Fractal Design
Fractal Design Define R5 BKout Edition Window BK
Best mid-tower case for builders prioritizing silent operation and storage capacity.
The Fractal Design Define R5 BKout Edition is an ATX mid-tower computer case engineered for silent operation and superior cooling. It features high-density noise-reducing material and the innovative ModuVent™ design for customizable airflow and silence. The case boasts a Scandinavian-inspired aesthetic with a sleek black finish and sound-dampened steel side panels. Its configurable interior supports extensive storage, including up to 8x 3.5" HDDs and 2x 2.5" SSDs, and offers ample space for water cooling components. With tool-free drive mounts and easy-access dust filters, building and maintaining your system is straightforward.
$134.99
More Define Options
Owner Satisfaction
4.6
/ 5
Category Rank
60
/ 898
#60 in Desktop Computer Cases
Price vs Category Average
-79%
Below average
Case Type
Mid Tower
/ Mid Tower
Who it's for
- Minimalists preferring a sleek, understated professional aesthetic
- Quiet-office workers needing a silent computing environment
- Custom builders requiring flexible storage and cooling layouts
Who should skip it
- Performance gamers prioritizing maximum airflow for high-end components
- Modern users requiring fast USB-C connectivity for peripherals
- Frequent travelers needing a portable or lightweight chassis
Performance breakdown
Acoustic Dampening
High-density materials effectively silence internal component noise for a whisper-quiet experience.
Storage Versatility
Massive drive capacity easily accommodates extensive multi-disk storage configurations.
Cooling Flexibility
ModuVent design allows for seamless transitions between silent and high-airflow setups.
Build Accessibility
Tool-free mounts and intuitive layout make system assembly remarkably straightforward.
Cable Management
Thoughtful routing options ensure a clean interior and unobstructed airflow paths.
Maintenance Ease
Quick-access dust filters simplify routine cleaning to keep internals pristine.
Key Specs
Case Type
Mid Tower
Motherboard Compatibility
ATX, Micro ATX, Mini ITX
Drive Bays
Up to 8x 3.5" HDDs and 2x 2.5" SSDs
Main Chassis Material
Steel
Side Panel Type
Solid Panel
Radiator Support Size
120mm, 140mm, 240mm, 280mm, 360mm, 420mm
Dust Filters Included
True
Max GPU Length
0.0 mm
Features
- Exceptional sound dampening for quiet operation
- Configurable interior for storage and cooling
- Support for extensive air and liquid cooling
- Tool-free SSD mounting for easy installation
- Quick-release side panel access
- Dual-sided front door mounting
- Easy-to-clean dust filters
- Clean build with superior cable management
What customers say
This case is highly regarded as a benchmark for quiet PC building. Users consistently celebrate its exceptional noise dampening, which creates a remarkably silent computing experience. The build quality is frequently noted as robust and premium, reflecting durable construction. Builders value the highly modular interior, appreciating the flexible storage and intuitive cable management that simplify assembly. Aesthetically, the clean, minimalist design is a major draw. While its focus on silence means airflow prioritizes quiet operation over extreme cooling, the overall sentiment confirms this product delivers a high quality, feature rich, and exceptionally quiet platform, making it a top recommendation for silence enthusiasts.
Know before you buy
The case is specifically engineered for silence, utilizing high-density noise-dampening material on the side panels and front door. Combined with the ModuVent design, it effectively absorbs internal component noise while allowing you to prioritize airflow when needed.
Yes, the Define R5 is highly versatile for liquid cooling. It supports a wide range of radiator sizes, including up to 420mm, depending on your specific configuration of drive cages and fans.
Not at all. The case includes easy-to-access dust filters that are designed for quick removal and cleaning, helping you maintain optimal airflow and keep your components free of debris over time.
The interior is very spacious for a mid-tower, supporting up to eight 3.5-inch HDDs and two dedicated 2.5-inch SSD mounts. This makes it an excellent choice for users building a home server or a workstation with extensive storage requirements.
No, the front door features a dual-sided mounting design. This allows you to choose whether the door opens from the left or the right, providing flexibility based on where you plan to place the case on your desk or floor.
Yes, the Define R5 is fully compatible with ATX, Micro ATX, and Mini ITX motherboards. Its internal layout is designed to accommodate standard ATX builds while still leaving plenty of room for cable management.
Still have a question?
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