Creating your dream PC involves selecting a case and all other internal components. The PC case is vital since it will hold and protect all your sensitive (and expensive) hardware. The most common form factor is the mid-tower. It's a medium-sized chassis that supports up to E-ATX motherboards, multiple drives, larger AIO liquid cooling radiators, and beefy power supplies. Small form factor (SFF) cases, known as Mini-ITX, are great for saving space and accomplishing something unique. Here's why your next PC should be a compact challenge.
6 More portable than other cases
Because small form factor cases are generally smaller and lighter than their mid-tower counterparts, you can easily move a compact PC to other positions or locations. This makes them perfect for LAN parties. They also require less desk space and can be configured in such a way that brackets and other parts of the home could be used to hold your PC, something a mid-tower (or something even larger) may struggle to do, given their increased dimensions and weight.
5 Unique design
Working with smaller dimensions forces case manufacturers to think outside the box for SFF designs. You can get some truly whacky and incredible solutions to various SFF-related problems. You'll find sleek cases with a focus on cooling and aesthetics over lighting and other gaming elements since these cases are typically used by those who don't wish to install six RGB-enabled fans with glorious lighting effects. It also allows for slightly messier cable management with the inability to see inside the PC.
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4 A great challenge to overcome
The best part about building an SFF PC is the challenge. You'll likely have to come at various parts of the build at a different angle, sometimes literally. These smaller chassis don't have much internal space, so the order in which each component should be installed may differ from case to case. You'll need to be smart about cooling since the choice of air and AIO liquid coolers will be limited due to a lack of space and support. Then there's storage; do you have space for a hard drive or SSD?
3 Requires less space
A more compact case requires less desk space. If you're low on available space with your monitor, keyboard, speakers, and all other PC accessories, an SFF PC can be useful in freeing up space compared to a mid-tower system. Even replacing your tower on the floor can provide more legroom, should the new PC be configured on the desk or behind your monitor, should it be a mini PC. Smaller systems with slightly lower power requirements can even reduce your consumption, which can prove useful in an office environment.
And because you have fewer fans sucking in cool air, there's a lower chance of the insides filling up with dust. You should always regularly clean your PC (a good rule is once a month) but an SFF can help make it easier than larger systems with more airflow. Throw in a dust filter and you'll have yet fewer particles make it inside the case.
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2 Quieter with fewer fans
Because your smaller case will have fewer fan mounts, you won't have as much noise generated by the PC. An SFF case could have as few as two fan mounts, sometimes even less, with most of the airflow generated by the CPU cooler. The fewer spinning blades you have, the less noise will emanate through the vents and openings. And because we're looking at fewer fans, you'll often come across support for 140mm or larger fans. The larger the diameter, the slower it can spin without sacrificing airflow.
It's worth noting that should install high-performance parts, such as an AMD Ryzen 9 9950X and Nvidia GeForce RTX 5090, you'll deal with a lot more heat than the cooling solution will likely handle without spinning up to maximum speeds. It's important to consider the parts you'll install inside the SFF case.
1 More versatile than a mid-tower
A small form factor PC is more versatile than a mid-tower chassis. Creating a home lab server? A SFF case is a good bet. Home media streaming box? SFF is the way to go. This is one versatile case type and while you can use a larger chassis for these roles, you'll lose the portability and smaller dimensions. It's misleading to look solely at the specifications sheet of an SFF case as it won't look promising with fewer motherboard form factors supported.
You won't be able to install as many fans, drives, and other devices, but this is what makes the SFF case so good for other use cases (pun not intended).
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Learn something new today
Building a compact PC with a small form factor case is a great way to learn new skills when putting together your dream gaming rig. You can create something truly unique with a smaller chassis, and end up with something more creative since you'll likely have to overcome some challenges. It's not for everyone since I wouldn't recommend fitting the most powerful components inside the smallest chassis, though you technically could, yet building an SFF PC is a different experience.