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What To Consider When Buying A PC Case?

You must consider several points when buying a PC case: CPU cooler clearance, GPU clearance, aesthetics, build quality, price consideration, cable management, and cooling potential.

Choosing the computer chassis can be difficult for first-time builders unaware of the characteristics of cases. While other components are important, there’s no point in purchasing if you can’t fit them in your chassis. Therefore, the following article will discuss important points to consider when buying a PC case.

Schematic diagram of the PC chassis
Schematic diagram of the PC chassis – Image Credit (Research Gate)

Key Takeaways

  • There are four types of PC cases: mini-ITX, micro-ATX, ATX, and E-ATX. The only difference between them is their size.
  • Your cooling is dependent on the case size. Smaller cases tend to be hotter than bigger ones due to better airflow options.
  • You must consider several points when buying a PC case: CPU cooler clearance, GPU clearance, aesthetics, build quality, price consideration, cable management, and cooling potential.

Factors To Consider When Choosing A PC Case

Various factors need to be considered when choosing a PC case. In this section, we will discuss them briefly:

Form Factors

The first thing a consumer needs to learn when buying a PC case is how many types there are. There are four main case sizes: mini-ITX, micro-ATX, standard ATX, and extended ATX (also referred to as E-ATX).[1] 

Mini-ITX cases are the smallest, while the E-ATX cases are the biggest.[1] So, depending on the kind of build you’re going for, you’ll need to consider the case form factor.

  • Mini-ITX Cases: These are the smallest of the bunch, and if you have space constraints, then Mini-ITX cases are your friend.[2] They are compatible with only Mini-ITX motherboards. Because of their small size, Mini-ITX cases tend to have compatibility issues with larger GPUs and CPU coolers.
  • MicroATX Cases: MicroATX cases are slightly bigger than Mini-ITX cases and offer more compatibility with better airflow. If you have just enough room for a MicroATX case, then you should go with them instead of Mini-ITX. A MicroATX case can support both Mini-ITX and MicroATX motherboards, and Micro ATX motherboards are also compatible with most ATX cases.[3]
  • ATX Cases: Moving towards the next form factor, most consumers utilize standard ATX cases for everyday computer builds. Not only are they compatible with most high-end components, but they also offer plenty of airflow. If you have the room for it, then an ATX case should be the way to go.[1]
  • Extended ATX Cases: E-ATX cases are cases that support E-ATX motherboards. As you can guess, they are quite big. Therefore, if you plan on getting one, you better have a huge table to accommodate it. These cases are mostly used for workstations or high-end video editing builds that require multiple GPUs and lots of cooling.[1][4]

These are the four basic form factors that you will be looking at when in the market for PC cases. It is highly recommended that you first pick a motherboard before buying a PC case. This way, you will know the form factor of your motherboard, and hence, you can get a PC case of that form factor.

CPU Cooler Clearance

Noctua NH U12A CPU cooler
Showing the clearance space of the Noctua NH U12A CPU cooler. Image Credits Tech4Gamers

As discussed in the form factors section, the case size showcases whether you can fit a certain CPU cooler. If you’re using a mini-ITX case, chances are you’ll have to utilize low-profile CPU coolers that aren’t bulky.

Mini-ITX cases require users to fit a lot of components in an extremely limited space. For that reason, low-profile CPU coolers that are extremely thin are the best option. If you’re using a Ryzen 7000 series processor in a mini-ITX case, the Noctua NH-L9a low-profile CPU cooler is an amazing option.

In the case of MacroATX cases, you can fit most normal air coolers. They might allow users to install a 360mm radiator, but that’s about it. You will seldom find MacroATX cases compatible with AIO coolers, let alone custom water cooling.

On the other hand, if you’re utilizing a standard ATX case, you can fit most air coolers without worrying about CPU Cooler clearance. Moreover, you can place a 360mm radiator on the front and a 240mm or 280mm radiator on the top. A few ATX cases allow users to fit a 240mm or 280mm radiator on the bottom instead of the top, improving positive air pressure. You can utilize most AIO coolers in ATX cases, but keep the size of the radiator in mind.

Lastly, using an E-ATX case, you can easily fit all air coolers and AIOs and even install custom water cooling on your PC. Furthermore, you can install extra case fans on the bottom, back, and side of the case for better airflow.

GPU Clearance

MSI RTX 3090 GPU clearance while we consider PC case
Looking at the GPU clearance of the MSI GeForce RTX 3090. Image Credits Tech4Gamers

Like CPU coolers, many graphics cards are too bulky for certain PC cases. Therefore, you must know your GPU’s slot size and length when purchasing. Otherwise, you might face clearance issues.

You can probably attempt to fit an NVIDIA GeForce RTX 4090 in a mini-ITX case by vertically mounting it, but you won’t be able to keep it cool. Thus, choose a chassis depending on the components and cooling requirements of the graphics card. While a GPU might fit smaller cases, cooling it is another story.

Standard ATX cases are the go-to for most gamers because they can fit all “normal” graphics cards. Most high-end GPUs are still difficult for ATX cases, which is where the E-ATX cases come in. Not only can you fit graphics cards the size of shoe boxes, but you can also properly cool them in a bigger chassis.

Cooling Potential (Airflow)

CPU fans for what to consider when buying a PC case
Be Quiet Silent Wings Pro 4 120mm CPU fans Image Credits Tech4Gamers

Moving from space restrictions, another major factor to ponder when you consider buying a PC case is the fan orientation of the chassis. Every PC case has its unique fan layout, which users utilize to manage proper airflow.

You can place fans in 2 ways, either intake or exhaust. To identify which side of the fan is intake or exhaust, if the curves of the fan move away from you, you’re looking at the intake. To explain, intake fans help bring cool air inside the PC case, while exhaust fans take hot air outside the PC case.

Because hot air accumulates at the top of the chassis, we tend to place exhaust fans at the top of the case while we place intake fans at the front. Similarly, we place exhaust fans at the back and intake fans at the bottom. This basic fan orientation allows users to gain positive air pressure, with ample cool air circling in the chassis.

However, that’s not the only thing you should be wary of. For example, fans’ Rotations Per Minute (RPM) are important when placing in a case. If you place three 120mm fans at 1,200RPM as intake at the front of the case and an exhaust 120mm fan at 1,800RPM at the back, you won’t find any issues. Depending on the placement of the CPU cooler fan, you might start seeing negative air pressure.

Negative air pressure is when your PC case exhausts more and doesn’t get enough air inside. Although many users utilize negative air pressure in smaller cases, it’s not a common practice in bigger cases. However, if you’re using a mini-ITX or macro-ATX case, negative air pressure might be your best bet in cooling your PC.

Price Consideration

Price consideration for buying PC case
Allotting prices for different PC components. Image Credits: Buddies For Life.

Like any other PC component, cases also have their price ranges. The more features you look for in a case, the more its price will increase. Starting with mini-ITX cases, you can find a decent one for ~$65. Meanwhile, micro-ATX cases have an ongoing range from ~$70 to ~$220 in the open market.

On the other hand, the biggest price fluctuations are found in standard ATX cases, with the more affordable ones costing ~$50 and the expensive models going above ~$210. Lastly, E-ATX cases are the most expensive ones, with a price range between ~$200 to ~$700.


Thermaltake View 51
Thermaltake View 51 Snow Edition With Complete Build (Image By Tech4Gamers)

Of course, aesthetics are an important aspect to look into before purchasing. However, a case’s looks shouldn’t be your primary objective when comparing multiple cases. Depending on your budget, if you have a few extra bucks, you should invest in a better case.

The aesthetics of a case are based on multiple factors, including RGB, chassis color, and other design elements. For example, the Thermaltake View 51 Snow Edition chassis in the above image has complete white aesthetics, making it perfect for gamers who are planning on building a white gaming rig.[5]

Build Quality

Fractal Design Meshify 2 
Fractal Design Meshify 2 (Image By Tech4Gamers)

When thinking about what to consider when buying a PC case, the build quality of the chassis is necessary to look into. Usually, most cheap cases use a plastic body, which can break more easily.

However, when we look at the more high-end options, we see better-quality side panel tempered glass and alloy steel bodies. Furthermore, many cases also utilize an entire aluminum body, which provides a high-quality finish.

In any case, depending on your budget and your use case scenario, you should look for the build quality of the case. For instance, an aluminum or steel alloy body is better to water-cool your PC. Additionally, it also ensures that the PC remains sturdy and does not suffer from vibrations.

Cable Management

Fractal Design Torrent PC case
The Fractal Design Torrent PC case showcases amazing cable management capabilities. Image Credits Tech4Gamers

You can’t have good aesthetics if your case doesn’t have the capability to hide the countless cables routed throughout it. For that reason, many PC case manufacturers provide backlink cable routes, which users can utilize to hide their cables. Many cases also have cable straps, making bundling all the cables significantly easier.

Thus, better cable management ensures the longevity of the cables and improves the overall aesthetics of your case. Therefore, when considering the points to consider when buying a PC case, cable management capabilities should be noticed, especially if you are looking at aesthetics.

Final Thoughts

In a nutshell, as far as the factors to consider when buying a PC case are concerned, all of them are related. For example, if you want better aesthetics in your build, you’ll need to keep cable management and build quality in mind. Moreover, if you want a specific case form factor, you’ll need to keep the CPU cooler and GPU clearance in mind while also considering the cooling potential of the chassis.

Price considerations depend on your budget and your use case scenario. Therefore, keeping everything in mind, you can choose the perfect chassis for your next build.

You can’t fit an E-ATX motherboard in a micro-ATX chassis. However, you can fit a micro-ATX motherboard in an E-ATX chassis. So, depending on your components, you must judge which case best fits your needs and wants.

More Helpful Resources By Tech4Gamers:


  1. Tech4Gamers. Motherboard Form Factors [All Types & Difference]. Retrieved from

  2. HCC Learning Web. Chapter 2: Form Factors, Power Supplies, and Working Inside a Computer. Retrieved from

  3. Personal Computer Systems. Motherboard. Retrieved from

  4. University of Massachusetts Amherst. Building Your Rig 101: Motherboards. Retrieved from

  5. Tech4Gamers. Thermaltake View 51 Review: Unboxing + Benchmarks. Retrieved from

Frequently Asked Questions

Is it okay if my PC case is open from the side?

Keeping your PC case open from the side exposes it to dust and other particles. However, you can also reduce temperatures slightly due to better excursion of hot air. We don’t recommend keeping the PC case open as dust particles can stick to the fans, disrupting the cooling and risking the components’ life.

Do PC cases help with cooling?

PC cases are essential to ascertain the cooling you can go with. For example, a smaller case allows fewer fans, but a bigger case can also support water cooling and radiators.

How many case fans should my PC have for proper airflow?

The number depends on the size of your case. If you’re using a mini-ITX case, you can barely fit 1-2 case fans at most. If you’re using a micro-ATX case, you can fit a 360mm radiator at the front or the top of the chassis. ATX and E-ATX cases allow for 5-10 case fans generally.

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