Quiet PC Case: Best Whisper-Silent Chassis on the Market

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Best Whisper Silent Chassis
Best Whisper Silent Chassis

Many people think that buying a low-profile graphics card or silent case fans will immediately solve the problem of a noisy computer, only to be disappointed by persistent whirring. While these peripherals indeed help reduce noise, other factors are often overlooked, and one of them is the case itself.

In this guide, we go over ten of the best quiet PC cases available today. Whether you’re looking to build a rig from scratch or replace your loud chassis, this list will surely help you out. 

We also included a comprehensive guide towards the end of this article to give you an idea of what you should consider before buying a silent chassis.

Fractal Design Define 7

Fractal Design Define 7

Form Factor Mid-Tower ATX
Motherboard Compatibility Mini-ITX
Micro-ATX
ATX
E-ATX
Front USB Ports 1 x USB 3.1 Gen 2 Type-C
4 x USB 3.0 Type-A
Fan Mounts 3 x 120mm Front
1 x 120mm Rear
3 x 120mm Top
2 x 120mm Bottom
Maximum CPU Cooler Height 185mm
Maximum GPU Length 467mm
Weight 35 lbs
Pros
  • Versatile dual-layout design
  • Excellent acoustic performance
  • Tempered-glass side panel
  • Water cooling support
  • USB 3.1 Gen 2 Type-C
Cons
  • No lighting

The Fractal Design Define 7 is an extremely versatile case that is appealing to gamers and enthusiasts alike. It is a feature-packed chassis with an excellent thermal and acoustic performance. 

One of the most remarkable elements of the Design Define 7 is its dual-layout interior design. The “open” layout resembles what you would expect from a contemporary mid-tower case: an open chamber with your standard storage drive mounts tucked neatly behind the motherboard tray. On the other hand, the “storage” layout lets you add up to 14 hard drives by installing the included trays in the accessory box. 

The Design Define 7 has a large plastic door with a thinly brushed aluminum insert and reversible swing lined sound dampening material. Its tempered-glass side panel is directly attached to a metal frame, eliminating the need for rubber-coated pins or hinges commonly found in modern cases. Instead, the panel is held firmly in place by a reliable push-to-lock latching mechanism.

In terms of thermal performance, the Design Define 7 can hold up to nine 120mm fans. It is also equipped with a dedicated fan filtration system. Large removable nylon filters can be found on each fan mount location, including the power supply.

All in all, the Design Define 7 is an excellent choice if you want one of the best quiet pc case. However, you may want to look elsewhere if you want a case with flashy lighting effects. 

Corsair Carbide Series 275Q

Corsair Carbide Series 275q

Form Factor Mid-Tower ATX
Motherboard Compatibility Mini-ITX
Micro-ATX
ATX
Front USB Ports 2 x USB 3.0 Type-A
Fan Mounts 3 x 120mm Front
1 x 120mm Rear
2 x 120mm Top
Maximum CPU Cooler Height 170mm
Maximum GPU Length 370mm
Weight 13 lbs
Pros
  • Sleek and elegant design
  • Excellent acoustic performance
  • Good airflow
  • Lightweight

Cons
  • Steel opaque side panel

The Corsair Carbide Series 275Q is a silent case that is targeted towards the budget segment of the market. It comes with noise-absorbing foam lined along the inner walls of its side panels to dampen the sound produced by your peripherals.

The Carbide Series 275Q has curved edges to give it an elegant appeal. However, both if its side panels are made of steel, so you won’t be able to show off any of your peripherals with this chassis. 

Airflow is a significant upside for the Carbide Series 275Q as it can support up to six 120mm fans and multiple radiators if up to 360mm. It also comes with two 120mm fans out of the box with a 1300 maximum RPM. Additionally, it has an intuitive cable routing and storage system, in which the solid state drive bays are conveniently located behind the motherboard.

Overall, you can count on the Carbide Series 275Q to keep your system quiet at a very affordable price. If you’re turned off by minimalist design and steel side panel, you may want to check out the other options on this list. 

Cooler Master Silencio S400

Cooler Master Silencio S400

Form Factor Mid-Tower ATX
Motherboard Compatibility Mini-ITX
Micro-ATX
Front USB Ports 2 x USB 3.0 Type-A
Fan Mounts 2 x 120mm Front
1 x 120mm Rear
2 x 120mm Top
Maximum CPU Cooler Height 167mm
Maximum GPU Length 319mm
Weight 16 lbs
Pros
  • Whisper-quiet operation
  • Elegant design
  • Optical drive bay

Cons
  • No USB Type-C support

The Cooler Master Silencio S400 flaunts its dedication to silence by placing sound dampening material on all of its panels. This case is more suited for enthusiasts who would rather have a quiet computing experience than flashy lighting. 

The Silencio S400 comes with a large reversible swing door that’s lined with a layer of sound-dampening material. Surprisingly, there is an optical drive bay behind the door, a feature rarely integrated into other modern chassis.

While the front panel of the Silencio S400 is solid, there is a significant gap on both sides that allows for the intake of cool air. You can install up to five 120mm fans in this case: two in front, two in the top panel, and one on the rear. However, it should be noted that the optical drive bay must be removed if you want to install two fans in the top panel.

If you want whisper-quiet computing, the Silencio S400 won’t disappoint. 

Corsair Carbide Series 678C

Corsair Carbide Series 678c

Form Factor Mid-Tower ATX
Motherboard Compatibility Mini-ITX
Micro-ATX
ATX
Front USB Ports 1 x USB 3.1 Type-C
2 x USB 3.0 Type-A
Fan Mounts 3 x 120mm Front
1 x 120mm Rear
3 x 120mm Top
2 x 120mm Bottom
Maximum CPU Cooler Height 170mm
Maximum GPU Length 370mm
Weight 29 lbs
Pros
  • Whisper-quiet performance
  • Tempered-glass side panel
  • Decent thermals
  • USB 3.1 Type-C support
  • Excellent filtration system

Cons
  • Limited space behind the motherboard tray

If style and silence are high on your priorities list, the Corsair Carbide Series 678C is a suitable chassis. This case manages to strike a balance between acoustic and thermal performance, making it an ideal frame for powerful gaming rigs. 

The Carbide Series 678C comes with a sound-dampening vent cover and a magnetic mesh filter, allowing you to switch one for the other to prioritize either silence or airflow. Its front panel has a USB 3.1 Type-C and two USB 3.0 Type-A ports to give you rich connectivity options. 

The front of the case has a large plastic door with a brushed aluminum insert and a layer of sound-dampening material. An optical drive bay can be found behind the door, a rare but welcome addition nowadays. A mesh filter covering the mounting locations for case fans can also be found behind the plastic door. 

One of the most outstanding features of the Carbide Series 678C is the integration of a tempered-glass side panel. It is hinged in the rear and uses a magnetic latching system to grant easy access to your peripherals. The panel has a dark tint that is still transparent enough to show your hardware, especially if you employ some lighting. Meanwhile, the opaque steel panel on the opposite side is cushioned with high-density EVA foam to dampen sound even further.

Overall, the Carbide Series 678C is an excellent case with remarkable aesthetics and sound-dampening capabilities.

be quiet! Dark Base Pro 900 Rev. 2

Be Quiet! Dark Base Pro 900 Rev. 2

Form Factor Full-Tower
Motherboard Compatibility Mini-ITX
Micro-ATX
ATX
E-ATX
XL-ATX
Front USB Ports 1 x Qi Wireless Charger
1 x USB 3.1 Gen 2 Type-C
1 x USB Quick Charge
2 x USB 3.0 Type-A
Fan Mounts 4 x 120mm Front
1 x 120mm Rear
4 x 120mm Top
2 x 120mm Bottom
Maximum CPU Cooler Height 185mm
Maximum GPU Length 472mm
Weight 32 lbs
Pros
  • Modular design
  • Rich connectivity options
  • Integrated Qi wireless charger
  • Unmatched versatility
Cons
  • Heavy

Developed by a company dedicated to creating silent peripherals, the be quiet! Dark Base Pro 900 Rev. 2 is designed for enthusiasts who favor modularity and adjustability. With dual slots for either card readers or optical drives and an included fan bracket, this case can make your rig exactly how you want it.

The Dark Base Pro 900 Rev. 2 comes with three pre-installed case fans, including two 140mm Silent Wings 3 at the front and a single exhaust fan on the rear. The front of the chassis can support up to four 120mm fans while the button can hold up to two 120mm or 140mm fans. Moreover, there is no shortage of room for radiators, as it can support multiple sizes of up to a massive 420mm.

In terms of connectivity options, the Dark Base Pro 900 Rev. 2 stands out on this list as it is the only case with an integrated Qi wireless charger. Additionally, it has a USB 3.1 Gen 2 Type-C and two USB 3.0 Type-A ports.

If you want a full-sized chassis that offers unmatched customizability, the Dark Base Pro 900 Rev. 2 is an excellent option.

Fractal Design Define R6

Fractal Design Define R6​

Form Factor Mid-Tower ATX
Motherboard Compatibility Mini-ITX
Micro-ATX
ATX
E-ATX
Front USB Ports 2 x USB 3.0 Type-A
2 x USB 2.0 Type-A
Fan Mounts 3 x 120mm Front
1 x 120mm Rear
3 x 120mm Top
2 x 120mm Bottom
Maximum CPU Cooler Height 185mm
Maximum GPU Length 440mm
Weight 27 lbs
Pros
  • Tempered-glass side panel
  • Excellent filtration system
  • Good acoustic performance
  • Water cooling support
  • Versatile design
Cons
  • Mediocre thermal performance

The Fractal Design Define R6 is a well-rounded case with remarkable versatility and features that justify the price. It is compatible with virtually every commercial motherboard on the market, making it ideal for any build.

The Design Define R6 has a top that is covered with a sound-dampening cover vent. Directly below the cover vent is a plastic mesh fan filter to provide adequate airflow while keeping your hardware dust-free. 

Connectivity-wise, the Design Define R6 doesn’t offer the most updated ports, but the two USB 3.0 and two USB 2.0 ports at the front edge of the panel should suffice for average users. The front of the chassis has a large plastic door with an aluminum insert and reversible swing. It is lined with a thick layer of sound-dampening material to make your rig operate as silently as possible. The front panel is lined with vertical vents on either side for the intake of cool air. 

If you like to show off your hardware, you will appreciate the tempered-glass side panel of the Design Define R6. The panel is attached to a metal frame, eliminating the need for rubber-coated pins or hinges. Instead, it is secured by a push-to-lock mechanism. You can also install the included thumbscrews to help keep it in place. On the opposite side, the opaque steel panel has another layer of sound-dampening material, held in place by a couple of thumbscrews.

All in all, the Design Define R6 is an ideal case for virtually any type of build. 

be quiet! Silent Base 801

Be Quiet! Silent Base 801

Form Factor Mid-Tower ATX
Motherboard Compatibility Mini-ITX
Micro-ATX
ATX
E-ATX
Front USB Ports 2 x USB 3.0 Type-A
1 x USB 2.0 Type-A
Fan Mounts 3 x 120mm Front
1 x 120mm Rear
3 x 120mm Top
Maximum CPU Cooler Height 185mm
Maximum GPU Length 449mm
Weight 23 lbs
Pros
  • Good airflow
  • Excellent acoustic performance
  • Tempered-glass side panel
  • Pre-installed Pure Wings 2 fans
  • Water cooling support
Cons
  • Lackluster connectivity options

The be quiet! Silent Base 801 is an excellent mid-tower chassis that provides proper ventilation and remarkable sound insulation. It comes with a tempered-glass side panel, allowing you to show the interior with all your components without compromising silence. 

The Silent Base 801 has a solid front panel with an opening on each side through which the pre-installed Pure Wings 2 case fans can draw fresh air. There are angled channels behind the ventilation openings meant to prevent noise from penetrating to the outside. 

In terms of connectivity, the Silent Base 801 has relatively limited options, including a couple of USB 3.0 Type-A ports and a single USB 2.0 Type-A port. The right side panel of the case is made of opaque steel and is equipped with a thick insulating map for sound dampening. 

One unique feature about the Silent Base 801 is the locking mechanism that holds the tempered-glass side panel. The case comes with special buttons that release the side panel’s lugs when pressed, allowing you to remove the panel. 

The Silent Base 801 has a very open-room interior with plenty of space for triple-fan graphics cards and large coolers. The pre-installed Pure Wings 2 fans are connected to a PWM-capable control board. If you want to employ water-cooling, this case can also support various radiator sizes of up to 420mm.

be quiet! Silent Base 601 Window

Be Quiet! Silent Base 601 Window

Form Factor Mid-Tower ATX
Motherboard Compatibility Mini-ITX
Micro-ATX
ATX
E-ATX
Front USB Ports 2 x USB 3.0 Type-A
1 x USB 2.0 Type-A
Fan Mounts 3 x 120mm Front
1 x 120mm Rear
3 x 120mm Top
Maximum CPU Cooler Height 185mm
Maximum GPU Length 449mm
Weight 23 lbs
Pros
  • Good acoustic performance
  • Great filtration system
  • Robust build quality
  • Enough room for long graphics cards and large coolers
Cons
  • Mediocre thermal performance under load
  • Lackluster connectivity options

The be quiet! Silent Base 601 Window is a sleek chassis that places heavy emphasis on quiet operation. Although this case features a subdued appeal, it has a tempered-glass side panel that lets you show off your components while maintaining acoustic performance. 

The Silent Base 601 Window has a large plastic lift-off front panel with a layer of aluminum. The opposite side of the panel is lined with a thick layer of sound-dampening material. There are vertical vents on either side of the panel to allow the intake fans to draw in cool air. 

On top of the case, there are connectivity options, including two USB 3.0 Type-A ports and a single USB 2.0 Type-A port. While it doesn’t support USB Type-C, these ports should suffice for most of your needs. 

Both side panels of the Silent Base 601 Window feature a push-button quick-release mechanism that gives you easy access to the inside of the chassis. Once the button has been pressed, all you have to do is lift the panel. Moreover, the panel opposite the tempered glass is lined with the same sound-dampening material found in the front panel for noise insulation. 

The Silent Base 601 Window comes with a single Pure Wings 2 intake fan pre-installed. You can adjust the fans’ speed via the control switch in front of the chassis, allowing you to change the fan speed from 500-1000 RPM. If you prefer liquid cooling, this case can also support radiators of up to 360mm, which can be installed in the top or front mounting locations of the chassis.

Phanteks Eclipse P400S

Phanteks Eclipse P400s

Form Factor Mid-Tower ATX
Motherboard Compatibility Mini-ITX
Micro-ATX
ATX
Front USB Ports 2 x USB 3.0 Type-A
Fan Mounts 3 x 120mm Front
1 x 120mm Rear
2 x 120mm Top
Maximum CPU Cooler Height 160mm
Maximum GPU Length 395mm
Weight 15 lbs
Pros
  • Budget-friendly
  • Water cooling support
  • Enough room for long graphics cards and large coolers
  • RGB light strip
Cons
  • Lackluster connectivity options

The Phanteks Eclipse P400S is a budget-oriented case with plenty of sound-dampening properties. It is also packed with other useful features, including water cooling support and plenty of room for long graphics cards and large coolers.

The front panel of the Eclipse P400S can easily be removed by pulling it from the bottom. Once removed, the sound-dampening material behind the panel is exposed. There are vents at the top and bottom of the panel to allow the intake fans to draw in fresh air.

One of the features that make the Eclipse P400S stand out in this list is the inclusion of an RGB light trip in the chassis. The strip is compatible with lighting control modules and software that come with supported motherboards. 

Connectivity is arguably the most significant drawback of the Eclipse P400S as it only has two USB 3.0 Type-A ports on top of the case. On the upside, there are two buttons located under the top edge of the case that control the fan speed and strip lighting.

The top of the chassis has two sound dampening plates that are held on by magnets. If you want to install a fan in the top mount of the case, you can remove one plate and still maintain some sound-dampening qualities. You can install up to six case fans for better airflow while compromising silence. 

Thermaltake Suppressor F31

Thermaltake Suppressor F31

Form Factor Mid-Tower ATX
Motherboard Compatibility Mini-ITX
Micro-ATX
ATX
Front USB Ports 2 x USB 3.0 Type-A
2 x USB 2.0 Type-A
Fan Mounts 2 x 120mm Front
1 x 120mm Rear
3 x 120mm Top
2 x 120mm Bottom
Maximum CPU Cooler Height 180mm
Maximum GPU Length 420mm
Weight 23 lbs
Pros
  • Remarkable acoustic performance
  • Excellent filtration system
  • Easy cable management
Cons
  • Poor airflow

The Thermaltake Suppressor F31 is a chassis designed to suppress as much noise as possible. This case places so much emphasis on its sound-dampening capabilities at the expense of airflow as its front panel only has one side vent. 

Like most other options on this list, the Suppressor F31 has a plastic door for a front panel, which, when opened, exposes a thick layer of sound-absorbing material. It also reveals two removable drive bays that you can use to install optical drives.

The Suppressor F31 has plenty of magnetic dust filters throughout the chassis for convenient cleaning. The side panels of this case, along with the top fan mounting locations, are layered with sound-absorbing material to deaden the noise considerably. 

With plenty of routing options, tie points, grommets, and room behind the motherboard tray, cable management becomes less of a chore with the Suppressor F31. It also has a total of eight fan mounting locations to compensate for the lack of ventilation. 

Overall, the Suppressor F31 is suitable for enthusiasts who are willing to compromise on airflow for sound-dampening capabilities. You can also employ water cooling to improve temperature performance considerably.

How to Build the Ultimate Quiet PC


The case is only one component of a computer, and if you want to build a rig that operates as quiet as a whisper, there are several other aspects you need to consider.

Form Factor

When choosing a chassis, the form factor should be one of the first things to consider. There are generally three types of cases:

  • Full-tower cases are large and can handle virtually anything you throw at them – including XL-ATX motherboards and multiple CPU configurations. 
  • Mid-tower cases are usually compatible with up to E-ATX motherboards and have enough room for all your components and storage devices. They are the most popular among consumers, excluding power users. 
  • Mini-tower cases are compact and portable chassis that support small Mini-ITX motherboards. They aren’t ideal for quiet builds as they have limited cooling capabilities.

Cooling Capabilities

Your case of choice should have enough mounting positions for either fans or radiators. The choice between air-cooling or water-cooling is a matter of personal preference, but make sure to choose components with minimal noise. 

Generally, water-cooled rigs tend to be louder, especially when under heavy load, due to the water pump and radiator fans working non-stop. Alternatively, you can go for large and overpowered air coolers that deliver remarkable cooling and acoustic performance.

Another important consideration when choosing a case is its airflow. Make sure the chassis has enough vents for the intake and outtake of air. A high-airflow case with adequate noise insulation paired with silent fans can make for the ultimate quiet build.

Storage Drives

If you want your rig to operate whisper-quiet, avoid hard disk drives at all costs. These devices have moving parts that can turn noticeably loud when they start spinning. On the contrary, solid state drives are not only much more silent, but they are also significantly faster. 

Quick Recap

  1. Fractal Design Define 7
  2. Corsair Carbide Series 275Q
  3. Cooler Master Silencio S400
  4. Corsair Carbide Series 678C
  5. be quiet! Dark Base Pro 900
  6. Fractal Design Define R6
  7. be quiet! Silent Base 801
  8. be quiet! Silent Base 601 Window
  9. Phanteks Eclipse P400S 
  10. Thermaltake Suppressor F31

Final Words

That concludes our roundup of the ten quietest chassis on the market. We hope this comprehensive guide has helped shape your decision in buying the most suitable case for your needs. 

I am a gaming enthusiast with an unquenchable thirst for knowledge in the world of technology. In addition to being a resident contributor to this website, I am currently pursuing a degree in political science while flipping gaming systems on the side.

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