Fractal Design Define One Dark TG Light Tint Mid-Tower Case
Fractal Design
Fractal Design Define One Dark TG Light Tint Mid-Tower Case
The Fractal Design Define One Dark TG Light Tint Mid-Tower Case balances quiet operation with practical building and versatile component support. Its closed-front design and sound-damped panels reduce noise while three pre-installed fans and tool-less construction make setup straightforward. It suits builders who value a quieter PC without sacrificing cooling or flexibility.
Why this product
Sound dampening built in
Bitumen-lined front and side panels reduce noise while the closed-front design maintains airflow balance. Three pre-installed Momentum 14 fans provide quiet, reliable performance out of the box.
Tool-less assembly
Top panel, front panel, and side panels all access without tools. Removable fan brackets and PSU bracket speed up installation and cable management.
Room for large components
Fits graphics cards up to 368 mm, front-mounted radiators up to 360 mm, and top-mounted radiators up to 280 mm. Includes GPU support bracket and integrated air guide.
Modern I/O connectivity
20 Gbps USB Type-C port, two USB Type-A ports, and audio jack on the front panel for easy device connection.
Flexible motherboard support
Accommodates Mini ITX, Micro ATX, ATX, and E-ATX boards, plus reverse-mounted options. Seven expansion slots provide room to grow.
- ColorBlack
- Motherboard supportMini ITX, Micro ATX, ATX, E-ATX
- GPU clearanceUp to 368 mm
- CPU cooler clearanceUp to 171 mm
- Fans included3× Momentum 14
- Warranty2 years
- SKUFRA-6761
- EAN7340172713395
- Fits ATX power supplies up to 180 mm in length.
- Supports Mini ITX, Micro ATX, ATX, and E-ATX motherboards, as well as reverse-mounted variants.
- Accepts CPU coolers up to 171 mm tall.
- Mounts front radiators up to 360 mm, top radiators up to 280 mm, and rear radiators up to 120 mm.
- Holds graphics cards up to 368 mm in length with included support bracket and air guide.
Best for
- Builders prioritizing quiet operation without complex tuning.
- First-time builders who want tool-free assembly and straightforward cable routing.
- Systems with high-end components like large GPUs or AIO coolers.
- Setups using reverse-mounted or non-standard motherboard layouts.
Trade-offs
- Mini-ITX focused builds — the case is optimized for standard ATX and larger boards.
- Very compact spaces — interior volume is 56.63 L and case dimensions are 482 × 235 × 500 mm.
- Users needing front-panel RGB or extensive lighting — the design emphasizes minimal aesthetics.
- Builders requiring eight or more expansion slots — it includes seven.
Define One combines refined Scandinavian design with versatile capability. With aluminum side intake vents, three pre-installed Momentum fans, and sound-dampening bitumen, it balances airflow and noise reduction for a harmonious experience.
Quieter by design
Enjoy a more harmonious gaming experience with a closed-front design and bitumen-lined front and side panels for sound dampening.
Smooth building
Enjoy a smooth and intuitive build experience with tool-less access and removable top and front fan brackets for easier installation.
Powerful fans included
Keep your system running smoothly with three pre-installed LCP-blade Momentum 14 fans offering powerful out-of-the-box airflow.
Designed for versatility
Crafted for work and play with space for graphics cards up to 368 mm in length with an integrated GPU air guide and support bracket.
Accessible I/O
Connect your devices effortlessly with an I/O featuring a 20 Gbps USB Type-C port, two USB Type-A ports, and a combined audio jack.
Case
| Brand | Fractal Design |
|---|---|
| Type | Mid Tower |
| Color | Black |
| Left side panel | Tempered glass |
| Right side panel | Industrial sound-damped steel |
| Front panel | Industrial steel |
| Dimensions (L × W × H) | 482 × 235 × 500 mm |
| Volume | 56.63 L |
| Net weight | 11.1 kg |
Component Compatibility
| Motherboard support | Mini ITX, Micro ATX, ATX, E-ATX, Reverse Micro ATX, Reverse ATX |
|---|---|
| PSU compatibility | ATX, up to 180 mm length |
| GPU max length | 368 mm |
| CPU cooler max height | 171 mm |
| Expansion slots | 7 |
| 2.5" drive mounts | 2 dedicated |
| 3.5"/2.5" drive mounts | 2 combined |
Cooling & Airflow
| Fans included | 3× Momentum 14 (front) |
|---|---|
| Front fan mounts | 3× 120 mm or 3× 140 mm |
| Top fan mounts | 2× 120 mm or 2× 140 mm |
| Rear fan mounts | 1× 120 mm |
| Front radiator compatibility | 120, 240, 280, 360 mm |
| Top radiator compatibility | 120, 240, 280 mm |
| Rear radiator compatibility | 120 mm |
Connectivity & Storage
| USB Type-C | 1× 20 Gbps |
|---|---|
| USB Type-A | 2× 5 Gbps |
| Audio | 1× combined 3.5 mm jack |
| Dust filters | Front, PSU |
| Cable routing space | 37 mm |
| Tool-less access | Top panel, front panel, side panels, PSU bracket, PCI blanks, PSU filter |
Warranty
| Warranty period | 2 years |
|---|
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.