---
product_id: 376995182
title: "eGPU Breakaway Box 750ex TB3 Expansion System"
brand: "sonnet"
price: "€ 1105.74"
currency: EUR
in_stock: true
reviews_count: 6
category: "So N Ne T"
url: https://www.desertcart.be/products/376995182-egpu-breakaway-box-750ex-tb3-expansion-system
store_origin: BE
region: Belgium
---

# 750W power supply - future-proof energy Thunderbolt 3 interface - ultra-fast connection Supports 4K to 8K resolution - crystal-clear visuals eGPU Breakaway Box 750ex TB3 Expansion System

**Brand:** sonnet
**Price:** € 1105.74
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your graphics game — because your creativity deserves no limits!

## Quick Answers

- **What is this?** eGPU Breakaway Box 750ex TB3 Expansion System by sonnet
- **How much does it cost?** € 1105.74 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/376995182-egpu-breakaway-box-750ex-tb3-expansion-system)

## Best For

- sonnet enthusiasts

## Why This Product

- Trusted sonnet brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Simplicity:** Includes all necessary cables and ports, making setup effortless and workspace clutter-free with integrated USB hubs.
- • **Future-Ready Powerhouse:** Robust 750W PSU supports the latest and upcoming GPU cards, ensuring your setup stays cutting-edge.
- • **Maximize Creative Workflow:** Slash rendering, editing, and animation times with GPU acceleration—because your projects deserve speed and precision.
- • **Unleash Pro-Level Graphics:** Connect high-performance GPUs via Thunderbolt 3 for desktop-grade power on your laptop or compact PC.
- • **Cross-Platform Compatibility:** Seamlessly works with Mac (excluding M1) and Windows systems, expanding your creative and gaming horizons.

## Overview

The SoNNeT eGPU Breakaway Box 750ex is a premium Thunderbolt 3 expansion system that empowers professionals to connect high-performance desktop GPUs to laptops or compact PCs. Featuring a powerful 750W power supply, it supports a wide range of AMD and NVIDIA GPUs, delivering up to 8K resolution output. Compatible with Mac (excluding M1) and Windows, it accelerates demanding creative workflows like editing, rendering, and animation, all while offering easy setup and integrated USB ports for enhanced connectivity.

## Description

Whether you’re editing, rendering, colour 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 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.

Review: Easy to set up and looks good - A nice looking box, though you need plenty of space for it. Great that the integrated power supply includes the necessary cables and that there is a thunderbolt cable to connect to my laptop. Having these makes the setup super easy.
Review: Great for use with an Intel NUC. - We wanted to try out Minecraft with ray-tracing and the onboard Intel Iris graphics of my NUC i7 was obviously not going to be enough. Rather than replacing the computer, I decided to add an external graphics card using this eGPU housing. I was pleased to buy it on special offer at 345 Euro which was a great price (price seems to fluctuate quite a lot as stock comes and goes with different suppliers). The case is much bigger than I had expected, but I guess that is necessary to house the power supply and to fit the longer graphics cards. I went with a Asus GeForce Dual RTX 3060 12GB V2 OC Edition Gaming Graphics Card (DUAL-RTX3060-O12G-V2) for about 295 Euro, which fitted easily: https://www.desertcart.de/dp/B096658ZWP Noise is very low. I would say it is actually silent compared to the fans of my NUC11 i7. Build quality seems very high, with good instructions for opening the case and installing the graphics card (not that this is exactly difficult to work out for yourself anyway!). The external USB ports on the back of the unit are very useful, and mean that I have been able to get rid of a USB hub that was needed for webcam, sounds and DVD writer. All works perfectly. The result - we can now play Minecraft with way better ray tracing graphics at between 50-60 fps. Ok so the graphics might be a little held back by being in an external enclosure compared to plugged directly into the motherboard, but the RTX 3060 was enough for what we wanted. Maybe the limitations of an eGPU enclosure are only significant with faster graphics cards? So I now have a decent PC for gaming, but also a tiny NUC that I can disconnect and easily carry when I need to work away from home. Almost best of both worlds, so I'm pleased. Be sure to check the list of compatible graphics cards on the SoNNet website before purchasing to make sure it fits (but almost every card I checked seemed to be on the list). **Conclusion** I would 100% recommend, very pleased in every respect, but worth watching the price for a while and buying when it is on offer.

## Features

- Boosts graphics performance by allowing you to connect a high-performance GPU card to your computer with Thunderbolt 3 ports. Mac & Windows Compatible. *M1 Macs are NOT compatible with GPUs
- Cuts application task times by enabling GPU acceleration to significantly improve editing, rendering, colour grading, animation, and special effects performance
- 750W power supply supports 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 including AMD Radeon VII, RX, RX Vega, Pro W and Pro WX models, and NVIDIA GeForce RTX series, TITAN, and Quadro models
- Includes 2-year product warranty and free lifetime customer technical support

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08Q755RQS |
| Antenna Location | Professional |
| Best Sellers Rank | 75,161 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 395 in Graphics Cards |
| Box Contents | a Sonnet eGPU, a high-performance GPU card, four USB 3.2 Gen 1 Type A ports (for 750ex model) |
| Brand | SoNNeT |
| Brand Name | SoNNeT |
| Compatible Devices | Desktop, Laptop |
| Customer Reviews | 4.0 out of 5 stars 127 Reviews |
| Display Maximum Resolution | 3840x2160 |
| GPU Series | NVIDIA Quadro |
| Global Trade Identification Number | 00732311013027 |
| Graphics Card Interface | PCI-Express x16 |
| Graphics Card Ram | 8 GB |
| Graphics Coprocessor | AMD Radeon VII |
| Graphics Description | AMD Radeon VII |
| Graphics RAM size | 8 GB |
| Graphics RAM type | GDDR6 |
| Graphics Ram Type | GDDR6 |
| Graphics co-processor | AMD Radeon VII |
| Graphics processor manufacturer | AMD |
| Item Dimensions L x W | 34L x 18.4W centimetres |
| Manufacturer | SoNNeT |
| Manufacturer Part Number | GPU-750WEX-TB3 |
| Maximum Display Resolution | 7680x4320 |
| Model Name | Breakaway Box 750ex |
| Model Number | GPU-750WEX-TB3 |
| Number of Fans | 1 |
| Product Warranty | 2 Years |
| UPC | 732311013027 |
| Unit Count | 1.0 count |
| Video Output Interface | Thunderbolt 3 |
| Video Processor | AMD |
| Video output interface | Thunderbolt 3 |

## Product Details

- **Brand:** SoNNeT
- **Compatible devices:** Desktop, Laptop
- **Graphics RAM size:** 8 GB
- **Graphics RAM type:** GDDR6
- **Graphics card interface:** PCI-Express x16
- **Graphics co-processor:** AMD Radeon VII
- **Graphics processor manufacturer:** AMD
- **Included components:** a Sonnet eGPU, a high-performance GPU card, four USB 3.2 Gen 1 Type A ports (for 750ex model)
- **Recommended uses for product:** Professional
- **Video output interface:** Thunderbolt 3

## Images

![eGPU Breakaway Box 750ex TB3 Expansion System - Image 1](https://m.media-amazon.com/images/I/81zwG6oBgyL.jpg)
![eGPU Breakaway Box 750ex TB3 Expansion System - Image 2](https://m.media-amazon.com/images/I/71fNuKzCPML.jpg)
![eGPU Breakaway Box 750ex TB3 Expansion System - Image 3](https://m.media-amazon.com/images/I/81EZLEAt6JL.jpg)
![eGPU Breakaway Box 750ex TB3 Expansion System - Image 4](https://m.media-amazon.com/images/I/61vYbY6sycL.jpg)
![eGPU Breakaway Box 750ex TB3 Expansion System - Image 5](https://m.media-amazon.com/images/I/61Mh8P+fC2L.jpg)

## Questions & Answers

**Q: Will nvidia geforce rtx 4090 work?**
A: The 4090 is much larger than a 3090.

**Q: Will rtx nvida 3080 work ?**
A: The maximum card size that will fit our chassis is 312mm x 160mm x 55mm. Most NVIDIA RTX 3080s do not fit, but a few do, such as  EVGA GeForce RTX 3080 XC3 Gaming and ASUS GeForce RTX 3080 TUF Gaming. For a compatiblity list of hundreds of GPU cards, see the reference pdf on the sonnettech web site.

**Q: Can it support a gpu with a quadruple slot?**
A: The maximum card size that will fit in a Breakaway Box is 312mm x 160mm x 55mm. If the card is larger in any dimension, it will not fit.

**Q: Do they have a usb c only version of this anywhere? I don't have thunderbolt :(**
A: eGPUs require a Thunderbolt interface on the computer

## Customer Reviews

### ⭐⭐⭐⭐ Easy to set up and looks good
*by P***L on 17 December 2024*

A nice looking box, though you need plenty of space for it. Great that the integrated power supply includes the necessary cables and that there is a thunderbolt cable to connect to my laptop. Having these makes the setup super easy.

### ⭐⭐⭐⭐⭐ Great for use with an Intel NUC.
*by J***S on 23 January 2024*

We wanted to try out Minecraft with ray-tracing and the onboard Intel Iris graphics of my NUC i7 was obviously not going to be enough. Rather than replacing the computer, I decided to add an external graphics card using this eGPU housing. I was pleased to buy it on special offer at 345 Euro which was a great price (price seems to fluctuate quite a lot as stock comes and goes with different suppliers). The case is much bigger than I had expected, but I guess that is necessary to house the power supply and to fit the longer graphics cards. I went with a Asus GeForce Dual RTX 3060 12GB V2 OC Edition Gaming Graphics Card (DUAL-RTX3060-O12G-V2) for about 295 Euro, which fitted easily: https://www.amazon.de/dp/B096658ZWP Noise is very low. I would say it is actually silent compared to the fans of my NUC11 i7. Build quality seems very high, with good instructions for opening the case and installing the graphics card (not that this is exactly difficult to work out for yourself anyway!). The external USB ports on the back of the unit are very useful, and mean that I have been able to get rid of a USB hub that was needed for webcam, sounds and DVD writer. All works perfectly. The result - we can now play Minecraft with way better ray tracing graphics at between 50-60 fps. Ok so the graphics might be a little held back by being in an external enclosure compared to plugged directly into the motherboard, but the RTX 3060 was enough for what we wanted. Maybe the limitations of an eGPU enclosure are only significant with faster graphics cards? So I now have a decent PC for gaming, but also a tiny NUC that I can disconnect and easily carry when I need to work away from home. Almost best of both worlds, so I'm pleased. Be sure to check the list of compatible graphics cards on the SoNNet website before purchasing to make sure it fits (but almost every card I checked seemed to be on the list). **Conclusion** I would 100% recommend, very pleased in every respect, but worth watching the price for a while and buying when it is on offer.

### ⭐⭐⭐⭐⭐ Ideal Business Setup
*by S***. on 29 October 2023*

No issues or hassles. The directions had good pictures to follow along. I use this for business (no gaming) for zoom meetings, lots of open tabs, and six monitors while having the flexibility of a laptop. The reviews here on Amazon were a little intimidating, however I found the installation of this eGPU and video card to be straightforward plug-n-play and the product to be excellent as advertised. It was easy enough to do myself without needing the manufacturer's support desk. I added 64Gb RAM to my laptop and a Radeon R7 350 HD7750 4GB to this eGPUex. The internet port and 4 usb ports on this eGPUex model eliminated the need for a separate dock to have just one usb thunderbolt cord to my laptop. To have a clean desk, I used a simple under desk laptop mount. I also used a pc under desk mount. I combined two monitor stands for three monitors each on a single extended pole. I added a reinforcement plate for my standup desk for the mount which gives good stability. I used adhesive clips and adhesive cable ties to manage all the cables underneath my desk. I also got a pebbles sound speakers so I wouldn't need a headset and Bluetooth for mouse, keyboard to not need a docking station and reduce the number of wires.

## Frequently Bought Together

- Sonnet eGPU Breakaway Box 750ex - External GPU Chassis
- Cable Matters [Intel Certified] 40Gbps Thunderbolt 4 Cable 3.3ft with 8K Video and 240W Charging - 1m, Compatible with USB4, Thunderbolt 3 Cable and USB-C
- Cable Matters [Intel Certified] 40Gbps Active Thunderbolt 4 Cable 6.6 ft with 100W Charging and 8K Video - Fully Compatible with USB C/USB-C, USB 4 / USB4, and Thunderbolt 3

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-08-03*