---
product_id: 47646055
title: "SoNNeT eGFX Breakaway Box 550W (GPU-550W-TB3)"
brand: "sonnet"
price: "€ 38.44"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.ie/products/47646055-sonnet-egfx-breakaway-box-550w-gpu-550w-tb3
store_origin: IE
region: Ireland
---

# 550W Power Supply Thunderbolt 3 Connectivity Supports High-Performance GPUs SoNNeT eGFX Breakaway Box 550W (GPU-550W-TB3)

**Brand:** sonnet
**Price:** € 38.44
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate Your Graphics Game!

## Quick Answers

- **What is this?** SoNNeT eGFX Breakaway Box 550W (GPU-550W-TB3) by sonnet
- **How much does it cost?** € 38.44 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/47646055-sonnet-egfx-breakaway-box-550w-gpu-550w-tb3)

## 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

- • **Fast Data Transfer:** Includes a 0.5m 40Gb Thunderbolt 3 cable for lightning-fast connections.
- • **Seamless Compatibility:** Works with Thunderbolt 3 Macs and Windows 10 PCs for versatile use.
- • **Charge While You Create:** Delivers up to 87W of power to charge your laptop while you work.
- • **Power Up Your Creativity:** 550W power supply supports cards up to 375W, ensuring peak performance.
- • **Unleash Your GPU Potential:** Connects high-performance GPU cards up to 312mm x 160mm effortlessly.

## Overview

The SoNNeT eGFX Breakaway Box 550W is a powerful external GPU enclosure designed to connect high-performance graphics cards to Thunderbolt 3-enabled computers. With a robust 550W power supply, it supports a wide range of GPUs, ensuring that creative professionals can enhance their workflow with superior graphics performance. The box also provides power delivery to charge laptops, making it an essential tool for on-the-go creators.

## Description

Buy SoNNeT eGFX Breakaway Box 550W (GPU-550W-TB3): Network Cards - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Outstanding external graphics support on Lenovo P series mobile workstation - I purchased this to attach a more powerful GPU to my Lenovo P52 mobile workstation. Physical installation was no different than installing a video card in a desktop PC (arguably easier). The laptop was already loaded with Nvidia software for the built-in GPU, so setup was very little more than "plug it in and wait." Some things I wish I'd have been able to find more information on before I ordered it: -Yes, at least with a Lenovo P series running Windows 10, you can have both the onboard discrete GPU and the eGPU enabled. The onboard GPU can be configured to drive an external display attached to the laptop itself and the built-in panel, or it can be configured as a dedicated PhysX coprocessor to offload those operations from the main GPU. Windows generally disables the onboard GPU when an eGPU is connected, but if you re-enable it in the Device Manager under Control Panel, you can then assign the GPU to a display(s), or configure it as a dedicated PhysX processor. Whichever is more useful (disabled, enabled on the laptop display + displays attached to the laptop, or dedicated PhysX) will depend on your specific intended use. -The speed, if using adequate cabling, is on par with having the GPU connected via an internal PCIe slot. I am using an Nvidia GTX 2060 which had previously been in my desktop workstation that was built mainly for CAD. The machine was built around a pair of relatively dated hex-core Xeons, and though the motherboard had a 16 lane PCIe slot, the slot operated electrically as an 8x PCIe 2.0 interface. This was mostly fine for CAD and other applications that don't need to load lots of texture data, but it did show its limitations when running applications such as games. Migrating from an 8x PCIe 2.0 interface to a Thunderbolt 3 interface has produced a noticeable reduction in average load times (between 15 to 50% depending on the game) and I have had no issues at all with performance or stability. -Hot-plugging: Yes, you can hot-plug the Thunderbolt 3 cable. I often come home, drop my suspended laptop into a laptop stand, and connect both this, and a second Thunderbolt 3 PCIe enclosure containing NVMe storage and a discrete sound card before opening the lid. Upon waking the machine up, it takes about 20 seconds to initialize the external hardware, but I've not encountered any issues with things not working when hot-plugged. -Hot-unplugging: This has been a little more problematic, but those issues had more to do with specific software not recognizing the change. The worst that happens is I have to reboot the machine and manually specify what sound hardware to use. -Noise: Some people have complained about the noise level of the internal fan, but I have no complaints. I use this setup for professional audio recording, and the noise levels aren't meaningfully higher than the fans in the laptop itself, and I don't have to do anything beyond what I'd normally do to remove background hiss from recordings. If you are particularly sensitive to the sound levels, the fan is just a standard PC fan that plugs into a regular fan header on the adapter board inside of the enclosure so you could easily replace it with a quieter fan. (in which case, I would highly recommend Noctua.) One last note on cabling, the cable that comes with this is fairly short, but that's because actual 40gbps Thunderbolt 3 cables are fairly expensive items. You can get a longer cable, but you will want to make *absolutely certain* that it's a legitimate, certified cable, and that it's rated for 40gbps, and not 20gbps. A 20gbps cable *will* work, but it will obviously make certain things slower, but a standard USB-C cable WILL NOT WORK. When buying cables for any Thunderbolt device, it is imperative that you purchase legitimate, certified cables and not one of the cheap ones you find floating around, not just because those cables are likely to be slower and increase the risk of crashes, but in some cases they can actually damage your hardware. In all, I'm very happy with my Sonnet eGPU Breakaway Box, and would recommend it to anyone who was contemplating an eGPU setup. Just be sure to do the necessary research to determine if the card you intend to use supports eGPU in general, that it's on the hardware compatibility list for the enclosure (on Sonnet's website), and that it's supported by your OS.
Review: Works like a dream - XPS 9570 with RTX 2070 - I was a bit concerned based on some of the reviews here however the sonnet 550w breakaway box has worked flawlessly and is so easy to use. Firstly the box is whisper quiet and relatively easy to install. Once installed sure the back of the thunderbolt cable sticks out a little bit however it has never fallen out nor does it feels loose, no issues there, just a visual thing. I already have a 1050Ti as a dGPU all i did was download the nvidia drivers for the GIgabyte RTX 2070, installed them and that is all. Nvidia has a taskbar icon which shows you which gpu is acive and you can connect or disconnect it through there. It is literally plug and play. I plug the thunderbolt cable in and the egpu intiates. To disconnect i click on the nviida taskbar icon and hit disconnet. Easy. Box is quiet, temps reach a max of 74c with only a dual fan gpu and 15% overclock on the card. I get about a 20% loss due to thunderbolt 3 as expected. Also works plug and play when used just with my laptop as oppose to laptop and external monitor. No issues. All the plug and play issues seem to have been ironed out as the software side from drivers, bios etc are matured now.

## Features

- Connects High Performance GPU cards (up to 312mm x 160mm) to computers with a Thunderbolt 3 port. Also supports AVID HDX, Red Rocket-X and other x16 full-length PCIe cards (must have a Thunderbolt 3 connection, USB3C connection and Thunderbolt 2 adapters do not work)
- 550W power supply supports up to 375W card (up to 8-pin + 8-pin power connectors), and provides up to 87W of Power Delivery to charge a laptop.
- Breakaway Box 550 has one Thunderbolt 3 port, includes a 0.5m 40Gb Thunderbolt 3 cable
- Mac: Supports AMD RX 470,480,570,580/Vega 56 on Thunderbolt 3 Macs with macOS High Sierra (Boot Camp not supported). macOS supports two Breakaway Boxes.
- Windows: Supports NVIDIA GTX 1060,1070,1080,1080ti/Titan X, Xp,V/Quadro P4000,P5000,P6000 or AMD Radeon RX 570,580/Vega 56/WX 5100,7100 on Thunderbolt 3 computers with Windows 10.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0764J5QVD |
| Customer Reviews | 4.2 4.2 out of 5 stars (196) |
| Date First Available | June 16, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.6 pounds |
| Item model number | GPU-550W-TB3 |
| Manufacturer | Sonnet Technologies |
| Product Dimensions | 17.01 x 11.46 x 10.83 inches |

## Product Details

- **Brand:** Sonnet
- **Graphics Coprocessor:** AMD FirePro 2270
- **Graphics Processor Manufacturer:** AMD
- **Graphics Ram Size:** 8.00
- **Video Output Interface:** Thunderbolt 3 (USB-C)

## Images

![SoNNeT eGFX Breakaway Box 550W (GPU-550W-TB3) - Image 1](https://m.media-amazon.com/images/I/51uHHU7LvDL.jpg)
![SoNNeT eGFX Breakaway Box 550W (GPU-550W-TB3) - Image 2](https://m.media-amazon.com/images/I/51iw+CvGUcL.jpg)
![SoNNeT eGFX Breakaway Box 550W (GPU-550W-TB3) - Image 3](https://m.media-amazon.com/images/I/51enF9rAnBL.jpg)
![SoNNeT eGFX Breakaway Box 550W (GPU-550W-TB3) - Image 4](https://m.media-amazon.com/images/I/41mOBuGHt9L.jpg)
![SoNNeT eGFX Breakaway Box 550W (GPU-550W-TB3) - Image 5](https://m.media-amazon.com/images/I/31s5q3kNnvL.jpg)

## Questions & Answers

**Q: Is this compatible with amd radeon r9 270x ?**
A: You can go onto apple's support site and search Sonnet Breakaway box or eGPU. This page will tell you which Graphics cards are recommended for Mac and this specific breakaway box.

**Q: I saw a question about the gtx 970? is there enough clearance to use this card?**
A: Not sure about 970, but a Founder's 1080 and an RTX 2060 fit perfectly if those work for a size cmoparison.

**Q: does this product support the 2080ti / 2080?**
A: Yes the 550 Breakaway Box does support the GeForce RTX 2080 and 2080 Ti.

**Q: Is this product compatible with an Nvidia Tesla K80?**
A: No. The Tesla K80 is not on the NVIDIA list of supported eGPUs. Nvidia GPUs are not supported at all by Apple in macOS. The Tesla K80 does not have a fan or blower, which is required of a video card to be used in the Breakaway Box.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Outstanding external graphics support on Lenovo P series mobile workstation
*by H***G on June 16, 2020*

I purchased this to attach a more powerful GPU to my Lenovo P52 mobile workstation. Physical installation was no different than installing a video card in a desktop PC (arguably easier). The laptop was already loaded with Nvidia software for the built-in GPU, so setup was very little more than "plug it in and wait." Some things I wish I'd have been able to find more information on before I ordered it: -Yes, at least with a Lenovo P series running Windows 10, you can have both the onboard discrete GPU and the eGPU enabled. The onboard GPU can be configured to drive an external display attached to the laptop itself and the built-in panel, or it can be configured as a dedicated PhysX coprocessor to offload those operations from the main GPU. Windows generally disables the onboard GPU when an eGPU is connected, but if you re-enable it in the Device Manager under Control Panel, you can then assign the GPU to a display(s), or configure it as a dedicated PhysX processor. Whichever is more useful (disabled, enabled on the laptop display + displays attached to the laptop, or dedicated PhysX) will depend on your specific intended use. -The speed, if using adequate cabling, is on par with having the GPU connected via an internal PCIe slot. I am using an Nvidia GTX 2060 which had previously been in my desktop workstation that was built mainly for CAD. The machine was built around a pair of relatively dated hex-core Xeons, and though the motherboard had a 16 lane PCIe slot, the slot operated electrically as an 8x PCIe 2.0 interface. This was mostly fine for CAD and other applications that don't need to load lots of texture data, but it did show its limitations when running applications such as games. Migrating from an 8x PCIe 2.0 interface to a Thunderbolt 3 interface has produced a noticeable reduction in average load times (between 15 to 50% depending on the game) and I have had no issues at all with performance or stability. -Hot-plugging: Yes, you can hot-plug the Thunderbolt 3 cable. I often come home, drop my suspended laptop into a laptop stand, and connect both this, and a second Thunderbolt 3 PCIe enclosure containing NVMe storage and a discrete sound card before opening the lid. Upon waking the machine up, it takes about 20 seconds to initialize the external hardware, but I've not encountered any issues with things not working when hot-plugged. -Hot-unplugging: This has been a little more problematic, but those issues had more to do with specific software not recognizing the change. The worst that happens is I have to reboot the machine and manually specify what sound hardware to use. -Noise: Some people have complained about the noise level of the internal fan, but I have no complaints. I use this setup for professional audio recording, and the noise levels aren't meaningfully higher than the fans in the laptop itself, and I don't have to do anything beyond what I'd normally do to remove background hiss from recordings. If you are particularly sensitive to the sound levels, the fan is just a standard PC fan that plugs into a regular fan header on the adapter board inside of the enclosure so you could easily replace it with a quieter fan. (in which case, I would highly recommend Noctua.) One last note on cabling, the cable that comes with this is fairly short, but that's because actual 40gbps Thunderbolt 3 cables are fairly expensive items. You can get a longer cable, but you will want to make *absolutely certain* that it's a legitimate, certified cable, and that it's rated for 40gbps, and not 20gbps. A 20gbps cable *will* work, but it will obviously make certain things slower, but a standard USB-C cable WILL NOT WORK. When buying cables for any Thunderbolt device, it is imperative that you purchase legitimate, certified cables and not one of the cheap ones you find floating around, not just because those cables are likely to be slower and increase the risk of crashes, but in some cases they can actually damage your hardware. In all, I'm very happy with my Sonnet eGPU Breakaway Box, and would recommend it to anyone who was contemplating an eGPU setup. Just be sure to do the necessary research to determine if the card you intend to use supports eGPU in general, that it's on the hardware compatibility list for the enclosure (on Sonnet's website), and that it's supported by your OS.

### ⭐⭐⭐⭐⭐ Works like a dream - XPS 9570 with RTX 2070
*by A***T on April 20, 2020*

I was a bit concerned based on some of the reviews here however the sonnet 550w breakaway box has worked flawlessly and is so easy to use. Firstly the box is whisper quiet and relatively easy to install. Once installed sure the back of the thunderbolt cable sticks out a little bit however it has never fallen out nor does it feels loose, no issues there, just a visual thing. I already have a 1050Ti as a dGPU all i did was download the nvidia drivers for the GIgabyte RTX 2070, installed them and that is all. Nvidia has a taskbar icon which shows you which gpu is acive and you can connect or disconnect it through there. It is literally plug and play. I plug the thunderbolt cable in and the egpu intiates. To disconnect i click on the nviida taskbar icon and hit disconnet. Easy. Box is quiet, temps reach a max of 74c with only a dual fan gpu and 15% overclock on the card. I get about a 20% loss due to thunderbolt 3 as expected. Also works plug and play when used just with my laptop as oppose to laptop and external monitor. No issues. All the plug and play issues seem to have been ironed out as the software side from drivers, bios etc are matured now.

### ⭐⭐⭐⭐ eGPU and a MacBook Pro 16"
*by A***R on March 24, 2020*

Pros: Bleeding edge technology with eGPUs provides desktop class graphics performance Nvidia 2070 Super GPU runs Half-Life Alyx perfectly through my HTC Vive Cons: AMD GPUs work well in Mac OS for games specifically updated to use an eGPU. Other games won't run at all or are highly unstable. AMD GPUs are at best hit-or-miss in bootcamp. Some users report success with rigging them up to work. I was not able to get an AMD Radeon RX480 to connect successfully. Nvidia GPUs work great in bootcamp (see pros above) but are unsupported in Mac OS and don't work at all. Windows 10 seems to have stability issues with the eGPU connected. For instance, do NOT attempt to boot with the eGPU connected. Do not let the computer hibernate. Do not let the computer sleep. Be careful not to plug in peripherals too fast or the whole system (including built-in trackpad and keyboard) will become unresponsive. Final Thoughts: Even with the above cons this was still a good purchase. I look forward to future system updates bringing greater stability. Now if we could just get some Nvidia drivers for Mac OS...

## Frequently Bought Together

- Sonnet Egfx Breakaway Box 550 W (Gpu-550 W-tb3)
- Maxonar Thunderbolt 3 Cable(1.2M/3.93Ft) TB3 USB C 4.0 Cable 40Gbps Data Transfer/100W/5A Charging/5K@60Hz Compatible with 2016/2017 MacBook M1,iMac,External SSD.
- Anker Thunderbolt 3.0 Cable 2.3 ft, Supports 100W Charging / 40Gbps Data Transfer USB C to USB C Cable, Ideal for Type-C MacBooks, Dell, iPad Air 4, iPad Pro 2020, Pixel, Hub, Docking, and More

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-12*