eGFX Breakaway Box
Thunderbolt 3 to eGPU PCIe Card Expansion System
Connect a High-Performance Graphics Card or Other Bandwidth-Hungry PCIe Card to a Thunderbolt™ 3 Equipped Computer
Sonnet’s eGFX Breakaway Box, a Thunderbolt 3 to PCIe card expansion solution, supports any Thunderbolt compatible PCIe card, but is designed specifically for bandwidth-intensive video graphic cards. The Breakaway Box enables all the popular GPU cards that support connecting to a computer over Thunderbolt such as AMD Radeon® R9 and RX and NVIDIA® GeForce® GTX7, 9 and 10 series, providing GPU support for computationally-intensive applications and games.
Supports AMD XCONNECT Technology
Graphic Intensive Gaming
There’s no need 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! By delivering much higher frame rates for smooth game play, the Breakaway Box is ideal for enabling graphic-intensive gaming on computers (such as thin/light notebooks) that otherwise would not be able to produce an acceptable gaming experience. When used with computers that properly support eGPUs, accelerated graphics can either be displayed on your notebook’s own display panel or on external monitors. And, unlike with gaming laptops, when the next generation of GPUs rolls around and you are ready for another performance boost, simply upgrade the GPU card—nobody should have to replace their computer just to keep up with the latest in GPU technology.
Ready for Work, Coolest & Quietest eGFX Graphics Card Box on the Market
In addition to eGPU cards, the Breakaway Box supports every other Thunderbolt-compatible PCIe card, regardless of the card's length or width—its single x16 PCIe 3.0 slot easily accommodates full-length cards such as the RED Rocket-X or AVID Pro Tools|HDX.(4)
The Breakaway Box’s single-port 40Gbps Thunderbolt 3 interface ensures the full 2750 MB/s of PCIe bandwidth(1) is dedicated to the installed card.
The Sonnet eGFX Breakaway Box is the coolest and quietest eGFX box 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.
Connects High Performance GPU Cards to Computers with Thunderbolt 3 Ports—Connects a supported GPU card to your eGFX-compatible computer with Thunderbolt 3 ports
Supports Cards With Popular GPU Chipsets—Includes AMD Radeon R9 and RX and NVIDIA GeForce GTX 7, 9 and 10 series
x16 PCI Express 3.0 slot—Supports up to full-length, full-height, single- or double-width card
Supports Other Thunderbolt™ 3 Compatible PCIe Cards—Perfect for full-length cards such as the RED ROCKET-X or AVID Pro Tools|HDX(4)
40Gbps Thunderbolt 3 Interface with One Thunderbolt 3 (USB-C) Port—Ensures full 2750 MB/s of PCIe bandwidth(1)is dedicated to the installed card
Choice of Models—eGFX Breakaway Box supports up to 300W card and delivers 15W of upstream power; 550 model supports up to 375W card and delivers up to 87W upstream power to charge your computer; Developer Edition (included as part of the Apple External Graphics Development Kit, not sold separately) supports up to 225W card and delivers up to 60W of upstream power.
Quietest eGFX System Available—Large built-in, variable-speed, temperature-controlled fan quietly and effectively cools the installed card
Thunderbolt Certified for Mac & Windows
For Media Professionals
In today’s 4K workflows, harnessing the computational engine in today’s GPU cards is essential to keeping up with on-set and post production timelines. The eGFX Breakaway Box is ideal for supporting the acceleration of special effects, animation, color grading, rendering, and editing.
40Gbps Thunderbolt 3 Performance
Thunderbolt 3 is a leap forward in every way. Whether you’re editing 4K video at high frame rates or blasting aliens out of the sky, you can now transform your notebook into a true desktop experience. With up to 2750 MB/s available bandwidth(1), the Breakaway Box exploits its 40Gbps Thunderbolt 3 interface to offer the best-possible eGPU experience, or handle the most demanding, highest performance PCIe cards.
Two Models From Which to Choose
Sonnet offers two eGFX Breakaway Box models from which to choose, enabling you to select one best suited to your needs:
eGFX Breakaway Box
Includes one 8-pin (6+2 pin) plus one 6-pin auxiliary power connectors, supports cards requiring up to 300W of power (~600W recommended system power equivalent), and provides 15W of upstream power.
eGFX Breakaway Box 550
Includes two 8-pin (6+2 pin) auxiliary power connectors, supports cards requiring 375W of power (~750W recommended system power equivalent), and provides 87W of upstream power, useful for charging your notebook.
Additionally, the eGFX Breakaway Box Developer Edition (included as part of the Apple External Graphics Development Kit, not sold separately) includes one 8-pin auxiliary power connector, supports cards requiring 225W or less power (500W recommended system power equivalent), and provides 60W of upstream power.
All models include a 0.5-meter Thunderbolt 3 (40Gbps) cable to connect the box to your computer. Whichever model you choose, the Breakaway Box is Thunderbolt Certified for Mac and Windows.
Fire Power to Drive Multiple Displays and Charge Your Notebook
Ideal for Accelerating
• Special effects
• Color grading
Also Ideal for Enabling Graphic Intensive Gaming on Non-Gaming Computers:
• Enables high frame rate gaming with thin/light notebooks
• Accelerated graphics on notebook display or external display
• No need to carry around a heavy/expensive gaming laptop—plugin GPU power when you need it
eGFX Breakaway Box
Equivalent to 500W (sometimes 600W) recommended system power
One 8-pin (6+2 pin) plus one 6-pin
Supports up to 300W card
Provides laptop charging up to 15W
eGFX Breakaway Box 550
Equivalent to 600W recommended
Two 8-pin (6+2pin) power connectors
Supports up to 375W card
Provides laptop charging up to 87W
eGFX Breakaway Box 650
Equivalent to 750W recommended system power
Two 8-pin (6+2 pin) power connectors
Supports up to 375W card that also requires up to an additional 100W of peak power
Provides laptop charging up to 87W
Desktop Thunderbolt 3 to PCIe card expansion system
One Thunderbolt 3 (USB-C)
One PCIe 3.0 slot
x4 Electrical (Thunderbolt 3 Spec)
PCIe Card Supported
One full-length, full-height, double-width PCIe card
Liquid Cooling (Liquid Cooling Support)
Supports 120mm Water Block Coolers
Universal 110-240V AC, 50-60 Hz
0˚C to 35˚C (32˚F to 95˚F)
7.25 x 13.38 x 8 in. (18.5 x 34.0 x 20.2 cm)
7.1 lbs (3.2 kg)
eGFX Breakaway Box system
0.5-meter Thunderbolt 3 (40Gbps) cable
Note: PCIe cards sold separately
Specifications subject to change without notice
Mac with Thunderbolt 3 ports
Mac with a Thunderbolt 2 or Thunderbolt port with an Apple Thunderbolt 3 (USB C) to Thunderbolt 2 Adapter
GPU card use see Tech Note 2
PC with a Thunderbolt 3 port (GPU card requires an eGFX-enabled Windows PC)
Windows 10 (64-bit Edition Version 1703 or greater)
While the eGFX Breakaway box features a 40Gbps Thunderbolt 3 interface, some computers equipped with Thunderbolt 3 use an x2 PCIe lane implementation of Thunderbolt 3 technology that limits PCIe performance to 20Gbps. Find more computer information here. Full performance also requires the use of the included Thunderbolt 3 (40Gbps) cable, or other Thunderbolt 3 (40Gbps) cables; look for the Thunderbolt icon AND the number 3 on the connector housings to identify these cables.
Other than macOS High Sierra Developer Beta, macOS does not yet support connection of GPU cards over Thunderbolt and GPU card drivers are not yet officially Thunderbolt compatible for macOS. For more information, see Sonnet Support Library.
Choose eGFX Breakaway Box model that supports the power requirement of the chosen card.
Power adapter cable for Avid Pro Tools|HDX card sold separately.
| Stock code || SCsb-EGBT3|
| Brand || Sonnet|
| Series || Thunderbolt 3 eGFX Breakaway Box 350|
| Model || GPU-350W-TB3Z|
| Type || Thunderbolt3 Expansion Chassis - PCIe3 x16 slot - up to 300W card|
| ROHS || Y|
| Date added || 02/05/2017|
GPU-350W-TB3Z Spec Information
| Form Factor / Drive Height || 34 x 20.2 x 18.5 cm|
| Guarantee || 1yr|
| Weight (kg) || 6kg|
| Weight (bare) || 3.2kg|
| Watts || 300W for card + 15W for charging|
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