eGPU Breakaway Box 750ex

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eGPU Breakaway Box 750ex
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eGPU Breakaway Box 750ex

Includes two 8-pin (6+2 pin) auxiliary power connectors

750W power supply; supports cards requiring up to 375W of continuous power plus an additional 100W peak power

Provides 85W 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

750ex Model Includes: Integrated hub with four USB 3.2 Gen 1 Type A ports and one Gigabit Ethernet Port


Add a High-performance Video Card to Create Your Own Personal eGPU Workstation

Transform Your Thunderbolt Computer Into a Graphics Workstation

Whether you’re editing, rendering, color grading, animating or creating special effects, many of the pro applications you use 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 bottleneck performance when performing these tasks. Happily, there’s a simple path to greater productivity—add a Sonnet external GPU (eGPU). The eGPU Breakaway™ Box 750 and 750ex Thunderbolt 3 to GPU PCIe card expansion systems boost your eGPU-compatible computer’s graphics performance by connecting a high-performance GPU card to your computer via a single cable.

Future-proof Upgrade

With each new generation of GPU cards, users can look forward to a step (or leap) forward in performance. Less predictable is how much power they will require to operate—better performance frequently requires increased power. For eGPU users, power consumption can be a concern. Don’t limit your future card choices—choose a Sonnet eGPU Breakaway Box 750 or 750ex. Equipped with 750W power supplies, these Sonnet chassis easily support the highest power demands of latest GPUs and have plenty of extra power to support GPU cards from generations to come.

Two Models. Your Choice:

Both eGPU Breakaway Box models are Thunderbolt Certified and include a Thunderbolt 3 cable to connect the system to your computer. The 750ex provides a handy connection hub for USB devices and Ethernet connectivity.


Boosts Graphics Performance

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


Cuts Application Task Times

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


750W Power Supply

Support the power requirements of the latest compatible GPU cards; future-proof design handles higher power requirements of cards to come.


Supports Many of the Latest GPU Cards

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


Multi-eGPU Acceleration Support

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


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.


Quietest Configurable eGPU System Available

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


Choice of Models

Both models support the same GPU cards, include the same power supply, and provide the same portable computer charging support; the 750ex adds additional connectivity.


750ex Model: Additional Connectivity

Adds four 5Gb/s USB Type A ports to connect peripherals, plus an RJ45 Gigabit Ethernet port for a wired network connectivity.


Single-Port 40Gbps Thunderbolt 3 Interface

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


Thunderbolt Certified

Certified for Thunderbolt for use with Mac® computers.


Mac and WIndows Compatible

Compatible with Mac and Windows computers with Thunderbolt 3 ports.


Mac Compatibility


macOS Big Sur compatible

Mac with Thunderbolt 3 ports and macOS 10.13.6+

Automatically accelerates AMD RX eGPU connected monitors,and games and select apps run on those monitors(3)

macOS drivers for NVIDIA GPU cards are not compatible withThunderbolt Technology

One eGPU Breakaway Box (WX9100, for example) supports up tosix external 4k monitors @60Hz

Mac with Thunderbolt 3 ports and macOS 10.14.6+ (Mac minisee note 10)

Additional Features:

Support added for AMD RX 560 and RX 590 AMD GPUs

Accelerate games and applications run on the internaldisplay (or Thunderbolt Display) by selecting the App, selecting Get Info,and checking Prefer External GPU(4)

Windows 10 support under Parallels Desktop for Mac(5)

Support for two eGPU Breakaway Box eGPUs and up to twelveexternal 4k monitors @60Hz

Mac with Thunderbolt 3 ports and macOS 10.15.7+

Additional Features:

Support added for AMD RX 5500, 5500 XT, 5600, 5600 XT, 5700,5700XT

Apple M1 Macs do not yet support eGPUs

Supports VIVE and VIVE Pro with AMD Radeon RX480 orbetter(6)

External GPUs not supported by Thunderbolt 2 or Thunderboltequipped Macs(7)

External GPUs not supported on Windows 10 under Boot Camp

Certified with all generation Thunderbolt Macs to supportThunderbolt-compatible non-GPU cards, such as AVID HDX(8) and RED ROCKET-X

Windows Compatibility


Windows PC with a Thunderbolt 3 port

GPU card use requires an eGPU-enabled Windows PC

Windows 10 (64-bit Edition, Version 1809 or greater)

Supports VIVE and VIVE Pro with NVIDIA GTX 1060 or AMDRadeon RX 480 or better(6)

Monitor Compatibility


1080P monitors using DP or HDMI ports

4K and 5K monitors using DP or HDMI ports

4K, 5K, and 6K Thunderbolt 3 monitors require a GPU cardwith USB-C output(12)

LG UltraFine 4K and 5K displays

Apple Pro Display XDR 6K

49 5120x1440 Dual QHD monitors using a DP port:

Dell Ultrasharp 49 Curved Monitor U4919DW

LG 49 inch 32:9 UltraWide Dual QHD IPS Curved LED Monitor49WL95C-W

Philips Brilliance 32:9 Superwide Curved LCD Display499P9H/27

Samsung 49 CRG9 Dual QHD Curved QLED Gaming MonitorLC49RG90SSNXZA

8K displays are compatible with Windows(11), but notcurrently compatible with macOS

Graphics Card Compatibility Chart


List of AMD and NVIDIA GPU cards arranged by cardmanufacturer, compatibility determined by the cards power requirements, andBreakaway Box models power capabilities



Part Number


GPU-750W-TB3 (eGPU Breakaway Box 750)

GPU-750EX-TB3 (eGPU Breakaway Box 750ex)




Form Factor


Desktop Thunderbolt 3 to PCIe card expansion system

External Connectors


Part No. GPU-750W-TB3

One Thunderbolt 3 port

Power (C14-type)

Part No. GPU-750WEX-TB3

One Thunderbolt 3 port

Power (C14-type)

Four USB Type A

One RJ45

Internal Connectors


Two 8-pin (6+2 pin) power connectors

Expansion Slot


One x16 mechanical (x4 electrical, Thunderbolt 3 spec) PCIe3.0

PCIe Card Supported


One full-length, full-height, double-width PCIe card

Power Supply


Universal 750W, 100-240V AC, 50-60 Hz

Supports cards requiring up to 375W of continuous power plusan additional 100W peak power

Power Delivery


GPU-750-TB3 provides laptop charging up to 100W

GPU-750EX-TB3 provides laptop charging up to 85W

Eco-Friendly Power Management


See video for description

Standy Power(9)


Consumes 8.5W (sleep) / 14W (idle)

Operating Temperatures


0C to 35C (32F to 95F)

Dimensions (WxDxH)


7.25 x 13.38 x 8 in. (18.5 x 34.0 x 20.2 cm)



7.1 lbs (3.2 kg)



RoHS 3 (Directive 2015/863)

IEC62368-1 and IEC62368-2

Package Contents


Part Number GPU-750W-TB3

eGPU Breakaway Box 750 enclosure

Power cord

0.7-meter Thunderbolt 3 (40Gbps, 100W) cable


Part Number GPU-750WEX-TB3

eGPU Breakaway Box 750ex enclosure

Power cord

0.7-meter Thunderbolt 3 (40Gbps, 100W) cable


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