Top 5 Smallest micro ATX Case – Do more in less!

There are generally three types of cases used by most, and they include the micro ATX cases, the standard ATX case, and the mini ITX case, out of which the first one is mostly used. If you just want to cut to the chase then our best recommendation for the smallest micro ATX case is Antec Slim VSK2000-U3. Click on the link to check it out!

Micro ATX cases measure about 9.6 x 9.6 inches overall. There are a few key reasons why many people prefer micro-ATX cases over other cases:

  • The small form factor of micro-ATX cases allows it to be placed at any convenient place.
  • They are available in different price ranges to suit the needs of the buyer.

Micro-ATX cases are the best option for gamers as they allow for easy access to the system components and provide more space for other components for future upgrades. Micro ATX cases come with tons of features depending upon the price range.

Some come with multiple drive trays and cable management systems for installing more than one storage device on the computer build and managing wires and cables of the various components inside the case. ATX cases can also be used as LAN boxes and also come with fancy features such as RGB lighting to give your setup a charming and attractive look.

The Best and the Smallest Micro ATX case

Smallest Overall Best mATX case – Antec Minuet 350

Whether you plan to use your computer in a professional environment such as an office or even your living room, the Antec Minuet 350 is perhaps the best option that you can go with.

In terms of the design, the case is quite simplistic and exhibits a sleek and simple design without any over the top aesthetics. The build is entirely out of metal and the case is quite sturdy, to be honest. The case, when kept flat measures 100 x 325 x 430 mm and also comes with a stand that can be used to prop the case to save space.

One of the best features of the Antec Minuet 350 is that it comes with a built-in 350 Watt power supply unit which should be plenty to power a typical computer system at home or an office. The micro ATX case comes with 2 drive bays, one measuring 3.25 inch and the other 5.25 inch and also has 2 USB ports and a single eSATA port. You also have the 3.5 mm headphone and speaker jacks for audio connections.


There is a fan mount for installing an 80 mm fan that will keep your system cool with good airflow. There is a switch with three control settings to control the speed of the fan. The case can easily fit a micro-ATX size motherboard and the installation is quite easy as the inside of the side panel has raised domes with screw holes to fix your motherboard without any hassle. Overall speaking, the Antec Minuet 350 is the smallest mATX case out there with such a low price tag.

Key Features:

  • 80 mm fan mount with 3-speed control settings to provide enhanced airflow and allow cooling.
  • Multiple drive bays to install more than one Hard disk drive.
  • A small form factor with a sleek design allows the case to fit into any type of environment.
  • Built-in 350 watt power supply to run your system and other components.

Most silent and smallest mATX case – Cooler Master Silencio S400

CoolerMaster always prioritizes quality and cooling over all the other factors. The Silencio S400 is probably the quietest and one of the smallest mATX cases out there right now. The size of the S400 can be specified as a Mini tower and has dimensions of 418 mm x 210 mm x 408 mm. The construction is entirely out of steel which gives it rigidity and aids the durability factor. Overall speaking, the build quality is fine.

The Silencio S400 only comes in one color and sports a sleek all-black color scheme that fits in any environment. With a weight of just about 7 KG, the case is very portable in case you need to place it somewhere else. We can always expect great cooling capabilities when it comes to CoolerMaster, and the S400 comes with two fan mounts in the top panel, one for a 120mm one and the other for a 140mm fan. The front panel has combo audio and headphone jack for your sound input and output and the case is provided with 2 USB 3.0 ports.


The front panel of the micro ATX case features a reversible swing door made of thick steel provided with sound absorbent material inside which keeps the system running at minimum noise levels with its superior sound damping capabilities. Just behind the hinged door, you can find a 5.25-inch drive bay for your storage drive or optical drive.

Other than that there are four 3.25-inch and 2.5-inch drive bays respectively. For your cable management, you have 2 large holes with rubber grommets to pass your fan wires and other 2 medium-sized holes near the PSU tunnel. The case also has tool-less mouths for installing your solid-state drives.

Key Features:

  • Great quality sound dampening capabilities that keep your system running at low noise levels.
  • You have two different side panel variants- A tempered glass option and a steel panel.
  • Multiple drive bays to install your storage solutions and optical drives.
  • Supports multiple radiators.

Under Budget mATX case – Cooler Master MasterBox Q300L

CoolerMaster not only manufactures top quality products but also provides their buyers with options from their budget-friendly lineup of products and the Cooler Master MasterBox Q300L is one such model. The Q300L sports one of the most aesthetic looks out of all the other mATX cases that fall under this price range and is a great choice for gamers who want a bit of an eye-appealing gaming setup.

The case is pretty low-profile with dimensions of 9.1 in x 15.2 in x 14.9 in. The case comes with a tempered glass side panel allowing you to show off your powerful components inside your PC. One of the notable features of the Q300L is its I/O panel which is removable and can be fixed in 6 different places on the case.

This gives you the freedom of placing your system any way you like without having the trouble of reaching the I/O panel. The I/O panel houses a pair of USB 3.0 ports, the headphone and microphone audio jack, and a reset button. The front panel has a full-size magnetic dust filter to keep your system free from foreign particles. The metal side panel has screws with rubber padding which allow you to safely place your case horizontally.


You have four expansion slots and a mini-ITX or a micro-ATX size motherboard will fit just right into the case. For the installation of your storage solutions, you have a single 3.5-inch drive bay and two 2.5-inch drive bays. The back of the motherboard treaty has a ton of routing space for your cable management.

The Q300L has a large number of fan mounts for ultimate cooling. In the front panel, you have 2 mounts for 120 mm or 140 mm fans and the rest of the panels have a total of 5 fan mounts for 120 mm fans. The Q300L is arguably the best PC case on our list.

Key Features:

  • Great quality removable magnetic dust filter to keep your system dust-free.
  • A large number of fan mounting options for superior cooling.
  • Removable I/O panel allows easy access to the connectivity options irrespective of the environment.
  • Acrylic transparent glass side panel allows you to peek into the inside of the PC.

Smallest Value for Money mATX case – Antec Slim VSK2000-U3

The Antec Slim VSK2000-U3 is probably the most bang for its buck. In terms of general looks and design, it looks just like a rectangular slim box with an all-black color scheme. The surface design is sleek and glossy and will fit anywhere such as under a desk or on top of a shelf.


The mATX case measures 356 mm x 338 mm x 102 mm and is pretty nifty for its price. The bottom part of the case is provided with rubber feet so that you can easily place it horizontally on a desk or a table in a fixed place. Unfortunately, there are limited cooling options as there are no fan mounts and you only have a pre-installed 92 mm fan situated in the front panel which is temperature-controlled.

The front is plain and for you I/O solutions you have a pair of USB 3.0 port and the typical microphone and headphone audio jacks. You also have room for installing an optical drive. You have a 5.25-inch drive bay that supports tool-less installation and other than that you have a 2.5-inch drive bay and a 3.5-inch drive bay.

A mini ITX or a micro ATX size motherboard will fit right into the large space inside the case and you are provided with a total of four expansion slots. In the front panel of the VSK2000-U3, you have 2 tiny LEDs that indicate the power and the activity of the drives.

To make cable management easier, you are also provided with a number of cable holders. The 92 mm fan is temperature-controlled as we spoke earlier and it uses a temperature sensor that is supplied directly from a Molex connector and therefore you will not be able to control it with the motherboard. Overall, this is one of the most budget-friendly micro ATX cases.

Key Features:

  • Multiple drive trays give you the ability to install more storage solutions into your system.
  • A large number of cable holders offer better cable management.
  • A 92mm temperature-controlled fan keeps your system cool and running.

Best looking mATX case – CORSAIR Carbide AIR 240 Micro-ATX case

The Carbide Air 240 from Corsair is a top-notch piece of technology in all respects. The Air 240 sports a complete cube-shaped design to allow maximum storage space inside the case while taking up the least amount of your outside space. The dimensions of the Air 240 are 315 mm × 265 mm × 400 mm The Air 240 is available in two color options, the all back design and the completely white one.

The outer chassis houses a number of cooling vents to offer great airflow and keep the inside of the system cool. The side panel is made of acrylic glass and lets you take a peek into the interior of your system. There are three 2.5-inch drive trays available in the top cage and three 2.5-inch or 3.5-inch trays in the rear cage. The black variant of the Carbide Air 240 has some parts that have a metallic finish while the plastic parts have a smooth glossy finish.


The case is made of mainly metal and plastic and stands up pretty well in terms of durability and sturdiness. The white variant on the other hand has a uniform satin white color. Despite the exterior color options, the interior of both the variants is black. The interior of the Carbide Air 240 is separated into two parts and exhibits a dual-chamber configuration which looks quite good aesthetically speaking.

The main half of the system sits at the back of the case while the PSU sits in the front. The micro ATX case performs pretty well at keeping the system cooling owing to the presence of a large number of vents all over the body. The Carbide Air 240 is big enough to support a mini ITX and also a micro ATX.

The cooling is also aided by the availability of two 120 mm fan mounts and two 80 mm fan mounts. On the right side of the faceplate, you have the input and output ports that include 2 USB 3.0 ports, a headphone jack, a microphone jack, and the power button.

Key features:

  • Dual-chamber configuration helps you keep an organized interior.
  • Multiple chassis vents and fan mounting options help keep the system cool.
  • A total of six drive trays allows you to install multiple storage solutions.


Computer cases nowadays are available in many different form factors and a micro ATX is considered as the best PC case. There are a few deciding factors when it comes to which ATX case is the best for you whether it be a budget-friendly one or a case with great aesthetics and we have just stated and reviewed each one pertaining to your needs in our above article.

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