Amazing Graphics Acceleration
Create Your Own Personal eGPU Workstation with a High-performance Video Card
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eGFX Breakaway Box 650
Thunderbolt™ 3 to eGPU Card Expansion System

Turn Your Computer with Thunderbolt 3 into a Graphics Workstation

From editing to rendering to color grading, and from animation to special effects, many pro applications rely on desktop and workstation graphics (GPU) cards to do the heavy lifting in processing data. Unfortunately, many popular computers are equipped only with integrated graphics or low-power discrete GPUs that can cause performance bottlenecks when performing these tasks. Happily, there’s a simple solution to greater performance—add a Sonnet external GPU (eGPU). The eGFX Breakaway™ Box Thunderbolt 3 to GPU PCIe card expansion systems boost your eGFX-compatible computer’s graphics performance by connecting a high-performance GPU card via a single cable.
Thunderbolt Certified & Recommended by Apple Icon

Two Models to Choose From

Both Breakaway models are Thunderbolt Certified, Apple® recommended, and include a 40Gbps Thunderbolt 3 cable to connect the system to your computer. Choose the one that best suits the power requirements of the card you intend to use, and, if you're using a laptop or notebook, the Power Delivery capability you need to charge your computer.

eGFX Breakaway Box 550 Model

eGFX Breakaway Box 550

  • Includes two 8-pin (6+2 pin) auxiliary power connectors
  • Supports cards requiring 375W of power (equivalent to 600W recommended system power)
  • Provides 87W of upstream power (useful for charging your notebook)
  • Supports nearly every compatible GPU card, with the exception of ones such as the AMD Radeon RX Vega 64, Pro WX 8200 and WX9100, and overclocked NVIDIA cards with extremely high peak power requirements
  • See the list of Supported GPU Cards (PDF)
eGFX Breakaway Box 650 Model

eGFX Breakaway Box 650

  • Includes two 8-pin (6+2 pin) auxiliary power connectors
  • Supports cards requiring 375W of continuous power plus an additional 100W peak power (equivalent to 750W recommended system power)
  • Provides 100W of upstream power (useful for charging your notebook)
  • AMD approved for the air-cooled editions of the AMD Radeon RX Vega 64, Radeon Pro WX 8200, and WX 9100
  • Designed and qualified to also support overclocked NVIDIA cards with high peak power requirements
  • See the list of Supported GPU Cards (PDF)
eGPU Cards

Broad GPU Card Compatibility

eGFX Breakaway Box systems are designed specifically to accommodate up to the largest and most power-hungry GPU cards. With two models to choose from, the Breakaway Box line supports all Thunderbolt-compatible cards(1) with popular GPU chipsets—such as AMD Radeon™ RX series (including VEGA GPUs); and NVIDIA® GeForce® series, and TITAN GPUs. Even the latest pro cards—AMD Radeon Pro and NVIDIA Quadro® GPUs—are supported! (Note that macOS® supports only AMD GPU cards in eGPU systems, while Windows® supports AMD and NVIDIA cards.) With a GPU card installed, the Breakaway Box functions as a simple plug-in upgrade to significantly accelerate the demanding needs of your video production workflow.

Key Features

Boost Graphics Performance Icon

Boosts Graphics Performance

Connects a high-performance GPU card to your computer with Thunderbolt 3 ports.

Cut Applications In Half Icon

Cuts Application Task Times

Enables GPU acceleration to significantly improve editing, rendering, color grading, animation, and special effects performance.

Supports Latest eGPU Cards Icon

Supports the Latest GPU Cards

Includes AMD Radeon VII, RX, RX Vega, Pro and Pro W/WX models; and NVIDIA GeForce GTX 10 and RTX 20 series, TITAN, and Quadro models.

Multi-eGPU Acceleration Icon

Multi-eGPU Acceleration Support

Connect two, three, or four eGFX Breakaway Boxes to slash task times on supported applications.

Supports Non-GPU Cards Icon

Supports Non-GPU PCIe Cards

Supports Thunderbolt-compatible full-length, full-height, single- or double-width cards –perfect for pro audio I/O and DSP cards and pro video I/O and transcoding cards.

40Gpbs Icon

Single-Port 40Gbps Thunderbolt 3 Interface

Ensures full 2750 MB/s of PCIe bandwidth(2) is dedicated to the installed card. 

Quietest Configurable eGFX System Icon

Quietest Configurable eGFX System Available

Large built-in, variable-speed, temperature-controlled fan quietly and effectively cools whatever card you install.

Choice of Models Icon

Choice of Models

Choose the one that meets the power requirements of the card you’ll install, and Power Delivery capability you need to charge your computer.

Thunderbolt Certified & Apple Recommended Icon

Thunderbolt Certified and Apple Recommended

Certified for Thunderbolt and recommended by Apple for use with Mac® computers.

Free Lifetime Tech Support
Performance Comparisons
eGFX Breakaway Box eGPU Performance
Adding your own graphics card delivers a significant graphics processing boost to popular video editing, visual effects, and modeling applications, cutting rendering times and enhancing VFX and color correction workflows. These performance comparisons illustrate potential advantages with popular eGPU cards and applications.
MacBook Pro with eGFX Breakaway Box
MacBook Pro Application Acceleration
Adobe Premiere Pro
H.264 Export Speed Test (10 minute timeline of 4K footage with multiple effects)
Adobe Premiere H.24 Export Performance Graph
Shorter bars better
DaVinci Resolve
1080p Candle Benchmark (24 fps timeline with 36 blur nodes)
Davinci Resolve 1080p Candle Performance Graph
Longer bars better
Autodesk Maya
Rendering Performance
Autodesk Maya Rendering Performance Graph
Longer bars better
Maxon Cinema 4D
Rendering Performance
Maxon Cinema 4D Rendering Performance Graph
Longer bars better
iMac Pro with eGFX Breakaway Box
iMac Pro Application Acceleration
DaVinci Resolve 15
1080p Candle Benchmark (24 fps timeline with 36 blur nodes)
Davinci Resolve 15 1080p Candle Performance Graph
Longer bars better
DaVinci Resolve 15
MP4 Render Speed Test (10 minute timeline of 8K footage with 4 nodes)
Davinci Resolve 15 MP4 Render Performance Graph
Shorter bars better
iMac Pro (10-core) Application Acceleration
Maxon Cinema 4D
Rendering Speed Test (Bamboo demo scene, 200 Ray Trace iterations)
Maxon Cinema 4K Rendering Performance Graph
Shorter bars better
eGFX Breakaway Box
Radeon Pro WX 9100 vs Radeon RX 580
An eGFX Breakaway Box 650 outfitted with an AMD Radeon Pro WX 9100 offers outstanding performance. The graphs below compare the WX 9100 against the RX 580 (as featured in the custom-designed, all-in-one Blackmagic eGPU). While delivering admirable performance, the RX 580 is greatly outclassed by the WX 9100 for pro-graphics acceleration.
Radeon Pro WX 9100 Performance Graph
Longer bars better

Multi-GPU Support

Four eGFX Breakaway Boxes Icon

4K to 8K Workflows –
Connect Two or More Breakaway Boxes

Many task times on supported applications—such as Adobe® Premiere® Pro, DaVinci Resolve™, and Maxon Cinema 4D™, to name a few—can be cut significantly with one eGFX Breakaway Box connected. For computers with multiple Thunderbolt 3 ports, times can be slashed when two, three, or four Breakaway Boxes are employed. Connecting one or more eGPUs can multiply your computer’s graphics processing power, enabling it to handle 4K, 5K, 6K, and 8K workflows more efficiently. Plus, the onboard (discrete) GPU also contributes to the aggregate performance.

Thunderbolt Logo

Purpose Built – Full-length PCIe Card Support

An eGFX Breakaway Box’s single x16 PCIe 3.0 slot accommodates full-length cards. High-output power supplies support trouble free operation. The Breakaway Box’s single-port 40Gbps Thunderbolt 3 interface ensures the full 2750 MB/s of PCIe bandwidth(2) is dedicated to the installed card.
eGFX Breakaway Box with GPU Card Illustration
Fan Icon

Coolest and Quietest External GPU Card Box on the Market

The Sonnet eGFX Breakaway Box is the coolest and quietest add-your-own-card eGPU on the market—with its large variable-speed temperature-controlled fan that quietly and effectively cools the installed card, the Breakaway Box can be comfortably used in noise-sensitive working environments.

eGFX Breakaway Box Fan

Liquid Coolers Supported

Looking for an even quieter experience? The eGFX Breakaway Box supports 120mm x 1, single-fan radiators (sold separately). Water block coolers run quieter than active fans, plus, water block coolers enable higher overclocking—simply replace the system fan with the radiator/fan assembly and install the card as usual.
EVGA Hybrid Liquid Cooler
sold separately

Graphic-Intensive Gaming Support

There’s no need for you to carry a heavy and expensive gaming laptop to have a great gaming experience—just plug in a Breakaway Box and add the GPU power you want when you need it! A Breakaway Box is ideal for empowering graphic-intensive gaming on a MacBook Air®, Ultrabook™ and other thin/light notebook computers that otherwise would deliver a poor gaming experience. Accelerated graphics can either be displayed on your notebook’s own display panel or on one, two, or more external monitors. And, unlike with gaming laptops, you can upgrade the GPU card in the Box to keep up with the latest in GPU technology.

eGFX Breakaway Box Connected to MacBook Pro

Add GPU Power to Mac and Windows Notebooks with Integrated Graphics

Multi-monitor Gaming Setup

Experience Amazing Gaming on Your Notebook's Screen or an Expansive Multi-monitor Set-up

Happy Customer

Upgradeable – Plug in a New Card to Stay Current with GPU Technology

See Tech Specs for footnotes.
Product specifications and information subject to change without notice. Computer hardware and accessories featured in photos that are not included with product are shown for illustration purposes; items sold separately.