- Brand: Sonnet
- Model: eGPU Breakaway Box 850 T5
Interface: Thunderbolt 5 eGPU expansion enclosure
Data Transfer Speed: Up to 80 Gbps bi-directional bandwidth
Supported GPU Types: NVIDIA GeForce RTX 50 / 40 / 30 Series and AMD Radeon RX 9000 / 7000 / 6000 Series
Supported GPU Size: Triple-wide graphics cards up to 345 × 155 × 70 mm
Power Supply: Built-in 850W universal power supply with 100W laptop charging support
Additional Connectivity: Thunderbolt 5 peripheral port, 3 × USB 3.2 Gen 2 Type-A ports and 5Gb Ethernet port
Interface: Thunderbolt 5 eGPU expansion enclosure
Data Transfer Speed: Up to 80 Gbps bi-directional bandwidth
Supported GPU Types: NVIDIA GeForce RTX 50 / 40 / 30 Series and AMD Radeon RX 9000 / 7000 / 6000 Series
Supported GPU Size: Triple-wide graphics cards up to 345 × 155 × 70 mm
Power Supply: Built-in 850W universal power supply with 100W laptop charging support
Additional Connectivity: Thunderbolt 5 peripheral port, 3 × USB 3.2 Gen 2 Type-A ports and 5Gb Ethernet port
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Thunderbolt 5 eGPU Expansion System
Sonnet eGPU Breakaway Box 850 T5
Brawn Meets Brains. Graphics. AI. Gaming.
Breakaway Box 850 T5 brings desktop-class GPU power to compatible Windows 11 laptops and small form factor computers through a single Thunderbolt 5 connection. Install the GPU of your choice and unlock faster rendering, smoother 4K gaming, accelerated AI workflows, high-speed wired networking, and expanded peripheral connectivity from one professional external GPU system.
Thunderbolt 5Next-generation eGPU connection
80GbpsBi-directional bandwidth
PCIe 4.0High-speed GPU bandwidth
850WRobust universal power supply
Triple-wideGPU card support
RTX / RadeonModern NVIDIA and AMD GPUs
100WLaptop charging via host port
5GbEFast RJ45 wired networking
3 x USB-AUSB 3.2 Gen 2, 10Gbps
TB5 DockAdditional Thunderbolt peripheral port
Quiet CoolingLarge variable-speed fan
2-YearProduct warranty
Work Faster. Game Harder.
Designed for video editors, AI developers, medical imaging professionals, gamers, engineers, and creators, Breakaway Box 850 T5 lets you add serious GPU horsepower only when you need it. It helps transform a thin Windows laptop or compact desktop into a powerful workstation without locking you into a fixed internal graphics configuration.
Desktop-Class Graphics. Thunderbolt 5 Fast.
Breakaway Box 850 T5 is ideal for Thunderbolt 5 Windows computers and also works with Thunderbolt 4 and GPU-compatible USB4 Windows 11 systems. Thunderbolt 5 provides up to 80Gbps bi-directional data and PCIe 4.0 bandwidth, while Thunderbolt 4 and compatible USB4 systems can operate at 40Gbps bi-directional data with PCIe 3.0 bandwidth.
Thunderbolt 5 Windows Computers
Best suited for the highest available eGPU bandwidth, modern GPU acceleration, workstation workflows, AI tools, and high-refresh gaming setups.
Thunderbolt 4 / USB4 Windows Computers
Also supports Thunderbolt 4 and most GPU-compatible USB4 Windows 11 systems, making it a strong upgrade path for current and future devices.
Transform Your Laptop Into a Near-Desktop Graphics Workstation
Creative applications such as video editing, rendering, color grading, 3D animation, visual effects, and GPU compute can be limited by integrated or low-power mobile graphics. Connect Breakaway Box 850 T5, install a compatible high-performance GPU, and give your Windows laptop the acceleration needed for demanding professional production workflows.
Video Editing
Accelerate timelines, effects, rendering, color grading, and export workflows in GPU-powered creative applications.
3D / VFX
Add workstation-class GPU resources for modelling, animation, simulation previews, and visual effects workloads.
Medical Imaging
Use powerful GPU processing for high-resolution visualization and demanding imaging workflows on compatible systems.
Local AI for Faster Processing and Enhanced Privacy
Pairing a compatible high-end GPU with Breakaway Box 850 T5 can dramatically improve local AI workflows. Run LLM tools, image generation, speech enhancement, and audio processing locally without depending on cloud subscriptions or sending sensitive data online.
LLM Libraries
Run local LLM applications such as LM Studio, Ollama, and GPT4ALL with the GPU resources needed for faster responses.
AI Graphics
Edit and generate images using GPU-accelerated tools such as Stable Diffusion and Flux.1 on compatible Windows systems.
AI Audio
Accelerate text-to-speech, noise reduction, audio repair, and music generation workflows with local processing.
Graphic-Intensive Gaming
Breakaway Box 850 T5 lets you enjoy high-performance gaming without carrying a bulky gaming laptop. Connect your enclosure with a compatible graphics card installed, output enhanced graphics to an external monitor, and upgrade the GPU later as new generations arrive.
Upgrade Integrated Graphics
Add serious GPU power to compatible Windows laptops and compact computers that rely on integrated or lower-power mobile graphics.
Multi-Monitor Gaming
Use the installed GPU outputs for immersive external display setups and expansive multi-monitor productivity or gaming stations.
Broad GPU Card Compatibility with Power to Spare
Built for power-hungry triple-width graphics cards, Breakaway Box 850 T5 supports modern Thunderbolt-compatible GPUs including NVIDIA GeForce RTX 50, 40, and 30 Series, plus AMD Radeon RX 9000, 7000, and 6000 Series cards. The 850W power supply and modern power connectors help the enclosure handle today's high-performance GPUs and future upgrades.
Card Size
Supports triple-wide GPU cards up to 345 x 155 x 70 mm.
GPU Power
Supports three 8-pin connectors or one 16-pin 12VHPWR connector.
NVIDIA GPUs
Compatible with GeForce RTX 50, 40, or 30 Series cards.
AMD GPUs
Compatible with Radeon RX 9000, 7000, or 6000 Series cards.
More Power. More Ports.
The built-in Thunderbolt 5 dock turns one computer connection into a complete desk setup. Alongside the GPU, Breakaway Box 850 T5 provides one Thunderbolt 5 peripheral port, three USB 3.2 Gen 2 Type-A ports, and a 5 Gigabit Ethernet port for fast wired networking using Cat 5e or better cabling.
Thunderbolt Peripheral Port
Connect an additional Thunderbolt 5, 4, or 3 peripheral, or a USB-C device, with up to 15W power.
5 Gigabit Ethernet
RJ45 networking supports 5Gbps, 2.5Gbps, 1Gbps, and 100Mbps link speeds.
3 x 10Gbps USB-A
USB 3.2 Gen 2 ports support fast NVMe SSDs, USB peripherals, keyboards, mice, and headsets.
Cool and Quiet
A large built-in, variable-speed, temperature-controlled fan quietly and effectively cools the installed card. This makes Breakaway Box 850 T5 suitable for studios, desks, editing bays, and noise-sensitive professional environments where cooling performance and acoustic comfort both matter.
Thunderbolt 5 Performance Path
Thunderbolt 5 doubles the available bi-directional data speed compared with Thunderbolt 4, helping modern GPUs work more effectively outside the computer. The enclosure also remains useful with Thunderbolt 4 and GPU-compatible USB4 Windows 11 systems for a flexible upgrade path.
| Connection Type | Data Capability | PCIe Bandwidth Class | Best Use Case |
|---|---|---|---|
| Thunderbolt 5 | 80Gbps bi-directional data | PCIe 4.0 bandwidth | Highest-performance eGPU, AI, rendering, and gaming workflows |
| Thunderbolt 4 | 40Gbps bi-directional data | PCIe 3.0 bandwidth | Strong compatibility with current Windows 11 laptops |
| GPU-compatible USB4 | 40Gbps bi-directional data | PCIe 3.0 bandwidth | Supported USB4 Windows systems where eGPU support is enabled by the manufacturer |
Technical Specifications
Key hardware and compatibility details for Sonnet eGPU Breakaway Box 850 T5.
| Specification | Details |
|---|---|
| Part Number | GPU-850T5 |
| Product Type | Desktop external GPU system / Thunderbolt 5 eGPU enclosure with built-in dock |
| Operating System | Windows 11 2024H2 or newer |
| Computer Compatibility | Windows computer with Thunderbolt 5 or Thunderbolt 4 port; USB4 computer where eGPU support is available |
| GPU Compatibility | NVIDIA GeForce RTX 50 / 40 / 30 Series; AMD Radeon RX 9000 / 7000 / 6000 Series |
| Maximum GPU Size | Triple-wide card, not exceeding 345 mm x 155 mm x 70 mm |
| GPU Power Connectors | Three 8-pin or one 16-pin 12VHPWR |
| Thunderbolt 5 Computer Port | Provides up to 100W laptop charging |
| Thunderbolt Peripheral Port | Passes through host port capabilities; provides up to 15W power |
| USB Ports | Three USB 3.2 Gen 2 Type-A ports, up to 10Gbps |
| Ethernet | RJ45 5GbE with Realtek RTL8157 controller; supports 5Gbps / 2.5Gbps / 1Gbps / 100Mbps |
| Thunderbolt Controller | Intel JHL9580 |
| Power Supply | Universal 850W, 100-240V AC, 50-60Hz |
| Dimensions | 8.3 x 15.6 x 9.6 in. / 21 x 39.6 x 24.5 cm |
| Weight | 14.2 lb / 6.4 kg |
| Warranty | 2-year product warranty |
| Package Contents | Breakaway Box 850 T5 enclosure, region-specific power cable, 0.8-meter Thunderbolt 5 cable, documentation |
FAQ
Is Sonnet Breakaway Box 850 T5 a complete graphics card?
No. It is an external GPU enclosure and Thunderbolt 5 dock. A compatible desktop graphics card must be installed separately.
Which computers are supported?
It is designed for Windows 11 computers with Thunderbolt 5 or Thunderbolt 4 ports and also supports USB4 systems where the computer manufacturer enables eGPU compatibility. Windows 11 2024H2 or newer is required.
Can it charge my laptop?
Yes. The Thunderbolt 5 computer port provides up to 100W laptop charging, depending on the connected computer's USB-C / Thunderbolt charging support.
What GPU size can be installed?
It supports triple-wide GPU cards up to 345 mm long, 155 mm high, and 70 mm wide. Always check your GPU's physical dimensions and power connector requirements before installation.
Does it work with modern NVIDIA and AMD GPUs?
Yes. Sonnet lists compatibility for NVIDIA GeForce RTX 50, 40, and 30 Series cards, and AMD Radeon RX 9000, 7000, and 6000 Series cards.
Is it only for graphics cards?
No. In addition to GPU workflows, the chassis can support Thunderbolt-compatible PCIe cards, making it useful for select professional audio, video I/O, and specialty expansion workflows.
What extra ports are included?
The built-in dock includes one Thunderbolt 5 peripheral port, three USB 3.2 Gen 2 Type-A ports, and a 5 Gigabit Ethernet RJ45 port.
Note: GPU card, computer, display, keyboard, mouse, storage devices, and other accessories shown in product images are not included unless separately specified. Check GPU power, size, driver, OS, and computer eGPU compatibility before purchase.
A Future-Ready eGPU Platform for Windows 11 Workstations
Sonnet eGPU Breakaway Box 850 T5 combines Thunderbolt 5 speed, 850W power, broad modern GPU support, 100W laptop charging, 5GbE networking, and USB connectivity in one clean desktop expansion system for creators, engineers, AI users, and gamers.
