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Biggest PC Cases – Largest PC Case For High End Builds 2021

Building your own gaming rig can be a tough yet rewarding experience. But it’s not just about choosing the right parts and assembling them in a case as big as you want – there are other considerations to take into account. 

There are a lot of different computer cases to choose from on the market. It can be hard to know what the best gaming computer case 2021 is for you with so many options.  

You might want to consider some factors before making your decision, such as how big your build area is and if you have any particular preferences when deciding on a color or style. This buying guide will help with those decisions! 

It all comes down to how much cooling capacity you need, what kind of backup storage solution you would like (some cases come with built-in hard drives that store data when power is lost), and whether or not you want a windowed side panel so people can see inside your build. 

And if any of these things sound complicated for you, don’t worry. We’ve compiled a list of some of our favorite extreme gaming PC cases from every budget. 

We’ve gone through the list of top cases and compiled a comprehensive guide for you to create an extreme gaming PC. The first thing we recommend is that you ask yourself if you want a backup, so your performance doesn’t dip while streaming or multitasking. 

Once you know what type of cooling capacity, it’s just about how much room do you need in the case? How will this help showcase your build? You can find out more by reading our buying guide! 

Our recommended list of the biggest PC cases

  1. Thermaltake Core W200 Water Cooling XL-ATX
  2. Corsair Obsidian Series 1000D Super-Tower Case
  3. Thermaltake Level 20 E-ATX Full Tower Gaming Computer PC Case
  4. Thermaltake View 91 RGB XL-ATX Gaming Tower Computer Case
  5. Cooler Master Cosmos C700M E-ATX Full-Tower
  6. Thermaltake Tower 900 Fully Modular E-ATX Vertical Tower Chassis
  7. Thermaltake AH T600 E-ATX Full Tower Case
  8. Antec Torque Aluminum ATX Mid Tower Computer Case
  9. Deep Silence 6 Super Tower HPTX Case for Sensitive Audio Workstation
  10. Thermaltake Core P8 Tempered Glass E-ATX Full-Tower Chassis

1. Thermaltake Core W200 Water Cooling XL-ATX 

The Thermaltake Core W200 is the largest PC case available for personal use and is designed to accommodate any large build. It’s also able to hold two builds at once, which means you’ll never have an issue finding a place in your home or office that can fit it. 

The sheer size of this case makes other options obsolete; there are almost no cases out there that could compare with its overall volume, almost 7 cubic feet. The measurements of the case are 27.1 x 29.5 x 15 inches that mean this beast is huge. 

The Thermaltake Core W200 is a level of redundancy that you’d almost struggle to find a use for in an everyday home setting. You might have to be mining crypto while running 144 Hz games. Just so the two full, distinct XL-ATX builds will get some worth out of them, anything less than that. 

It would probably be better off putting all your money into cooling and the main build with a second motherboard as a backup for streaming or background operations. The Thermaltake Core W200 features, but the most notable feature may be its modular design. 

The case can not only be reconfigured to rest sideways; it also has room for 10 fans and various other additions around the top, bottom, front, and back by default. The Core W200 is a PC case with an attractive design that means you can add more fans or liquid cooling as needed. 

The Core W200 is a heavy, sturdy case. In light of that, it’s disappointing the side panel is acrylic rather than tempered glass found in most builds.

2. Corsair Obsidian Series 1000D Super-Tower Case

The Obsidian series is one of the most sought-after computer cases in PC gaming. Corsair’s latest iteration, the 1000D Super Tower, offers up an insane amount of space and features for any avid gamer to drool over. It can house two full build stations or a single powerful rig with room left over for storage and cooling needs. 

An aesthetically pleasing design coupled with premium quality craftsmanship makes this case stand out from every other contender on today’s market.

The Corsair Obsidian Series 1000D Super-Tower Case is a beastly case that can hold two separate builds. This massive gaming PC stands 697mm (or 27.4 inches) tall, 693mm (27.3 inches) deep, and 307mm wide (12 1/2″ inch). That’s over five cubic feet of space. 

The new 1000D case provides enough space in your gaming rig to handle everything from high power EATX builds down to smaller mini ITX systems that can be used as backup or light work computers. 

The Corsair Obsidian Case is perfect for gamers or workstation users. It provides enough space to allow simultaneous hard drive and graphics card installation. While also maintaining the ability to do some high-quality gaming at a moment’s notice. 

In addition, this tower case holds two separate motherboard spaces, which can make it easy for one person to work on an EATX build of editing software or rendering video. At the same time, another uses the mini ITX board in order to play games with less waiting time.

3. Thermaltake Level 20 E-ATX Full Tower Gaming Computer PC Case

The Thermaltake Level 20 case features a compartmentalized design that provides plenty of space for components and storage. The high-quality construction ensures it is able to withstand the rigors of everyday use, while an included set fan speeds up cooling during intense gaming sessions or heavy workloads. 

Quick access to all internal compartments means you can upgrade your computer’s hardware with ease, which will make sure everything inside runs smoothly without any overheating issues. 

The Thermaltake Level 20 is a unique and interesting case with many compartments for your build. One of the few cases you can use to house an E-ATX motherboard. 

It also has three main areas separated: The core build area, the HDD rack, and the power supply compartment. It’s surprising how narrow this large case measures when looking at dimensions; 732mm (28.8 inches) tall by 688mm (27.5 inches) long and 280mm wide (11 inches). 

These are all features that make this new design stand out among others on shelves today. The Thermaltake Level 20 is revolutionary in that it offers an unprecedented amount of space. 

It can support as many fans and radiators to make sure your gaming rig gets the cooling necessary for high-end performance, but there are only three preinstalled locations in this case. 

One is at the front, back, and side panel between the HDD or motherboard chamber. Level 20 is a spacious case that can be customized to fit your needs. The leading radiator mount can carry up to 480 mm radiator.

4. Thermaltake View 91 RGB XL-ATX Gaming Tower Computer Case

The Thermaltake View 91 is an oddity in the world of computer cases. It has a smaller cubic area than other models like Tower 900. Still, it can house more and bigger components that are typically top-of-the line when compared to competitors’ offerings from the same company. 

The Thermaltake View 91 is a perfect case for gamers who want to build and upgrade. Its spacious design allows you to easily choose between an XL ATX motherboard or a standard one. 

In contrast, the included cooling components allow your computer system to stay cool enough even during intense gameplay sessions. Like Tower 900, this case is big enough to fit custom liquid cooling and a dual loop system. 

There are two options for GPU mounting: traditional or vertical. Both side panels are tempered glass, which allows you to show off your core components and your cooling but makes cable management more difficult than other cases without any windows. 

With 12 HDDs available in rack configuration, storage space can be maximized while keeping everything neat as well. The case now ships with RGB components already installed and has four 140mm fans pre-installed. If you stick to air cooling, you can install up to ten 140mm or twelve 120 mm fans total. 

If liquid cooling is your goal, this case offers the most space of any on our list, with room for three radiators measuring up 480 mm in height (on top, side, and front). The dimensions of this PC case are 691 x 344 x 645 mm, and it weighs around 59 pounds. 

5. Cooler Master Cosmos C700M E-ATX Full-Tower

The Cooler Master Cosmos C700M commands to be both massive and silken at the same time, in a way that yells space-age power. The curved tempered glass panel permits you to showcase components while still retaining an air of secrecy with its blacked-out edges around the frame. 

It measures 650 mm (25.6 inches) square by 305 mm (12 inches) thick as it is built for large builds up to E-ATX motherboards or even dual GPUs vertically mounted. The coolest of the cool, this monstrous machine is built to handle your expansion needs. 

The vertical GPU mounting guarantees that you’ll have room for a top-of-the-line graphics card and boasts an internal PCI-E cable system to keep all those wires in check. Plus, it’s got full support for custom liquid cooling, so you can be sure your PC will stay cold as ice. 

The Cooler Master Cosmos C700M is a true testament to the power of cooling in computer cases. The case offers four 140 mm PWM fans and, even without any internal HDD slots or racks, can house up to six 120/140 mm fan spaces perfect for those who want maximum airflow with minimal noise levels. 

The Cosmos C700M is the most unique and versatile case on the market. The aluminum construction paired with tempered glass side panels makes it stand out in both style and performance. 

It is prepared in either black or brushed metal, so you can decide how your rig stands out from all others. With handles at the top for easy carrying, this beast of a case has room to accommodate any build while remaining stable.

6. Thermaltake Tower 900 Fully Modular E-ATX Vertical Tower Chassis

The Thermaltake Tower 900 Super Tower Computer Chassis has everything a PC gamer needs with the bonus of being an excellent display case. The point of having such a large chassis is unparalleled gaming performance, but if we’re honest, showing off is also important, and this one’s perfect for that. It stands 752 mm (29.6 inches) tall and 483mm by 424 mm square. 

It can accommodate EATX motherboards and other components like CPU coolers up to 170 mm high or length; graphics cards as long as possible 400+/-10 millimeters without interfering with side panel clearance. 

The Thermaltake Tower 900 Super Tower Computer Chassis has enough space to show off a custom liquid cooling configuration, including dual loop setups. The case also includes two case fans designed to pull air through the lower section of your system for better airflow and heat dissipation. 

It has plenty of room for endless tinkering and customization, including modular motherboard trays, liquid cooling mounting points in front-and-top panels separately from air venting holes to avoid leaking any fluids inside your computer components. 

It has excellent construction quality for its affordable price, which will make it an attractive option for people on the go that want something reliable without breaking their bank account. However, this product does require more space than some other cases due to all the extra features. 

7. Thermaltake AH T600 E-ATX Full Tower Case 

Thermaltake has always been a leader in PC cases, and their latest addition to the lineup is no exception. The AH T600 Helicopter Styled E-ATX Full Tower Case features plenty of room for all your components, as well as an attractive exterior that can be customized with LED lighting or even dual color options. 

The Thermaltake AH T600 Helicopter Styled E-ATX Full Tower PC Case is not your average everyday computer case. This behemoth of a tower measures 645mm (25.4 inches) long, 365mm (14.4 inches) wide, and 765 millimeters tall. 

That’s big as far as commercially available cases go, even when you account for the slight angles created by the design that makes it look bigger than its raw measurements. This case is a helicopter-styled PC that can hold any full-size EATX board and all the components you could ever want to attach. 

It has sleeved liquid cooling, silent operation from two 120 mm fans on either side of your motherboard mount, as well as a central island for easy cable management in this large design. There’s a total of 8 PCI-E slots, meaning that you could install up to three graphics cards in this case. 

The design is also versatile and allows for the installation of either horizontal or vertical style motherboard mounts depending on your needs. The Thermaltake AH T600 Helicopter Styled E-ATX Full Tower PC Case can hold up to 360 mm radiators on both the top and side as well as 480 mm radiators at the head. It is available in black, white, or pink, so you have a variety of color options for your case.

8. Antec Torque Aluminum ATX Mid Tower Computer Case

The sleek design and bold colors of the Antec Torque are sure to make a great first impression. With features like modular drive bays, room for water cooling, dual front USB ports with audio in/out support on top of this case’s unique styling. You can never go wrong with your build inside an ATX mid-tower computer case that has been designed from start to finish by gamers just like yourself. 

Antec Torque Aluminum ATX Mid Tower Computer Case is a stylish yet spacious case that can accommodate motherboards up to E-ATX size. With plenty of clearance for cooling and storage, this beautiful red aluminum tower gets your system off the ground with ease. 

The diameters of this biggest PC case are 25.4 x 24.4 x 11.2 inches. It has an open design which allows for more airflow than other cases, but with a limited fan space, it can only fit six fans and two radiators. 

One of the best features about this case, though, is that you can mount your GPU vertically in addition to being compatible with PCI-E cables from previous generations. 

The Antec Torque Computer Case is a sleek, eye-catching tower with all the features you could want in your next computer case. It’s lightweight and has room for plenty of hard drives or SSDs and graphics cards that are up to 3 inches high, even though it doesn’t have an included cable.

9. Deep Silence 6 Super Tower HPTX Case for Sensitive Audio Workstation

The Nanoxia Deep Silence 6 doesn’t look like much. It’s a purely practical case, but don’t let that fool you. Silence is just one of its many features. This computer case has been reinforced and insulated in such ways as to minimize the noise coming off your PC. 

Without sacrificing space for powerful hardware or creating an impenetrable heat trap inside your rig. The dimensions are 25 inches high, 9 inches wide, 26 inches long, with plenty of room for even the most demanding builds. 

The Nanoxia Deep Silence 6 PC case is an efficient, aesthetically pleasing machine. It’s one of the few cases on the market that can hold an HPTX motherboard and a narrow design means you’ll have to be extra careful installing your GPU as well as your best CPU cooler

The dedicated space for HDD cages also ensures easy installation and protection against data loss or damage due to overheating. Plus, there’s room for liquid cooling too! 

And if you choose air-cooling over water, then it has spots for 2x 120mm front fans in addition to 1x 140mm rear fans (with both coming preinstalled), so all around, this case does everything right without any compromises. 

In this Deep Silence 6 PC case, the sides can take two 120 mm or 140 mm fans. The best part is that it ships with five of them installed out-of-the-box. Air intake takes place through a chimney on top, and ventilation happens from both front and rear vents along with the bottom panel. 

This design ensures plenty of airflow for speedy performance in demanding tasks without too much noise to distract you while playing games or listening to music.

10. Thermaltake Core P8 Tempered Glass E-ATX Full-Tower Chassis 

The Thermaltake Core P8 is a big EATX case with support for custom cooling. It has space for horizontal and vertical radiators, six different spots to install fans (three 120 mm in the front of the chassis). 

It also comes with roomy cable routing options, including rubber grommet protection and everything else you would want from an extreme gaming PC tower. 

Like tempered glass panels on both sides so your hardware can be seen clearly while some serious airflow is cooling it. The Thermaltake Core P8 Computer Case is the first case of its kind to offer a full side, top, and front tempered glass window. 

This gives you an unobstructed view of your system’s cooling in action as it pumps air out from every fan that works hard to cool down your PC, with support for up twelve 140 mm fans or sixteen 120 mm fans (a total of 32). 

This case also has more than enough space for liquid cooling with install options including up 240 mm radiator on both sides, 480 mm radiator on one front side, plus 360/120 mm radiators at the back. Which can all be placed either horizontally or vertically depending upon what configuration suits best. 

Thermaltake has been a trusted name in the gaming industry for years. The company knows how to make products that gamers want, and this is one of them. 

With its impressive features, such as the full-tower design with tempered glass panels, you get an open side panel option or enclosed case depending on your preference, along with all-black color options so it will fit any gamer’s style or setup needs.

Largest PC Cases Buying Guide:

PC cases are one of the most important parts of your computer, which is why it’s so important to choose the right one for you. There are many different sizes and types available, with a variety of features that will suit every need. All these points will be covered in detail below!

Modular Form:

The cables of a computer are one the most annoying parts of any build. They can get in the way, frustrate you to no end, and make your PC look like an unorganized mess if not planned properly. Fortunately, some solutions for this problem have become commonplace with new cases out now, such as cable management features on either side or behind the motherboard tray, so they’re hidden from sight at first glance but still easily accessible when needed. 

Leading Panel:

PC cases have a lot of variation when it comes to the front panel. This is where you usually find headphone jacks, mic jack, USB ports, and other types of connectivity. You can find either two or many more than that depending on your needs for how many devices need access to these features easily from in-case plugs instead of wasting time picking out which ones are the best quality.

Clearance:

You might not think you need to worry about whether your new PC will fit together when the components are all plug-and-play, but there’s more than meets the eye. In some cases, it is important for each component, like aftermarket air coolers or higher-end graphics cards that may be longer due to their size and length requirements. Especially expansion slots on motherboards have enough clearance height between them so they can work properly in a case.

Size of a case:

We get a lot of questions about computer case sizes. There are four main types, and they’re categorized by size: Full Tower (Large), Mid-Tower (Medium), Micro-ATX (Small), or Mini ITX(smaller). The most popular form factor is the Extended ATX motherboard which can fit more powerful components like graphics cards with larger heatsinks. At the same time, Standard ATX motherboards will be limited to 144mm. 

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