Welcome to our guide on the best smallest ATX cases! If you’re building a PC, one of the most important decisions you’ll need to make is choosing a case that suits your needs. The size of the case is particularly important if you want to build a compact system that doesn’t take up too much space on your desk or in your entertainment center. Fortunately, there are plenty of great ATX cases on the market that is small enough to fit in tight spaces, while still offering plenty of room for your components and cooling solutions. In this guide, we’ll take a look at some of the best smallest ATX cases currently available, and help you find the perfect one for your needs.

Cooler Master MasterBox Q500L


Introducing the Master Box Q500L, a versatile PC case that supports standard ATX motherboards and plus. Despite its small dimensions, measuring only 386 x 381 millimeters in body depth and height, it packs a powerful punch with its fully perforated chassis design.

The top, front, rear, and bottom panels are all fully perforated, allowing for excellent airflow and accommodating various fan configurations to keep your system cool and running smoothly. Additionally, the chassis is incredibly versatile, with the option to move the I/O panel to six different locations depending on your preference.

Not only that but the Master Box Q500L can be oriented both vertically and horizontally while still retaining easy access to the I/O panel. Rubberized screws also function as feet to supplement different orientations and keep your system stable and secure.

One unique feature of this case is its vertical PSU placement. Positioning the power supply unit at the front of the chassis fully utilizes internal space and allows for more efficient cable management. Plus, the bracket can be relocated to offer position options depending on your preference and form factor.

In summary, the Master Box Q500L is an excellent choice for anyone looking for a compact, versatile, and efficient PC case that can accommodate standard ATX motherboards and provide excellent airflow for optimal performance.

Phanteks Eclipse P300A


This case is the perfect combination of form and function – the Ultra-fine Performance Mesh front panel with Tempered glass side panel PC case. This high-performance unit is designed to offer optimal cooling performance and showcase your build with its beautiful tempered glass side panel.

One of the standout features of this case is its spacious open interior that supports ATX motherboards and a 280mm radiator in the front. It also supports a vertical GPU bracket (optional PH-VGPUKT_0), which makes it perfect for gamers looking to showcase their high-end graphics card.

The full-size power supply support ensures that you can use the power supply of your choice without worrying about compatibility issues. Additionally, the easy accessibility to I/O makes it convenient to connect all your peripherals. The case features 2x USB 3.0, a microphone, headphones, a power button, and a reset button.

Installation is a breeze thanks to the front-loading HDD trays, which allow for easy installation of hard drives. The case also offers up to 4x SSD mounting locations, ensuring that you have plenty of options when it comes to storage. And for those who want to keep their power supply out of sight, there’s a separate PSU compartment.

Overall, this is an excellent choice for anyone looking for a high-performance case that is both functional and aesthetically pleasing. With its spacious interior, easy accessibility, and sleek design, it’s sure to meet all your needs.

Corsair Carbide Series 175R RGB


One of the key features of the Corsair Carbide Series 275R case is its versatility. It supports both ATX and Micro-ATX motherboards and can accommodate up to a 360mm radiator in the front for powerful liquid cooling performance. The case also features a full-length PSU cover, which helps to keep cables and clutter out of sight.

The tempered glass side panel provides a clear view of your build, allowing you to show off your components and cable management skills. The case also includes a full set of ventilated front, top, and rear panels, which allow for excellent airflow and cooling performance.

The Corsair Carbide Series 275R case is designed for easy installation and maintenance. It features tool-free drive installation and side panel removal, which makes it easy to upgrade or clean your system. The case also includes multiple cable routing channels and tie-downs, which help to keep your cables organized and out of sight.

In terms of connectivity, the Corsair Carbide Series 275R case includes two USB 3.0 ports, a headphone jack, and a microphone jack on the front panel. The power button is also conveniently located on the top panel of the case.

Overall, the Corsair Carbide Series 275R case is an excellent choice for gamers and enthusiasts looking for a mid-tower case that offers style, versatility, and performance. With its tempered glass side panel, excellent airflow, and tool-free installation, it’s sure to meet all your needs.



One of the standout features of this case is the 3-piece panoramic tempered glass design, which provides an unobstructed view of your build from any angle. With no corner pillars, you can easily turn the case to display your components from the left or right side of your desk.

Another unique feature of the Y60 is the exclusively vertical GPU mount, which ensures that your graphics card is showcased in the best possible way. Additionally, the included PCIE 4.0 riser cable and protective shroud make it easy to install half-height PCIE cards behind the vertical graphics card.

The Y60 also boasts an antechamber construction, which separates cables from thermal components and creates a stunning visual display. Cold floor cooling is another feature of this case, with sweeping lateral vents strategically placed in the basement to eliminate hot spots and ensure optimal airflow.

Finally, the case comes with three pre-installed Flow FE12 fans featuring fluid-dynamic bearings for quiet operation. Overall, the Y60 is a truly unique PC case that combines functionality with aesthetics to create a one-of-a-kind computer-building experience.

Fractal Meshify 2 Compact Black LTG


This product features a sleek and modern design with an iconic angular mesh front that provides filtered airflow while looking bold and stealthy. It has enough space to fit GPUs up to 360 mm and a 240 mm radiator on the top, or up to 360/280 mm front radiators with GPUs under 305 mm. Additionally, it can accommodate up to 7x 120 mm or 4x 140 mm fans, with 1x 120 mm and 2x 140 mm Dynamic X2 fans included.

Despite its impressive capacity and performance, the versatile and space-efficient ATX form-factor design ensures that it remains compact and easy to fit into any setup. The open interior layout is optimized for smooth airflow, ensuring that air can flow smoothly from the front intake to the rear exhaust. Overall, this product provides a balance of functionality and style, making it a great choice for anyone looking to build a high-performance PC with a modern look.


We hope this article has given you a good idea of what to look for in the best smallest ATX cases. By now, you should be able to make an informed decision when shopping for a small form factor case that will fit all your components and provide great cooling capabilities. Keep in mind the size, materials used, compatibility with components, and installation options before making your purchase so that you can pick the perfect case for your gaming rig!