Introduction
A PC case, also referred to as a computer chassis, a tower, system unit by many people, or tech savvy's, is the unit or enclosures of the computer that contains most of the computer's essential components. It excludes the display, keyboard, and mouse. The best PC cases under 100 are usually built of solid steel, aluminum, or plastic as these materials support the computer's internal hardware.
In some cases, materials like acrylic, glass, wood, and even Lego bricks have appeared in some of the home-built cases. So I have handpicked a list of best PC cases under 100 to help you choose the best one. Without wasting time, lets get started!
Also see our recommendations on Best Mechanical Keyboard Under 50.
REVIEW OF best pc cases under 100
1) NZXT H510 - CA-H510B-W1

This is one of the compact, fulfilling and stunning best PC cases under 100. It has an excellent value and is great if you are looking for an ATX case that doesn't sacrifice on features and looks.
It has a USB 3.1 Gen2-compatible USB-C connector in the front which makes it super easy to connect to your smartphones or your external storage.
The clean and modern black and white case along with the cable management bar shows its stunning build. The cable management kit comes with a pre-installed set of channels and straps which makes it easy to use and also one of the best pc cases under 100.
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2) Thermaltake V200 Tempered Glass RGB Edition

This is a beautiful pc case under 100 with 16 lighting modes which make it classy and fashionable. It is a good option and it is cost-efficient and affordable.
It comes with a tempered glass window at the left side which is designed to tighten screws at each corner. This glass is strong, durable and can withstand pressure to become one of the the best pc cases.
The built-in PSU cover hides the cables and wired out of view to give it a cleaner look. The lighting modes are exciting and beautiful and you can change the color as per your requirement. You can choose between 16 ranges of colors. So it is one among the best pc cases under 100.
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3) Rosewill SRM-01B-450

This compact and sturdy office is one of best pc cases under 100. Its mini tower computer case is portable and highly durable.
You can now enjoy long-lasting performance with an interior that has a lot of space for all your requirements and is also versatile for your current hardware and supports future upgrades.
This is a best pc case as it looks simple and supports your technologies and upgrades. The fans work efficiently and are perfect for cooling the system.
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4) Corsair 275R Airflow Tempered Glass Mid-Tower Gaming Case

If you are concerned about the quality of pc case, then check out this one. This sleek, white and transparent gaming pc case is a perfect epitome of style, beauty and strength. The Corsair 275R Airflow Tempered Glass Mid-Tower Gaming Case is a model designed to be one of the best pc cases for your personal computers.
It is designed for efficient cooling as it comes with 3 fans. There's always room for more. It is highly spacious and the drive trays can fit most of your computer parts and upgrades.
This case is beautifully designed and it's transparent tempered glass gives it a rich and classy look and allows you to see through your case.
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5) Cooler Master MCY-B5P2-KWGN-01

This beautiful looking pc case has RGB lighting which makes the case look not only sporty but also classy and stylish.
It provides great cooling to the internal hardware. This is a great case if you're someone who's looking for a sporty and gaming pc case. It is designed with excellence and perfection to become one of the best pc cases under 100.
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6) AeroCool Cylon RGB Mid Tower

Next up in my list of best pc cases under 100 comes the Aerocool Cylon RGB mid tower pc case for users who wish to have a more classy looking case. AeroCool is a trusted brand and is widely recommended by many users.
This case has a stunning color scheme as it is equipped with backslash LED with 13 lighting modes on the front, 6 RGB flow lighting modes and solid 7 color modes, which makes it a complete package of colors. It's a good PC case, but not the best one.
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7) DeepCool MATREXX 55 Case

The DeepCool MATREXX 55 Case is also one of the best pc cases under 100 that supports E-ATX Motherboard. It also has enough fans to support and cool the case and the personal computer.
This is not ideal for professionals and tech-savvy people who are great critics of technology. It is a minimalistic case with decent features to meet your requirements. DeepCool is a renowned brand and you can surely trust its products.
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8) DarkFlash Darwin Black ATX Mid-Tower Desktop Computer Gaming Case

This classic black and white is one among the best pc cases under 100. It's a combination of style and perfection. This is one of the best-looking pc cases in the market and one should surely consider this.
It has good features and it is surely a "must-consider" best pc case because of its features.
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9) Phanteks Eclipse P350X (PH-EC350PTG_DBK)

The Eclipse P350X is a small E-ATX mid-tower is one of the best pc cases under 100 with an efficient and effective high-airflow design. The case has an amazing intuitive feature of the convenient installation of full-fledged GPU and PSU systems.
It has an integrated Digital RGB lighting along with spacious interior and easy cable management systems. What else would you ask for in a pc case?
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10) GOLDEN FIELD M3S ITX Mini Computer PC Case

This matte, compact pc case is the best for small computers as it is a mini computer case. It is simple, stylish and has an avant-courier frame design.
The side panel increases the visual space and this allows you to enjoy your gaming time. It also has an enlarged transparent window panel made for you to enjoy your case.
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Conclusion
A best pc case should define you. You should know your computer case and choose it wisely. A lot of computers come with a pre-installed pc case but you can obviously change it as per your needs.
It is customizable. Keep in mind that you have to choose your best pc case under 100 depending on the specifications and features it offers. Try not to choose it on your own. Ask a person who knows a bit about them and do your research before you buy one.

I’m Peter, a freelance writer, researcher and part of the EnterTheUnderWorld team. Writing intrigues me a lot and it is also fun. I believe that I am good at researching different varieties of products from different categories. My aim is to help people who are looking for any product under a specified budget. So you can find different articles covered under varied budgets on this website. All the products are tested and used by me so that I can write the review precisely.