The 5 Different PC Case Sizes Explained – Which PC Case Should You Go For?

Types of PC cases

Let’s be honest.

Choosing a PC case is almost as perplexing as a Hollywood garage sale.

With various sizes, materials, and features, how can you know which one is right for you?

Despite that, buying a suitable PC case makes a huge difference in your digital experience. The fact stands, whether you use your computer for heavy gaming or just the occasional emails.

In the world of combined cooling, noise suppressor, and other fancy features, you get lost between what sounds good on paper and what you need from the PC.

Especially with the significant advancement over the last couple of years, you’ll find a large variety in the design and construction of PC cases.

If you’re looking to get a new PC or even if you want to build one, it is vital to know the types of PC cases. Each one of these types has different sizes, features, and supported components.

Looks are certainly important. Of course, you want your PC to look good. But the priority is for the case to work for what you need.

In most cases, the first step is to find a case of the correct size. There are specific things you need to look at when you’re making this choice:

  • What are you going to use the PC for?
  • Where will you place the PC?
  • Are you going to carry the PC often?
  • Do you need a PC that seems lowkey or one that takes up lots of space?

Saying “wow, that looks cool” doesn’t exactly work when it comes to PC cases. You need to know what goes into each type of case and what people they’re best suited for. If you don’t want tons of RGB or other top-end components, the case will only be taking up more space.

What Are The Different Types Of PC Cases Based on Size?

The most popular type of system case is the tower. We can further divide these cases into full-size, mid-size, and mini-size towers depending on their height and the number of internal drive bays they can accommodate. Here is a detailed look at the types of PC cases.

Full-tower PC Case

Full-tower PC case

The full-tower PC cases are enormous and fit big-sized motherboards. The Full-tower supports motherboards like standard ATX, E-ATX, Micro ATX, XL-ATX, Mini ITX, and SSI EEB.

These cases aren’t suitable for everyone since they take up a lot of space, but they offer many features and excessive room for plenty of setups. This includes extensive cooling support, a massive storage room, more than three graphics cards, plenty of fans, as well as 4-10 5.25-inch internal drive bays. In short, there’s a lot of space.

The full-tower PC case also allows you to install up to seven expansion cards.

Full-tower PC Cases are a lot easier to build since they allow plenty of space to mount and arrange internal components. They enable large thermal or liquid cooling systems and several fans at the front and rear end of the case.

A large amount of space gives you lots of room to clean the PC case thoroughly and extend its lifetime. Even after mounting all the essential components, you’ll have room for tons of customization to make the PC fit your needs.

With top-end graphic cards, high-power processors, and custom cooling systems, the Full-Tower PC cases are undoubtedly the most powerful system case.


Due to their high customization, the exact size of Full-tower PC cases varies depending upon each case. Most often though, these PC cases are 22-30 inches (55-75 cm) in height and 9-13 inches (22-32 cm) in width.

Who is it for?

The Full-tower PC Cases are most commonly used by hardcore and professional gamers. These cases are ideal for you if you’re looking for extensive performance and high customization in your PC setup.

The Full-tower Case also allows you to upgrade the PC later since it gives added slots and room for airflow units and better internal cooling.

With high-performance servers, processors, and a massive storage unit, the Full-Tower Case certainly makes for a powerful gaming PC.

So if you’re looking for a PC setup with three monitors and a 4k gameplay, the Full-Tower PC Case is the way to go!


The Full-Tower PC Case is enormous and tends to be very heavy. It occupies plenty of room and is almost impossible to transport. This reduces the portability of this PC Case down to zero. Additionally, the Full-tower PC case is pretty expensive. But it’s certainly worth the money, so if you’ve got the space and are an enthusiast, go for it!

Mid-tower PC Case

Mid-tower PC case

Mid-tower is another PC case that may be considered a step-down from the full-tower. These PC cases are the most common among users. That is because they have a lot of storage room, along with space to accommodate several graphics cards and a CPU cooler. Unlike Full-tower, Mid-tower PC cases are common among both gamers and casual users.

Since they’re so widely used, the internal components that go along with this PC Case are readily available. This makes it easier to build a DIY PC.

Despite having less space, the Mid-Tower PC case has pretty good functionality and performance. It supports E-ATX, M-ATX, standard ATX, Mini-ITX, and MicroATX motherboards.

These PC Cases can accommodate powerful graphic cards, and 2-4 internal hard drive bays mount together. They also have a comparable number of external bays for CD and DVD readers. Full-size components such as extensive video cards and expansion slots easily fit into the Mid-Tower PC Cases.

These cases also offer space for several fans that provide adequate cooling at both ends of the PC unit. This setup provides pretty good airflow throughout the PC case, keeping the temperature below 80 degrees even in intense conditions.

The Mid-Tower PC Case has an easy and accessible range for wire mounting and arrangement. This also makes the PC Case a lot easier to clean compared to smaller units.

Though not as hardcore as the Full-Tower PC Case, you can use the Mid-Tower case for gaming as well.


For Mid-Tower cases, the size usually ranges between 18-24 inches (45-60 cm) in height and 6-10 inches (15-25 cm) in width.

Who is it for?

Since Mid-Tower PC Cases cater to most motherboards, they’re considered the universal option for desktop users. These cases are perfect for regular gamers as well as casual users.


Although there is room for custom accessories, fitting additional graphics cards into the case makes cooling a hassle. Therefore, if you want other features such as custom liquid cooling, you will have to upgrade the PC Case.

Mini-ITX PC Case

Mini-ITX PC case

The Mini-ITX PC Cases are the exact opposite of Full-Tower cases both in size and functionality. These cases mainly support Micro-ATX and Mini-ATX motherboards.

These cases don’t take up a lot of space and are almost half the Mid-Tower PC case size. Although this limits their functionality, it also makes them a lot more practical to use. The Mini-ITX PC cases are built to fit in wondrously small spaces. That means you can’t use full-length motherboards, graphic cards, or larger hard drive bays in these PC Cases.

You can adjust 2-3 internal drive bays and a limited number of additional slots for RAM and ROM. Evidently, the Mini-ITX PC cases have difficulty with expandability. These PC CAses are best used for basic system tasks. This includes web browsing, using web-based applications, document, processing, and multimedia playback.

In comparison with most Desktop PCs, the Mini-ITX PC cases are pretty small. These cater to a compact design with proportions built to save space.


Mini-ITX PC Cases are usually between 12-18 inches (30-45 cm) in height and 6-10 inches (15-25 cm) in width.

Who is it for?

Mini-ITX PC cases are ideal for those looking for some basic configuration in their PC setups. Because of the restricted space, the functions aren’t too high-end, so you won’t be able to perform any intense or high-performance tasks with this PC case.


The Mini-ITX PC cases do not offer any additional hardware room or fancy cooling features. The confined spaces give way to compatibility issues as well, which is why most of them don’t even support full-length graphics cards.

Slimline PC Case

Slimline PC case

Slimline PC Case is a towering case that is turned sideways. This allows for the PC Case to have different dimensions, which take up little physical space. With a sideways configuration, you can easily place a monitor on top of the PC Case, thus acting as a great space saver.

These PC Cases are pretty slim and accommodate low-consumption components. Since there is no option to mount the components, wire arrangement becomes a difficult task.

Slimline PC Cases support the Micro-ATX motherboard and a low power supply. With a basic configuration, they are most commonly used as office machines or in-network terminals.

Due to limited space, the Slimline PC Cases demand an intricate arrangement of the internal components. This not only makes cleaning difficult but also limits the additional accessories and gives way for ineffective cooling.

That said, the Slimline PC Case is a great option for a low-budget PC. Additionally, it is excellent for locations that lack large workspace areas.


The exact size of the Slimline PC Case varies from case to case. However, the most common range is between 6-10 inches (15-25 cm) height and 15-20 inches (40-50 cm) width.

Who is it for?

Although used by some desktop users, the Slimline PC Case is most commonly used for company employees as workstations.


The Slimline PC Case allows little to no room for any additional components.

Small Form Factor (SFF) PC Case

Small Form Factor (SFF) PC case

Small Form Factor PC Cases are pretty small and accommodate even smaller components. These PC Cases are often custom-designed and built for particular tasks. SFF cases provide support for both Micro-ATX and Mini-ITX motherboards.

Primarily, SFF PC Cases are intended to reduce the size of a desktop computer’s physical footprint. SFF Cases are available in a variety of sizes and shapes, which gives them a customizable edge. These PC Cases also have cooling options other than the standard fans.

Depending on your needs and customization, SFF PC Cases can be expensive or mid-range.


Although mostly depending on customization and design, the usual range for the SFF PC Case is between 10-14 inches (25-35 cm) tall and 5-8 inches (12-20 cm) in width.

Who is it for?

Small Form Factor (SFF) PC Cases are ideal for home theaters or other multimedia setups. These cases work great for streaming audio and videos via connecting a TV or monitor.


Customizing the SFF PC Case according to your requirements takes a lot of time and effort.


All of this comes down to what your personal preferences are for the PC you wish to build. You’ll find several PC cases, all with different features and specifics. Whether you want higher performance or minimal noise, more space, or more lavish graphics, you’ll have to single down to the specifics.


Leave a Comment

Your email address will not be published.

Scroll to Top