5 Best cube computer cases [2021 Guide]

Matthew Adams
by Matthew Adams
Windows & Software Expert
Matthew is a freelancer who has produced a variety of articles on various topics related to technology. His main focus is the Windows OS and all the things surrounding it. He is passionate about... Read more
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  • Cube-style cases enable users to set up more compact desktop PCs than standard tower ones.
  • This guide tells you about five of the best cube cases to set up custom PCs with.
  • Our Buying Guide hub includes a plethora of articles that provide details for the best PC hardware and software available.
  • You can browse through numerous desktop PC articles at our Computers page.

Desktops with tower cases are by far the most prevalent PCs. However, cube computer cases are a refreshing alternative for users who prefer to build their own PCs from scratch.

Cube cases are smaller, more compact ones that take up less space than standard rectangular tower ones.

Note: Deals are subject to change. Sometimes, some of the deals listed in our guides may no longer be available by the time you hit the buy button. So, hurry up and grab them while they’re hot.

What are the best cube cases for custom PCs?

Thermaltake Core V21

  • Can fit large graphics cards
  • Stackable design flexibility
  • Supports all cooling system types
  • Includes a couple of magnetic dust filters
  • Lacks an optical drive bay

The Core V21 is a good value and stylish cube case for Micro ATX and Mini ATX motherboards. Its case includes a transparent glass window on one of its side panels. One side of its case includes holds that enhance the PC’s cooling, which is further enhanced by its 200mm front panel pan.

This case can fit in expansive 13.5 graphics cards, six storage devices, 7.3-inch tall CPU coolers, and 350mm dual expansion VGA slots. The great thing about the V21 is the stackable design flexibility that enables users to expand it by stacking one V21 case on another.


Thermaltake Core V1

  • Interchangeable side panels
  • Its users can fit all cooling system types
  • Low price
  • Grilled panels enhance cooling
  • Its 10-inch graphics card maximum length is a bit restrictive

The Core V1 is a similar, but more compact and cheaper, case to the V21 specifically for Mini ITX motherboards. It has the same chamber concept design and similar grilled panels that optimize its ventilation. Like the V21, the V1 also includes a pre-installed 200mm fan.

The Core V1 can pack in four storage devices, a 140mm tower CPU cooler, 10-inch long graphics cards, and a 260mm dual VGA expansion slot. So, this is a good budget alternative to the V21 for users who don’t need so much case space for their PCs.


AI Crystal Cube AR

  • Stunning RGB lighting effects
  • Transparent panels
  • Compatible with four motherboard form factors
  • Fits big graphics cards
  • It’s pricey

If you’re looking for a cube case with visual appeal, the AI Crystal Cube AR is the one for you! This case incorporates five amazing RGB lit fans and RGB LED strips that make it shine. The Crystal Cube AR also has a transparent tempered glass design.

Aside from its visual appeal, this case supports M-ITX, E-AT, larger ATX, and M-ATX motherboards. It can fit in 13.1-inch graphics cards, a 240mm radiator, six 2.5 drive bays, and three 3.5 drive bays.


Fractal Design Node 804

  • Strong design and build
  • Plenty of expansion slots
  • Good liquid cooling features
  • Tempered glass side panel
  • Lacks a reset button

Node 804 is a cube case for Micro-ATX and Mini-ITX motherboards with a minimalist, yet elegant, aluminum and steel design.

This is a case with a dual-chamber design that enhances its cooling. The Node 804 has strong design and build quality and an especially good liquid cooling support.

This cube case incorporates eight 3.5 hard disk drive positions and two positions for SSD drives. The Node 804 fits graphics cards up to 12.6 inches. With five expansion slots to boot, this case doesn’t lack hardware space.


CORSAIR Carbide AIR 540

  • Comes with three Air Series AF140L fans
  • Plenty of component space
  • Advanced airflow design
  • Designed for straightforward building
  • Wide motherboard compatibility
  • Plastic side panel flexes slightly
  • Only two front USB ports
  • No transparent panel

CORSAIR Carbide AIR 540 is an expansive and sturdy steel cube case that’s compatible with all motherboard form factors. It has an unconventional dual chamber design that gives it enhanced airflow for better cooling. That design and the case’s high-performance fans ensure excellent cooling.

Another good thing about the Air 540 is how it has been designed for a quick and straightforward building. Its tool-free PCI and storage installation, unfettered motherboard access, and huge partition wall cutouts make putting together PCs a breeze.

This is also a spacious cube case with eight expansion slots. It can hold 12.6-inch graphics cards, 170mm coolers, and 250mm PSUs. Furthermore, the AIR 540 has plenty of room for one radiator at the top.


These cube cases are great alternatives to more cumbersome full tower case PCs.

Although they’re smaller cases, you can still set up some serious Windows gaming rigs with them.


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Frequently Asked Questions

  • All of the above cube cases are worth noting, but the CORSAIR Carbide AIR 540 is a generally very highly rated desktop case.

  • Full tower cases are generally the biggest, but some users prefer more compact cube cases that can still pack a lot in. Our best tower case guide provides details for the best PC tower cases.

  • Yes, as water liquid cooling is more efficient for cooling CPUs than fan air cooling. Check out our best AIO coolers post for further details about the best liquid coolers.

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