Designed from the ground up, the Define R6 goes beyond iteration with a profound stride of innovation – the latest and largest step in the legacy of the world-renowned Define Series.
Seamless tempered glass and sound dampened steel panels with an elegant push-to-lock latching mechanism encase an entirely redesigned interior with unprecedented component support and storage flexibility. Six 3.5”/2.5” drives and two 2.5” drives can be installed with precision placement in countless configurations throughout the case.
The spacious and fully adaptable framework of the Define R6 sports nine fan mounts, integrated PWM fan hub and support for radiators up to 420mm, making it the perfect platform for building your dream water loop. Improved third generation ModuVent™ technology allows an effortless transition from steel-clad sound dampened top panel to filtered high airflow multi-fan ventilation setup.
Expanding on the timeless elegant form and silent modular function that brought so much success to its predecessors, the new Define R6 offers the most demanding hardware enthusiast a solid foundation and flexible framework with limitless potential.
Full-size seamless scratch-resistant tempered glass side panel
Optimized for silence with high-density industrial dampening on side, top and front panels
Reversible front door with anodized aluminum cover and dual mounting system for adaptability with elegance
Nine fan positions with intuitive layout and clear airflow paths offer massive cooling capacity
Nexus+ Smart Hub offers superior fan control of six additional case fans and three extra PWM devices via your motherboard
Three silent, airflow-optimized Fractal Design Dynamic X2 GP-14 140 mm fans come pre-installed helping ensure superior airflow via two intake fans and a single exhaust.
Extensive water cooling support with room for up to a 420 mm radiator in the top, 360 mm in the front, and up to 280 mm in the base
Power supply shroud and Modular Storage Plate conceal HDD trays and excess cabling for a clean, clutter-free interior
Third generation ModuVent™ technology gives users the choice between a soundproof steel cover or filtered multi-fan ventilation setup in the top panel
Easy-to-clean high airflow nylon filters on the front, top, and base with full PSU coverage and front access for convenience
Modular Storage Plate lets users easily convert between the Standard Layout for maximum storage capacity or the new Open Layout for superior water cooling support and clear air flow paths
Vertical 2.5 slot GPU mount, compatible with the Fractal Design Flex VRC-25 PCIE x16 Vertical GPU Riser Kit, showcases your graphics hardware with full visibility and secure fastening (sold separately)
Highly modular interior includes six universal SSD/HDD trays that can be independently repositioned to suit components, cooling, and cable routing
Customizable 2.5” storage solution consists of two brackets and a choice of four tray locations to keep drives hidden behind the motherboard tray or display them prominently on top of the PSU shroud
Compatible with Fractal Design Connect D1 USB 3.1 Gen 2 Type-C Upgrade Kit for ultra-fast file transfers and fast charging (sold separately, requires a compatible motherboard)
3.5"/2.5" Universal drive brackets
Dedicated 2.5" drive brackets
Dedicated 5.25" drive brackets
7 + 2 vertical
eATX (up to 285mm wide), ATX, mATX, ITX
Power supply type
2 x USB 3.0, 2 x USB 2.0
Total fan mounts
3 x 120 mm or 2 x 140 mm, 2 x Dynamic X2 GP-14 included
Standard layout: 3 x 120 or 2 x 140
Open layout: 3 x 120/140 mm
1 x 120/140 mm 1 x Dynamic X2 GP-14 included
2 x 120/140 mm
Bottom fan + PSU Front fans Top panel
120/240/360 mm 140/280 mm
Standard layout: - 120/240/360 mm (max 35 mm motherboard component height)
Open layout: - 120/240/360 mm - 140/280/420 mm (max 35 mm motherboard component height)
120/240 mm 140/280 mm
PSU max length
GPU max length
Max 440mm with front fan mounted
Standard layout: Maximum width 155 mm (including power connectors) for graphics cards longer than 300mm.