q300L from Cooler Master is easily one of the more affordable mATX cases in the market. To start with, this case is compatible with mini-ITX and mATX motherboards whilst offering at least 28mm of routing space for efficient cable management. However, coming to the most impressive features associated with the MasterBox Q300L, you can very well reap the benefits of the multiple I/O orientation system, which in turn allows you to fit in components, regardless of preferences.

From a structural perspective, the MasterBox Q300L is easily one of the most durable mATX cases on the list, bolstered by steel and plastic accents. Adding to the design is the acrylic paneling and the transparent side-panel window that offers an excellent viewing experience. The smaller form factor entails to PS2 PSU power supply, provided you are fine with the bottom-mounted support.

As far as cooling support is concerned, you can accommodate 6 fans in addition to three radiators for achieving efficient liquid-based thermal performances. Besides, the three-sided dust filters further add to the cooling performance of the gadget. The magnetic filters also ensure that the ATX case remains clean for a longer period of time.

The modular mATX case supports six different orientations and allows you to position the case either in the horizontal or the vertical position. Other efficient and reliable attributes include the availability of three storage bays, including 2 2.5” modules and one internal bay for accommodating the 3.5” hard drive. Besides, MasterBox Q300L also comes equipped with 4 expansion slots, best suited for pairing wireless cards, sound cards, and other resources.

You get access to two USB 3.0 ports, which are basic data transferring slots. However, for the given price we can hardly expert Type-C slots. As far as the acoustic output is concerned, there is a separate, hybrid HD audio port to work with. Overall, the MasterBox Q300L from Cooler Master is the most sought-after mATX case, provided you aren’t willing to spend a fortune on the case and invest the money in purchasing relevant internal components.

Pros
  • Comes with perforated magnetic filters
  • Makes room for 6 I/O orientations
  • 4 expansion slots
  • Affordable
  • Transparent side panel
  • 28mm of routing space
Cons
  • Not enough storage bays
  • Filter screen isn’t sturdy enough
  • Build Material: Steel and Plastic
  • Power: 300W
  • Compatibility: Mini-ITX and Micro-ATX
  • Side-Panel Window: No
  • Expansion Slots: 4
  • Ports: 2x USB Type-A, 2x Audio Port
  • Dimensions: 18.6 x15.9 x 7  inches

The Antec Slim VSK2000 U3 should be one of your priorities if you are planning to set up a powerful yet affordable computing setup. As per our experts, this is one of the best mATX cases for 4K streaming setup, considering the accommodative aspects of the same. While we at Freedom 251 used this mATX case for setting up a Ryzen-powered gaming conglomerate, the excellent thermal performance ensured exceptional heat management, regardless of the higher processing TDP levels.

To start with, this ATX case is compatible with micro-ATX and mini-ITX motherboards. Furthermore, this mini tower structure also makes room for a TFX-based power supply module, which readily offers the rated power of 300 watts. Coming to the slotting clearance, the Antec Slim VSK2000 U3 is capable of including 200mm graphics cards and CPU coolers that are as tall as 65mm. Then again, there is already a 92-mm fan added into the mix by Antec, featuring extensive temperature control.

This slim PC case is loaded with storage-centric possibilities as it is one of the few options in the market to feature ODD, HDD, and SSD storage bays. Besides, setting up the device is easier as Antec Slim VSK2000 U3 is best known for the smallest learning curve. As far as the aesthetics go, this is one of the more modest structures in the retail area, courtesy of steel and plastic accents. However, the net weight of close to 7.7 pounds makes it one of the lightest on the list.

As far as peripheral support is concerned, this mATX case stacks in two USB 3.0 ports or the Type-A ports to be precise, followed by 4 expansion slots. Besides, you can also locate one audio input and one output slot for a seamless acoustic experience. Despite missing out on cable management space, side-panel windows, and display connections, the Antec Slim VSK2000 U3 is easily one of the best mATX cases in the market for getting the basic job done.

Pros
  • Multi-form compatibility
  • Three different storage bays 
  • Four expansion slots for paring additional wireless support
  • Two USB 2.0 ports
  • Lighter than usual
  • Comes integrated with a temperature-controlled fan
Cons
  • Lacks cable management support
  • Doesn’t include dust filters
  • Build Material: Steel and Glass
  • Power: 750W
  • Compatibility: Mini-ITX and Micro-ATX
  • Side-Panel Window: Yes
  • Expansion Slots: 4
  • Ports: 2x USB Type-A, 1x USB Type-C, 2x Audio Ports
  • Dimensions: 14×3 x 7.4 x 14.9  inches

If you are an aesthetic monger, the InWin 301 is the perfect mATX case to invest in. To start with, our experts were specifically pleased with the structural brilliance exhibited by this case, featuring a glass-based side panel, stunning front panel, and the LED display. What stands out is the ventilated steel enhancement that sits atop the tempered glass side windows.

When it comes to the structural footprint, the InWin 301 flaunts an alloyed chassis, which is virtually scratch-resistant. However, the sturdy yet shock-proof case also features a rear-aligned dust filter for amplifying the thermal performance. The existing cable management or rather routing setup stands out and allows you to stack several components, without having to worry about the tangles. This is one of the few mATX cases in the market to accommodate an additional graphics card holder.

As far as compatibility is concerned, this case supports micro-ATX and mini-ITX motherboards. When it comes to component clearance, the InWin 301 allows you to pair a 160mm long heat sink and a 330mm graphics card, sans compromising on the sanctity of the storage bays. As far as the power supply is concerned, the InWin 301 is capable of housing a PS2 12V module, for firing up the components, as and when desired.

Storage-centric possibilities are addressed by one HDD drive bay and two SSD, internal storage bays. However, it is the thermal performance that deserves a special mention. While the rear-centric dust filters add to the thermal efficiency of the same, you can pair in an excellent air-cooled conglomerate, led by 2 120mm front fans, 2 bottom fans featuring PCIe compatibility, and a solitary rear unit. InWin 301 also supports liquid cooling, courtesy of radiator support, one each for the front and rear end.

This mATX case also makes room for 4 PCIe expansion slots for accommodating sound cards, wireless cards, or even the cooling fans. Besides, the port arrangement on offer is pretty advanced with InWin 301 making room for a USB Type-C port, in addition to two USB 3.0 and audio slots. As far as case weight is concerned, the 14.3-pound mATX unit isn’t easy to move around but doesn’t let go of the sturdiness.

Overall, the InWin 301 is a reasonably priced mini-tower that allows you to stack in almost every relevant computing element, sans accommodative or heating issues.

Pros
  • Detachable routing space
  • An additional holder for a graphics card
  • Shock-proof chassis
  • Tempered glass panel
  • LED controlled panel display
Cons
  • Heavy
  • Limited HDD accommodation
  • Build Material: Steel and Plastic
  • Power: 750W
  • Compatibility: Mini-ITX and Micro-ATX
  • Side-Panel Window: Yes
  • Expansion Slots: 4
  • Ports: 2x USB 2.0, 1x USB 3.0, 1x Audio Port
  • Dimensions: 15.66 x 8.11 x 17.27 inches

The Thermaltake Versa H18 is easily one of the best mATX cases for entry-level gamers and enthusiastic PC builders. Despite this being a sturdy case, there is no shortage of efficient ventilation, courtesy of the mesh-based front panel. Then again, Thermaltake adds a hint of innovation by pairing in a dainty strip, featuring Blue LEDs.

While the component clearance is class-leading with Thermaltake Versa H18 capable of accommodating sizable graphics cards and power setups, it is the internal storage support that hogs a majority of the limelight. This mATX case features two HDD and two SSD units followed by four PCIe expansion slots for bespoke upgradeability. As far as the cooling setup is concerned, you can pair a maximum of 5 fans for efficient air cooling followed by two radiators for optional liquid cooling.

However, the Thermaltake Versa H18 already comes preinstalled with one 120mm fan at the front, which sweetens the pot further for the budget enthusiasts. When it comes to the port arrangement, this is one of the few mATX cases to include USB 3.0 and USB 2.0 slots, followed by HD audio compatibility.

In addition to that, Thermaltake Versa H18 also makes room for exceptional ventilation, partly assisted by the top-notch cable management. Besides, it is the tempered glass side window that makes an appearance, courtesy of the 4mm thickness and enviable clarity. Overall, for the given price, the Thermaltake Versa H18 is easily one of the best mini-tower cases to purchase, boasting of mATX and mini-ITX motherboard compatibility.

Pros
  • Excellent ventilation
  • A decent storage configuration
  • Durable chassis
  • Basement shrouding for better cable management
  • Hardened  side window
Cons
  • Sensitive power button
  • Still accumulates dust after prolonged usage
  • Build Material: Steel and Plastic
  • Power:550W
  • Compatibility: Mini-ITX and Micro-ATX
  • Side-Panel Window: Yes
  • Expansion Slots:7
  • Ports: 2 USB 3.0, 1x Audio Port
  • Dimensions: 21.67 x 21.26 x 11.02 inches

The Cooler Master MasterBox NR600 is one of the most efficient ATX cases in the retail space, boasting a mesh layout, minimalistic structural components, and a hardened and clear Tempered glass side window. While the price point is pretty competitive, this towering ATX case is capable of accommodating a pretty diverse and extensive set of internal components.

Starting with the clearance, the Cooler Master MasterBox NR600 makes room for a 410mm long GPU and a 160mm CPU cooler. Besides, Cooler Master supports the inclusion of a standard PS2 power module. Coming to the fans, you already get a 120mm front air cooling module followed by a rear-aligned module. In addition to the pre-installed fans, the Cooler Master MasterBox NR600 is also capable of accommodating 3 more units at the front and two top-aligned fans.

Then again, this is one of the few mATX cases where storage-centric support determines the cooling performance. For instance, the standard Cooler Master MasterBox NR600 model makes way for 5 SSD and 4 HDD storage bays followed by one dedicated ODD slot. However, if you choose to get rid of the ODD bay, Cooler Master allows you to pair water-cooled radiators at the front, top, and rear, with maximum support for 3 units.

That said, our experts were particularly impressed with the 7 card slots, which make it easier for you to stack in sound cards, wireless units, and other relevant resources for ideating a near-perfect PC. Besides, the connectivity suite is pretty standard with Cooler Master making room for two USB 3.0 ports followed by a hybrid audio slot with extended capabilities.

Lastly, this is quite a sizable ATX case at 14.48 pounds. Regardless, you still get support for the mini-ITX motherboard along with the micro-ATX module. As far as additional features are concerned, it is the cable management that steals the show, courtesy of the massive structural footprint of the Cooler Master MasterBox NR600, which also qualifies it as one of the most accommodative ATX cases in the market, considering the price tag.

Pros
  • Excellent thermal performance
  • Brilliant customizability setup
  • Competitive pricing
  • Stylish layout
  • Deafening acoustics
Cons
  • Lacks Type-C port
  • Comes installed with only one front fan
  • Build Material: Steel and Glass
  • Power: 750W
  • Compatibility: Mini-ITX, Micro-ATX, and ATX
  • Side-Panel Window: Yes
  • Expansion Slots: 7
  • Ports: 1x USB Type-C , 1 x USB Type-A, 1 x audio port
  • Dimensions:16.85 x 8.27 x 18.11 inches

The NZXT H510 scales beyond any competition courtesy of the steel-based chassis, minimalistic layout, and a modern design with the tempered glass side-panel to work with. However, the tempered glass side-panel window is easy to install and offers a complete view of the internal components. This mid-tower ATX case is compatible with almost every PC motherboard there is and also makes room for several internal structural enhancements, including the flush glass, radiator mounting bracket, and more.

Some of the other structural attributes that make sense include the cable routing setup for efficient space management, pre-existing channels, and a modular chassis. However, it is the fan setup that steals the show with NZXT H510 making room for 3 units at the front, 3 at the top, and one air cooling unit at the rear. Then again, the mATX case comes pre-installed with one AER 120mm fan, each for the top and rear cavities.

That said, despite being a mid-range case, the NZXT H510 comes with a radiator or rather liquid cooling support, courtesy of the two units at the top and one at the rear end of the case. When it comes to the clearance, you can accommodate a 380mm GPU without the radiator and a 325mm unit with the water cooler installed.

As far as storage support is concerned, you can pair in three SSD and three HDD units, as per convenience. Besides, streamers, workstation enthusiasts, and professionals can benefit from the 7 expansion slots in play. Data transfer speeds and acoustic performances are top-notch courtesy of the Type-C, Type-A, and a hybrid audio slot. 

This case weighs close to 14 pounds and brings forth air intake filters, functional drive trays, and other resources into the mix. Overall, the NZXT H510 is one of the better ATX cases to purchase if you aren’t sure about the type of motherboard to include and planning to keep your options open.

Pros
  • Exceptional thermal performance
  • Type-C port
  • Excellent cable management
  • Streamlined cooling layout
  • Value for money
Cons
  • Not enough space for intake fans
  • Accumulates dust
  • Build Material: Steel and Plastic
  • Power: 750W
  • Compatibility: Mini-ITX, and Micro-ATX
  • Side-Panel Window: Yes
  • Expansion Slots: 4
  • Ports: 1x USB 3.0 , 2 x USB 2.0, 1 x audio port
  • Dimensions:14.5 x 8.2 x16.5 inches

This 10.8 pound, sturdy little darkFlash DLM21 mATX case is affordable, spacious, and flaunts an easy-to-assemble layout. However, our experts were specifically pleased with the poly-mesh design, flaunting a magnetic and easy to dissemble layout. The front panel aids in cooling and offers excellent ventilation support. That said, it is the 4mm side-panel window that stands out, courtesy of the crisp visual support, hardened structure, and support for LED-backed effects, provided you choose to include the same.

When it comes to storage, the darkFlash DLM21 comes equipped with a solitary SSD bay followed by two 3.5” HDD modules. The internal storage units are perfectly supplemented by the 4 PCIe expansion slots, which allow you to pair in wireless and sound cards, if and when deemed necessary. As it is an mATX mid-tower case, the component clearance deserves a special mention. The darkFlash DLM21 allows you to pair in a 330mm GPU and a 165mm cooler fan provided you adhere to the basic inclusions.

As far as the cooling setup is concerned, darkFlash DLM21 is compatible with both air and liquid cooling essentials. While you can assemble three fans at the front, two at the top, and one at the rear, the radiator support is restricted to two units, considering the space constraints. However, the cooling performance is still top-notch and you wouldn’t end up needing liquid-cooling support unless you are dealing with an AMD-powered setup or the latest RTX 30-series GPUs.

Then again, the company doesn’t offer any pre-installed fan, which is quite a deal-breaker for budget seekers. In terms of ports, you get two USB 2.0 slots followed by a solitary Type-A and HD audio output. Overall, this is a budget-centric mATX case that is best known for the thick, SPCC-backed chassis and a bottom-mounted, standard power supply unit.

Pros
  • Side-panel with magnetic design
  • Accommodates a 240mm cooling radiator at the front
  • Value for money
  • Three USB ports
  • Poly-mesh design
Cons
  • Not meant for larger fans
  • Lacks adequate SSD storage support

Frequently Asked Questions

What is the primary difference between micro-ATX and mini-ITX cases?

Apart from the dimensions, micro-ATX and mini-ITX vary in terms of PCIe slots. Mini-ITX motherboards only come with two RAM slots but micro-ATX MOBOs have the adequate number of slots for relevant expansions or accommodating a sizable chunk of RAM.

What are the best things about a standard mATX case?

Micro-ATX cases are extremely resourceful PC builders in case you are planning to assemble a decently-powered personal computer. Besides, mATX cases offer RAM-amplification support as you at least get 4 PCIe expansion slots.

Are micro-ATX cases good enough for the latest breed of RTX GPUs?

Almost every mATX case is good enough for the RTX 3060 and RTX 3070 GPUs, as they extend up to 242mm. However, for RTX 3080, you need larger mATX cases, with close to 300mm of GPU clearance. For RTX 3090, which extends up to 336mm, you would require a GPU clearance of almost 380mm, which is rare for mATX cases.

What is the difference between air-cooled and liquid-cooled mATX cases?

While air-cooled PCs make use of fans to push out the hot air while the system is in motion, liquid cooling is all about helping the system maintain an ambient and constantly lower temperature, regardless of usage. Liquid-cooled setups make lesser noise as compared to the air-cooled ones.

Why is it good to have more expansion slots on the mATX motherboards?

PCIe expansion slots are used to pair in video cards, sound cards, wireless cards, and expandable RAM modules for empowering a standard PC. While there are PCIe, AGP, and PCI expansion slots associated with the motherboard, it is advisable to purchase one with PCIe support for faster speeds.

The Buyer’s Guide to ATX Cases

1. What is ATX and what is it used for?

ATX Is short for “Advanced Technology eXtended”. It is a specification that outlines the configuration and dimensions of motherboards and improves standardization.

An ATX motherboard has several advantages over other types. For example, they include advanced control facilities including checking the CPU temperature and voltages. As a result, the PC automatically shuts down if overheating occurs. These motherboards also have a stacked I/O connector panel mounted. With these devices you can easily relocate memory, thus allowing for better ventilation and installation of the key components.

Power management is also easier with the BIOS program. The PC can be turned on by using a modem or network signal because the main power supply is controlled by the motherboard. Additionally, the PC cannot be turned off while it is booting. If the computer freezes as it is turning on, you can simply turn it off by holding the power button for 5 seconds.

It is also impossible to place the power supply connectors in improperly because the ATX 2.01 Motherboards have a single keyed Molex internal power supply.

2. What is a mATX case?

Micro ATX, Mini ATX, and standard ATX motherboards are generally different when it comes to their dimensions. Here are the sizes for each of them:

  • Standard ATX: 12.0″ x 9.6″
  • Micro-ATX: 9.6″ x 9.6″
  • Mini-ITX: 6.7″ x 6.7″

A micro ATX case, therefore, can fit in a micro ATX motherboard as well as a mini ITX motherboard, as the latter is shorter in both height and width than the former. However, these cases cannot fit in standard ATX motherboards because the latter is usually longer than the former.

3. How big is a micro ATX case?

A standard ATX motherboard measures 12 by 9.6 inches, and a micro ATX one measures 9.6 x 9.6 inches. A case that supports micro and mini ATX will generally be smaller than one that supports a standard motherboard.

It is also worth noting that a large case may support smaller boards, but it is not necessarily true. It is worth checking the specs of the case to know the exact dimensions and specifications to see if it supports the motherboard you want to install in it.

4. Is micro ATX worth it?

Micro ATX motherboards are the best choice. One should go for a standard ATX only if they require more than 4 PCIe slots. Mini ATX boards are good for those of you who want an extremely compact PC.

“Micro ATX boards measure 9.6 by 9.6 inches, and mini ITX ones measure 6.7 by 6.7 inches.”

Besides the size difference, micro ATX can support up to four RAM modules, but mini ones can only support to. For individuals who are committed to gaming, a larger motherboard may be required.

Other differences to be considered are the number of PCIe slots, which are only four in micro ATX. These slots are used by expansion cards like sound cards, internal modems, and graphics cards. Depending on the type of PC you are planning to build, the RAM you require, and PCIe slots needed, you should pick the motherboard that best fits your needs.

For gamers, we would advise sticking to micro ATX boards as they offer enough RAM and support enough PCIe slots to set up an ideal rig.

5. What is the ATX 12v for?

Over the last few years, ATX Technology has undergone several changes to deal with modern development in power. For the last few years the new format of ATX, called v2.0 or 12V is being used.

This model has a 24 pin main power connector over the previous 20 pin connector and it also does not require a 6 pin AUX power connector. Serial ATA power connectors are a must in this version, and it also shows minimum power wastage in conversion, and thus, higher efficiency.

The most notable change in the modern version of ATX is the addition of 4 pins which ensure additional power can be transferred through the rails. One of the major advantages of this version is a decrease in wastage of power. When current is pulled from the wall outlet there is the conversion of power from high to low, on the level at which the PC requires it. But even though less power is used, there is extreme wastage in the transfer in the form of heat.

This new version of ATX ensures that less power is pulled from the wall outlet. The minimum efficiency rating with these versions is 80%, but higher ratings can be found in the market.

Things to Consider When Buying

We understand that choosing the best-suited micro ATX case can be a difficult venture especially considering how the market is flooded with choices that can scare anyone.

With so many features and specifications available, it can be hard to decide what works best for you and which one will be able to enhance the performance of your system.

It is difficult to find the answers to these questions when you directly look at a list of products. So before you decide to you pick one product from the above-mentioned list, let’s talk about what features you should consider for finding the perfect case that will work for you.

Here are some of the factors you should keep in mind while looking for a micro ATX case that’s best suited for your system.

1. Design & Customization

One of the first things anybody thinks of is obviously the design. The micro ATX cases come with aesthetics that can make anyone want to grab the product right away. Who doesn’t want a rig that has a tempered glass side panel that looks edgy and cool? But do remember that it means you will have to put in extra work hiding away cables and ugly parts. Do not get fooled into buying a tempered glass case if you are lazy.

The RGB lighting is another attractive feature, especially for gamers. You can customize the lights to match your mood and it looks super pretty in the dark. However, some people may find it irritating, so pick the option that suits your personality.

The market is deluged with cases that offer endless customization. Whether it is changing the position of the I/O front panel or using the case itself in a horizontal or vertical position, you can be sure you find something that fits your needs.

2. Cooling Options

If you plan on using liquid coolers or installing custom liquid cooling rigs that come with certain CPUs and GPUs, it is necessary that you pick a case that has adequate openings to install and clean these systems easily. You should also keep in mind that some cases cannot accommodate liquid cooling systems of all sizes.

If you already have a cooling system, you should check if the case you are planning to buy can accommodate the size. Usually, every case has specifications that will indicate the radiator size that it can support so it should be easy to find one that meets your needs.

Having vents at the sides of the case itself can also help reduce overheating and increase the cooling efficiency of the system.

3. Noise

Optimum airflow is essential for running powerful hardware in a system and that can be achieved only by installing fans. However, sometimes installing 3 or more fans can increase the noise factor of the case.

Do not sacrifice airflow for noise reduction because overheating of PC components can cause thermal throttling of the hardware. You can choose to buy a case that comes with noise filters and liners that reduce excessive sound distribution.

4. Dust Filter

For those of you who work in a dusty environment, it can be essential to find a case that prevents the entry of dust into the system components. Cases generally tend to gather dust easily, and buildup of dust can definitely affect performance.

Before purchasing a case, make sure that it has effective dust filters which not only prevent the entry but can also be easily accessed. Make sure you can remove them and clean them regularly so that they do not get clogged up.

Some cases also come with magnetic dust panels which further prevent buildup inside the case. Positive airflow can also ensure that your system does not get affected easily.

5. Space for Components

Always make sure that the case has enough space to handle all the pieces of equipment you want to install in it. It is a good idea to make a list of all the products you want to install inside, and cross-check the list with the specifications of your desired product.

Depending on the number of drive bays you want, expansion slots, radiators, coolers, and even the type of motherboard you are going to use, the type of case you need to pick may vary vastly. While picking a case, also make sure that it supports not just the number drive bays you want, but also conforms to their sizes.

Motherboard trays inside these cases can also come in a variety of sizes and orientations. You can choose to install your motherboard horizontally and vertically, so make sure you remember to keep that in mind while buying the case.

Having enough space for all the components is not enough, you should also be able to access all these components even after installation. This is especially important when considering fan mounts. It should not only have enough space for installing fans of 80 to 120 mm size, but also enough clearance from other devices and accessibility to them after all the components have been placed inside.

Another important factor to consider is cable management. Some cases are not optimized for handling the cables of all the installed components without appearing messy and ugly. Make sure that the case you buy has enough space for cable management.

Dedicated sections for securing cables and a black plate that can be removed are good indications that the case has good cable management. This will make space look neat and easy to manage. It will also enhance the modification process even after installation.

PSU shrouds are an important factor that is often forgotten. They help in cases where you need to hide loose cables. The shrouds will keep them in a neat enclosure, which is important for cases that have tempered glass side panels.

Graphics cards are becoming shorter and shorter, but you should make sure that the case has enough space to fit in your desired card length. Case specifications will mention the maximum GPU allowance, and it is necessary to match it with the one you have.

You should also match the radiator and cooler size with the specs of the case. CPU coolers, especially, can be quite bulky. When deciding on the case and cooler, check the clearance they need. One thing to keep in mind is that you should match cooler height with the width of the case, as coolers are usually installed horizontally.

6. Durability

The material of the case is one of the most important factors to be considered. The durability of the material is what decides how long it is going to last.

It is essential that you pick a case that comes with the right combination of sturdy and fragile parts. Some components may require the case material to be sturdy enough to support their weight without crumbling under it, while others may require a soft landing pad to prevent accidental damage.

The case should be sturdy enough to not transfer shock or motion to the components. The durability of the case may vary from model to model. It is ideal to spend on a case made of metal or polymer instead of investing in a cheaply made product.

7. Budget

One of the most important factors when buying anything is the budget, obviously. It is essential that you remember what your upper limit is while picking the right product for you. Do not get mesmerized by unnecessary features and blow your budget. Marketing may mesmerize you into buying something that you do not require at all. Just stick with a case that works best for you and fits within your budget.

Having said that, it is also important to not cut back on the quality of the product while trying to save money. Case durability and how well it functions with the specifications of other components of your PC is important because otherwise, you might end up spending more money replacing a low quality or inferior case.

Ultimately the goal is to strike the right balance between finding a durable and flexible case that meets your requirements and also falls within your budget.

The Verdict

Each of the featured mATX cases caters to a specific breed of computing. However, before selecting one, you must realize that micro-ATX cases are the budget-variants for gaming considerations and mostly come with a single-GPU configuration. In case you want to configure a premium gaming notebook, we would suggest you opt for a standard ATX model.

However, if you want our curated suggestions, we have a case for each of your select preferences, including power, thermal performance, silent operations, upgradeability, premium gaming support, portability, and budget.

When it comes to performances, we can select the following versions:

  • Corsair Crystal 280X for  RGB fans and 32 LED array
  • Cooler Master MasterBox Q300 for the RGB-powered fans and acrylic panel

For silent operations, you can always opt for, Cooler Master Silencio S400 for the enviable consortium of radiators, courtesy of the liquid cooling support. In case you want to make the most of the gadget upgradeability, the best option has to be, Cooler Master MasterBox NR600, courtesy of the 7 expansion slots.

For premium gaming support, you need an mATX case with excellent GPU clearance, which is best realized by, NZXT H510 for the 380mm worth of clearance in the absence of the radiator. As far as portability is concerned, the only mATX case that qualifies is the Cooler Master MasterBox Q300P for the adjustable handles in the play.

Lastly, if you want the best set of attributes on a budget, nothing works better than the Antec Slim VSK2000 U3 for the sub-$45 price tag. Considering every other attribute, we would recommend you to opt for the Cooler Master Silencio S400, as it is one of the best sub-$100 mATX cases with 7 expansion slots, support for liquid cooling, silent operability, and even the elusive ODD storage bay.

Freedom 251 Staff

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