If you’re looking for a new computer case, the options can be overwhelming. Do you need a full tower or mid-tower? What about ATX or micro ATX? And what are all these various ports and connectors? If you’re not sure where to start, we’ve got you covered with this guide to the best smallest micro ATX cases.
These cases are perfect for people who want a smaller form factor without sacrificing features or performance. Plus, they’re affordable and easy to transport, making them perfect for gamers or home users on the go. So if you’re in the market for a new case, read on for our recommendations!
At a Glance:
5 Best smallest micro Atx cases
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Best Pick ![]() | Check Price | |
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Staff Pick ![]() | Check Price | |
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1. Thermaltake S100 Tempered Glass Snow
Best Pick
The Thermaltake S100 Tempered Glass Snow Edition Micro-ATX Mini-Tower Computer Case is a great choice for budget-conscious gamers and DIY enthusiasts. This case offers excellent airflow and cooling performance, thanks to its tempered glass panels and spacious interior.
It also includes a number of convenient features, such as an integrated fan controller and cable management system. The Thermaltake S100 is constructed from high-quality materials, including tempered glass panels on the front, top, and side of the case. The case also features a powder-coated steel chassis for durability.
It offers excellent airflow and cooling performance, thanks to its multiple ventilation openings and spacious interior. The front panel includes two 120mm intake fans, while the rear panel includes a single 120mm exhaust fan. The case also includes an integrated fan controller for convenient fan speed control.
The S100 also features a cable management system to help keep your system tidy and organized. The case includes multiple routing grommets and a generous amount of space behind the motherboard tray. The Thermaltake S100 Tempered Glass Snow Edition Micro-ATX Mini-Tower Computer Case is a great choice for budget-conscious gamers and DIY enthusiasts. This case offers excellent airflow and cooling performance, thanks to its tempered glass panels and spacious interior.
It also includes a number of convenient features, such as an integrated fan controller and cable management system. The Thermaltake S100 is constructed from high-quality materials, including tempered glass panels on the front, top, and side of the case. The case also features a powder-coated steel chassis for durability.
Pros
- Excellent build quality
- Good airflow
- Tempered glass side panel
- Cable management options
Cons
- Limited space for expansion
2. Cooler Master MasterBox NR400 Micro-ATX Tower

The Cooler Master MasterBox NR400 is a micro-ATX tower case with front mesh ventilation for excellent cooling performance. It features a tempered glass side panel to show off your build and has two pre-installed 120mm fans for great airflow. The NR400 is a great choice for building a powerful yet compact gaming PC.
The Cooler Master MasterBox NR400 is a great micro-ATX tower case for building a powerful gaming PC. It has excellent cooling performance thanks to the front mesh ventilation and two pre-installed 120mm fans and can accommodate a powerful graphics card up to 12.1″ long.
The tempered glass side panel lets you show off your build, and the I/O ports include USB 3.0 and 2.0 for high-speed data transfer. The Cooler Master MasterBox NR400 is a great micro-ATX tower case for building a powerful gaming PC. It has excellent cooling performance thanks to the front mesh ventilation and two pre-installed 120mm fans and can accommodate a powerful graphics card up to 12.1″ long.
The tempered glass side panel lets you show off your build, and the I/O ports include USB 3.0 and 2.0 for high-speed data transfer. The NR400 is a great choice for building a powerful yet compact gaming PC. It supports micro-ATX and mini-ITX motherboards. The case has a side window panel to show off your components.
The Cooler Master MasterBox NR400 offers great front mesh ventilation and a clean look. It’s a great choice for those who want good airflow and a clean look for their build. The case has a side window panel to show off your components.
Pros
- Great Performance
- Front mesh ventilation for increased airflow
- dust filters included for easy cleaning
- Compact size for easy placement
Cons
- Not as much space for expansion as a full-sized tower
3. CORSAIR CRYSTAL 280X
Staff Pick
The CORSAIR CRYSTAL 280X RGB is a micro-ATX sized case that comes with three 120mm RGB fans and one tempered glass panel. The CORSAIR CRYSTAL 280X RGB is made primarily of steel and tempered glass. The steel is thick and the case feels very solid. The tempered glass panel is thicker than most other cases on the market and it gives the case a very premium feel.
The design of the CORSAIR CRYSTAL 280X RGB is very clean and sleek. The front of the case is made up of a single piece of tempered glass which gives the case a very modern look. The back of the case has a honeycomb design which helps with airflow.
The internals of the CORSAIR CRYSTAL 280X RGB is very spacious. The case can accommodate up to a 240mm radiator in the front and a 120mm radiator in the rear. The cable management is excellent and there is plenty of room for all your components.
The CORSAIR CRYSTAL 280X RGB has great cooling potential. The three 120mm RGB fans provide good airflow and the case can accommodate up to a 240mm radiator in the front and a 120mm radiator in the rear.
The CORSAIR CRYSTAL 280X RGB is a great micro-ATX case. It has a clean and sleek design, excellent build quality, great cooling potential, and plenty of room for all your components. It is a great choice for anyone looking for a high-quality micro-ATX case.
Pros
- Perfect size for a micro-ATX build
- It good looking case
- Plenty of room for cable management
- Comes with two RGB fans
Cons
- The case is a bit flimsy
4. Antec Dapper Dark Phantom DP301M Black
Budget Pick
The Antec Dapper Dark Phantom DP301M is a black steel and tempered glass micro-ATX gaming case with ARGB lighting. The case has a clean and modern design with a tempered glass side panel that shows off your components.
The case is also compact, making it easy to transport to LAN parties or other events. The DP301M also has good airflow and includes a 120mm ARGB fan for cooling. Overall, the Antec Dapper Dark Phantom DP301M is a great option for a micro-ATX gaming build.
The Antec Dapper Dark Phantom DP301M is one of the best micro-ATX gaming cases for a number of reasons. Firstly, it features a beautiful all-black design with ARGB lighting that gives it a premium look and feel.
It includes a tempered glass side panel which allows you to show off your internal components in style. Finally, it is very compact and easy to transport, making it ideal for LAN parties or other events.
The Antec Dapper Dark Phantom DP301M is a great choice for anyone looking for a compact and stylish micro-ATX gaming case. It features a tempered glass side panel, which allows you to show off your components, and an ARGB lighting system that adds a touch of style to your build. The case also includes two USB 3.0 ports, making it easy to connect your peripherals.
Pros
- Clean and modern design
- The tempered glass side panel shows off components
- Compact and easy to transport
- Good airflow
- Includes a 120mm ARGB fan
Cons
- None!
5. Fractal Design Core 1100

The Fractal Design Core 1100 is a mini tower computer case that offers superb cooling and expandability in a compact yet stylish package. It features two front-mounted 120mm fans for excellent airflow and can accommodate up to six 3.5″ drives and four 2.5″ drives for plenty of storage capacity.
The Core 1100 also has plenty of room for expansion cards and comes with a full-length dust filter to keep your components clean. This case is ideal for building a powerful yet compact gaming PC or HTPC. It supports ATX, microATX, and mini-ITX motherboards, and has enough space for high-end graphics cards and CPU coolers.
The Core 1100 also includes a three-speed fan controller, so you can fine-tune the airflow to your needs. If you’re looking for a small yet high-quality case, the Fractal Design Core 1100 is an excellent choice.
The Fractal Design Core 1100 is one of the best mini tower computer cases on the market for a number of reasons. Firstly, its small form factor means that it takes up very little space on your desk or in your home office.
Its sleek and minimalist design means that it looks great next to any other equipment you might have. Furthermore, Its excellent build quality means that it will last you for years to come. Finally, its affordable price tag makes it a great value for money option.
Pros
- Sleek and minimalistic design
- Excellent build quality
- value for the price
- Good airflow
Cons
- Not much room for expansion
Frequently Asked Questions
What is the best micro ATX case?
The best micro ATX case is the one that fits your needs the most. There are many great micro ATX cases on the market, so it really depends on what you’re looking for.
What is the smallest micro ATX case?
The smallest micro ATX case is the In Win B1 Mini-ITX Tower. It’s only 11.8″ x 10.2″ x 3.2″, making it very easy to transport and perfect for small spaces.
What is the best micro ATX motherboard?
The best micro ATX motherboard is the ASUS ROG Strix B450-I Gaming. It has great features and is perfect for gaming.
What is the best mini ITX motherboard?
The best mini ITX motherboard is the ASUS ROG Strix B450-I Gaming. It has great features and is perfect for gaming.
Final Words
So, there you have it. Our top five picks for the best smallest micro Atx cases on the market today. We would love to hear your thoughts and opinions on this topic. Let us know in the comment section below which of these cases is your favorite and why. Additionally, if you have any other recommendations for small form factor cases, we would love to hear about them as well!