Best Slim ATX Cases

Thermaltake Core G3

SPECIFICATIONS

Slimness: 5.5 inches thin | Motherboard: ATX, Micro-ATX, Mini-ITX | Dimensions: 17.9 x 14.6 x 5.5 inches | Included Case Fans: 2x 120mm | GPU Length: 310mm | CPU Cooler Height: 110mm | Liquid Cooling Support: 1x 240mm |

The Thermaltake Core G3 is an excellent foundation for slim ATX gaming systems, it has a perforated front that gives the advantage of airflow and helps with maintaining the temperature around the components and layout set for two-way placement, standard vertical (tower orientation), or lies horizontally and secures with rubber feet.

Both options are suitable depending on your choice of displacements to see through the side windows. However, we chose it for superior reasons, and it solves many issues that many people believe slim profile cases lack, such as airflow, which the front vents take care of, and compatibility with water cooling, which we have confirmed that it can fit up to 240mm radiator or an All-in-one in the front, and that’s all being a sweet match for budget builds at the price of $79.

Another significant advantage of the Core G3’s slimmest chassis is that it delivers on its promise of packing powerful technology into a compact space, making it ideal for VR gaming setups, space-saving HTPCs, and modern minimalist minicomputers. We had little trouble deciding because we were previously aware of the case from our smallest ATX listing, and it truly meets the demands of a compact computer.

Although it requires a little additional work to bid, which can be worth the extra effort. You have to deal with an inverted motherboard and all of its components, make no mistake, this is a left-hand drive chassis, and the inverted architecture is something that enthusiasts never overlook simply because it is uncommon, like unique PC cases.

Moving on to the constraints, its dimensions only accept an SFX power supply, not an ATX, and no SFX-L, while carrying an overall complete ATX design, so you’ll need to spend money on a tiny PSU to work with your build, which might be a pricey decision.

Furthermore, it supports a maximum GPU length of (310mm) 12 inches, however, there are two sacrifices; large cards can only be placed via a riser cable, which seems unfair for a vertical board, and the provided raiser cables are worthless and lack performance output.

So, you need to get yourselves a current-gen riser cable that fits your card nicely. The second concern is not for every PC builder, you have to remove one of the front fans to install the full-size card, and it will most likely trim your 240mm option to a single 120mm AIO water cooler.

SilverStone Grandia 11 (GD11B)

SPECIFICATIONS

Slimness: 6.93 inches thin | Motherboard: ATX, Micro-ATX, Mini-ITX | Dimensions: 15.71 x 17.33 x 6.93 inches | Included Case Fans: 2x 120mm | GPU Length: 310mm | CPU Cooler Height: 146mm | Liquid Cooling Support: 1x 240mm |

Looking for a great HTPC case? SilverStone has the best option in the market with their Grandia 11. Not only is it stylish, but it offers incredible functions that enhance the performance of your computer. It can easily hide in plain sight thanks to its stereo-shaped design, which makes it appear more like a Bluetooth speaker than a computer.

This makes it a safer option for crowded areas because it won’t topple over like full towers and won’t cause any safety concerns because it will be misidentified as a sound system rather than a PC, plus, it supports the Kensington lock, just like laptops, so stealing it is out of the question.

Grandia 11’s specialization is installing hefty graphics cards and spacious with proper cooling capabilities, can fit a standard ATX motherboard, standard ATX PSU, and 340mm large video card, most suitable for RTX 3080, and it can shiver a 240mm water cooling radiator as well.

You may simply add up to three 3.5-inch HDDs and M.2 SSDs to your motherboard, providing plenty of storage. However, this is an undervalued chassis that most builders neglect due to its flat shape and lack of towering height, but the $208 price tag makes a lot more sense, similar to our listing for Horizontal PC cases.

The case is owing to the material quality, and solid structure will endure longer and function as a home computer for years to come. It provides everything in the slimmest ATX footprint, which includes a USB Type-C (IO port), plus it’s lightweight and aesthetically beautiful.

Also, the fan controller assures the flawless operation of the two included fans. Even under severe loads, the system does not throttle since the front speaker mesh functions as an air inlet, allowing for good ventilation.

Thermaltake Core X71 TG Edition

SPECIFICATIONS

Slimness: 9.8 inches thin | Motherboard: ATX, Micro-ATX, Mini-ITX | Dimensions: 20.1 x 9.8 x 26.7 inches | Included Case Fans: 2x 140mm (LED Blue) | GPU Length: 420mm | CPU Cooler Height: 180mm | Liquid Cooling Support: 1x 480mm, 2x 360mm, 1x140mm |

When it comes to Thinline design, the Thermaltake Core X71 TG edition is the slimmest ATX case. It carries a mix of modern and retro design that favors high-end components and provides more room for liquid cooling.

The full tower size has provided great customization to fit the personalities of the gamers and modular capacity making it easier for hobbyists to put together high-end systems at a reasonable cost of $158, which is less than the minimalist PC cases with noise reduction technology.

Its big size encourages PC builders not to overlook the potential of a spacious interior with more than one room to work in. There are three compartments: a Primary cabinet for the motherboard, CPU, GPU, and case fans and huge radiators, a Secondary cabinet at the bottom for the power supply, additional case fans, and extra radiator and storage cages, and the Third chamber for wire management to keep its appearance tidy for presentation.

This is mostly for DVDs and Blu-ray enthusiasts. Thermaltake Core X71 features not one, but two 5.25-inch bays on the front top for that purpose. Which is a kind of old-school, but it supports up to two 5.25-inch HDDs in addition to five SSDs or 3.5-inch compact hard drives.

Thermaltake makes a strong statement about cooling the Core X71, recommending powerful liquid-cooled GPU and CPU systems for extreme settings. Which counts more than three radiators, one 480mm in front, one 360mm on top, one 140mm in the back, and one 360mm in the bottom cabinet, which is ideal for liquid cooling aficionados.

What this isn’t for: You won’t get the portability of a proper slim case, it has the shrinking size of a full tower (smaller than standards), but it’s hardly portable at 12 kg (26.5 lbs). There is not a single USB type-C port for modern peripherals, and the rubber grommets are of poor quality, which becomes apparent when you use the cords.

SilverStone Grandia GD07B

SPECIFICATIONS

Slimness: 6.9 inches | Motherboard: E-ATX, ATX, Micro-ATX, Mini-ITX | Dimensions: 6.9 x 17.3 x 17.1 inches | Included Case Fans: 2x 120mm | GPU Length: Up to 13.6″ (345mm) long | CPU Cooler Height: 138mm | Liquid Cooling Support: 1x 240mm or 1x120mm |

The SilverStone Grandia GD07 is the version before (GD11B) but it comes with numerous uncommon possibilities for a full-sized HTPC system. The inside space is well-utilized to optimize storage components, with up to eleven drive bays and four 5.25″ bays included, but who needs that much storage when every game is accessible online?

The box is ideal for holding a large number of data discs for servers and personal NAS networks used to run media centers, HTPC, or rack servers. If anything, you want it to resemble rackmount PC cases and have a lock to keep it secure and kid-friendly, this is the perfect PC case.

This is the cabinet to utilize obsolete components lying around your cupboards. It has space for a total of six fans for unrestricted airflow; It counts two fans at the rear (80mm), two 120mm fans at the bottom, and two 120mm at the side, where it can fit a 240mm radiator, but using a 120mm is preferable for the layout, which is the design flaws that tend to favor air cooling.

What comes standard is a Type-C connector in the IO and a broad range of motherboard compatibility, ranging from a tiny micro ITX to an ATX, SSI-EEB, SSI-CEB, and E-ATX, and it’s doable with a net weight of 7kg, which is reasonable for its slim form factor.

Cooler Master MasterFrame 700

SPECIFICATIONS

Slimness: 12 inches | Motherboard: ATX, Micro-ATX, Mini-ITX | Dimensions: 27.64 x 12.05 x 16.14 inches | GPU Length: Up to 17.71 inches (450mm) | CPU Cooler Height: 158mm / 6.22inch | Liquid Cooling Support: 3x 360mm |

Cooler Master MasterFrame 700 is the slimmest case for extreme builds, designed specifically for gamers and overclockers, and only an expert builder can maximize its modern hardware compatibility.

This can be a liquid cooling showcase that looks as amazing as it performs, but it can also be a wall-mount gaming PC with standard components that fulfill the need and an open design that possesses a future-proof shell that can be modified to any extent in the future.

It costs $200 for an open-air case, but it can become an expensive PC when equipped with everything that comes with the acceptance of its dimensions, such as the freedom of up to three 360 water cooling radiators, unrestrictedly support up to 450mm largest size graphics card, and even fit not one but two standard ATX power supplies.

It lacks air filtration and is an open ATX PC case, making it susceptible to dust unless it is mounted to a wall in a perfectly clean environment. If you need an alternative with closed housing, check out our list of the best PC cases for watercooling.

Antec VSK2000 U3

SPECIFICATIONS

Slimness: 4 inches | Motherboard: Micro-ATX, Mini-ITX | Dimensions: 14.0 x 13.3 x 4.0 inches | GPU Length: Up to 200mm (7.8 inches) | CPU Cooler Height: Up to 65mm | Liquid Cooling Support: 96mm (645LT AIO) |

With a capacity of 10.6 liters, the Antec VSK2000 U3 is a fantastic value for money at $114, following the slim desktop profile that can be mounted horizontally or vertically with the provided brackets; it is not for fancy appearances but rather suits minimalist installations.

Antec VSK2000 U3 offers a beautiful retro vibe and a narrow chassis for a Micro-ATX build that saves space and is less bulky than the Silverstone ML04B, it fits nicely anywhere your imagination allows and can be seated directly under the TV or media cabinet, as the smallest MATX PC cases can.

For its 4-inch slimmest profile, the material quality is strong “because it has limited capacity for a large GPU and only accommodates up to 200mm of the low profile video card, it is excellent for gamers searching for an integrated GPU gaming PC case”.

Even though it has up to three tool-free storage compartments with a 5.25-inch fast-release housing for ODD/HDD. There is also a single 92mm fan at the front of the chassis incorporated for air circulation, and what is more restricted is the limitation of the PSU, which is limited to just the TFX form factor.

SilverStone RVZ03B ARGB Raven

SPECIFICATIONS

Slimness: 4.1 inches | Motherboard: Mini-ITX | PSU: Standard ATX | Dimensions: 15.04 x 13.78 x 4.13 inches | GPU Length: 330mm (13 inches) | CPU Cooler Height: 83mm | Liquid Cooling Support: 120mm (AIO) |

If you’re tired of mini plastic PC cases, the SilverStone RVZ03B ARGB Raven edition is a refreshing change. It has RGB built-in and supports full-size ATX PSUs, which is uncommon in slender computer cases and by far the best value for money at $130.

The unusual front appearance is Raven-styled, with a bright RGB light strip that is colorful and controllable. But what makes this compact chassis unusual is that it is a perfect match for a Mini-ITX motherboard with an ATX PSU, but not for an ATX mobo, which is not terrible considering the vast diversity of greater building possibilities.

We couldn’t wait for a dedicated review because this is truly a camp of its own category of ITX builds, featuring full support for large video cards up to 13 inches (330mm), removing restrictions for tiny builds and matching the sheer power package of standard ATX PSUs. It is intended for budget management by avoiding SFX, and it adds value with two included 120mm fans, which is always welcome and a plus for being the best console killer in tiny dimensions of 15.04 x 13.78 x 4.13 inches.

Have you noticed how skinny it is? It’s only 4.1 inches slim, which is ideal for slim form factor PC cases. Horizontal and vertical installation is also advantageous in terms of saving desk space and having all of the options for 14 liters of volume, which is similar to that which we listed for the best portable PC cases.

It sounds ideal to us, let’s say pristine and promising with all of the included accessories, such as magnetic dust filters, a PCI riser for larger GPUs, an RGB controller, and rubber feet to secure it in whatever orientation you choose.

In-Win ‎CE685

SPECIFICATIONS

Slimness: 6 inches | Motherboard:M-ATX, ITX | Dimensions: 18.7 x 15.7 x 6 inches | PSU: 300-watt included | GPU Length: 187mm | CPU Cooler Height: 81mm | Liquid Cooling Support: 90mm (AIO) |

To begin the introduction, In-Win CE685.FH300TB3 is a slim chassis with a volume of 11.9 L. In-Win touts the CE685 as a tool-free design for the ODD, HDD, fan bracket, and PCI slots, allowing for much easier access to the internals via a quick-release side cover, facilitating quick system assembly and maintenance.

Moving on to the interesting aspects, this chassis supports Micro ATX and Mini ITX motherboards and has a slim profile with no ventilation holes on the top, bottom, or side panels; instead, it has a unique vacuum effect with a built-in 90mm front fan and only takes air from the front to the rear.

While cooling may be lacking, the case has an ultra-slim profile that is ideal for thin-looking builds or tight spaces. This case also includes an external 5.25-inch optical drive bay and a 3.5-inch drive; however, using the hard drive bracket and the underside of the 5.25-inch bay you can install two 2.5-inch SSDs for faster data storage.

This also included a workable IO which includes five USB ports, two of which are USB 3.0 ports, and the other two are USB 2.0 ports; having no Type-C may be a disadvantage, but overall this is a great choice for small builds.

What’s more, a 300-watt PSU is included, which is a TFX power supply and works perfectly for not-so-power-hungry components; otherwise, capacity may be an issue. Overall, this is the best slim chassis for NAS for $100 and can be used in both vertical and horizontal configurations.

Silverstone Milo ML04

SPECIFICATIONS

Slimness: 4.1 inches | Motherboard: M-ATX, ITX | Dimensions: 13.78 × 17.32 × 4.14 inches | CPU Cooler Height: 70mm | Liquid Cooling Support: 90mm (AIO) |

The Silverstone Milo ML04’s unibody design isn’t a major overhaul, but it does provide some nice tuning for the low-profile HTPC; fits an M-ATX mobo, while maintaining low-profile looks, and left quite an impression on minimalists looking for a slim HTPC case to house new hardware for media libraries.

This case is ideal for any budget and costs no more than $100 with all of the improvements made over the years of release, transforming it into a stable chamber with lots of cooling and plenty of room to grow for media centers.

The sleek design will look great on your desk or in your home office, as it is one of the slimmest, measuring only 4.1 inches in thickness, making it ideal for compact setups.

The case supports four 80mm fans, none of which are included, but it allows you to install a tiny water cooling system without having to block the intake or exhaust fan.

We manage space for plenty of storage, one 5.25 optical bay in the front, and three 2.5-inch SSDs inside. And the weight is reasonable at 4kg (8.8 lbs), indeed an excellent choice for anyone looking for a feather-light case that is easily transportable.

If anything is missing is the dedicated GPU, there is no space left for one, so it is what I described as a slim ATX case with no GPU room.

In-Win CJ712

SPECIFICATIONS

Slimness: 3.7 inches | Motherboard: M-ATX, ITX | Dimensions: 12 x 3.7 x 10.9 inches | CPU Cooler Height: 45mm |

Looking for a budget-friendly slim, lightweight HTPC case? The Silverstone Milo ML04 is an excellent choice! This case measures only 12”x3.7”x10.9” and weighs only 7.4 pounds, making it ideal for compact rooms or travel.

The Milo also has strong compatibility for a normal 80 plus Flex ATX power supply, which comes included with the chassis and is 265W, so building a tiny ITX system is fine. However, this is insufficient for current 8-core CPUs, so you’ll need at least a 500W PSU to make an M-ATX build work.

The benefit of this 8-liter elegant chassis is that it can function as an SFF PC case for making a DIY network attached storage (NAS) or a DIY HTPC. But the only true drawback is the provided PSU, which is just 265W.

However, the design is flawless yet quick to assemble with a quick eject top cover, and cable management capabilities are up to you. If you’re in the market for a slim ATX mini tower and want something affordable, the Milo ML04 is a great option to consider at $90.