Sonnet eGPU Breakaway Box 750

Last Updated on August 4, 2021 by paularo

The Sonnet eGPU Breakaway Box 750 is one of the most affordable versatile external enclosure and it comes in at $325. It has certain features that stand out and it is compatible with both windows and MacOS. It supports various types of graphics card and it is different from the Sonnet eGPU Breakaway Box 750ex we will talk about the 750ex in a separate review. The enclosure has what it takes to accelerate your work flow rapidly. It also has some ports and even a PCIe expansion slot. The enclosure has some caveats that we will explore in this review. It has a thunderbolt 3 port and it is capable of boosting the performance of your MacBook or Chromebook as long as there is a thunderbolt 3 port on your laptop.

In this comprehensive review we will provide you with all the information you need to evaluate the Sonnet Breakaway Box 750 as the best eGPU for you. read on for its key features as well as pointers for selecting the best eGPU for your Laptop.

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Why you need the Sonnet eGPU Breakaway Box 750 for your laptop

Using a laptop without a GPU is a difficult task especially when you are into gaming or content creation like photo or video editing. A laptop that doesn’t have a GPU is only suitable for doing basic task and playing 3D games. It is not fast enough and if you start running intensive games and software’s on a laptop without GPU it will always crash. If you care about speed then you won’t go after a laptop without a GPU. These types of laptops are only suitable for commercial and office works. Sometimes people often buy laptops with high end specs and after a number of years the parts become outdated and worn out. That’s where the Sonnet eGPU Breakaway Box 750 comes in and it can help boost the performance of your old laptop. if your laptop has a thunderbolt 3 port then an external graphics enclosure can be used to increase the performce of your laptop. it will allow new and updated games run smoothly on your old laptop. the eGPU technology is still in its early stages and it already works fine with most laptops. Most people like the comfort of moving their laptops around and with an eGPU you can plug in and run your task anywhere. You can unplug your laptop when you are done and move it where ever you want to. You need the Sonnet eGPU Breakaway Box 750 enclosure because it will power your laptop if you pair it with a very strong GPU.

Selecting the Best eGPU for your laptop

The enclosure has a combination of metal and aluminum it also has openings that allows air circulate inside out the enclosure. Up front we have the sonnet logo and at the bottom we have a rubber foot that keeps the enclosure firm. At the back we have the PCIe slot and thunderbolt 3 port. there is a power switch and power connection port at the back. the box works well on macOS and windows but you should know that apple MacBook’s are selective when it comes to GPUs. the enclosure is big enough to house different sizes of GPUs it also has a great cooling system that keeps it cool while working. There is a 750W power supports and it has the ability to power hungry GPUs. it has 6 + 2 auxiliary power connectors and will use 100W to deliver power to your laptop while connected to the enclosure. One added advantage here is that the enclosure works well with over clocked NVIDIA cards. It can be used to edit 4k or 8k videos but it depends on the GPU you choose to install inside the enclosure.  The GPU acceleration will help save your time and increase your workflow. The lack of extra ports on the Breakaway Box 750 only means Sonnet Wants you to buy the Breakaway Box 750ex it has all the needed ports. Lack of versatile port on the enclosure is one of the biggest deal breakers and it will surely be a reason why people might go for other enclosures. The fan inside the enclosure does a lovely job by keeping it quite foe the most part and it only make noises. You will experience faster speed while editing videos using software’s like adobe premiere pro, or DaVinci resolve. Most people that use intel-based MacBook’s normally use eGPU for faster speeds this is because they lack dedicated graphics card in them.

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Here are 6 key points for selecting the Sonnet eGPU Breakaway Box 750 for your laptop

Good Build Quality

The enclosure has a solid build quality it looks premium in every angle and Sonnet did a good job in constructing the enclosure. The combination of metal and aluminum sheets played out well and the rubber feet does a good job of making sure the eGPU sits well on a flat surface. It looks polished and would surely make your setup look better.

Future Proof

The enclosure work well with both medium and large sized graphics card. it supports both NVIDIA and AMD based GPUs. if you decide to buy the Breakaway Box 750 it will last for at least five years or more because you can be able to switch the graphics cards inside the enclosure. Whenever you feel the graphics card inside the enclosure is not as fast as you want you have the option to switch to a faster one.

Cross Platform

the Breakaway Box 750 supports both windows and macOS and this will be very useful for people that use both MacBook’s and Windows laptops. you can decide to keep the enclosure for both operating systems. This feature will save you money because there are some enclosures out there that work for only MacOS. Originally the eGPU technology was created to bolster the performance of MacBook’s but over the years window laptops have also benefited from the technology.

Easy to use

The enclosure is easy to use because it has plug and play feature. This makes the enclosure fun to use because the moment you plug it into your MacBook laptop it starts working. Plug and play is very important because you won’t have to deal with the stress of rebooting your laptop when you connect to the external enclosure.

Power Delivery

the enclosure is going to charge your laptop while in use because it supports 100W power delivery. This means you can charge your laptop through the thunderbolt port when connected to the enclosure. 100W is enough too charge any laptop decently be it MacBook or a windows laptop.

750 Watts Power Support

The eGPU has the capacity to power even the most demanding graphics card 750 watts has the capacity to power even the AMD Radeon VII. This also adds to the enclosure being future proof because it can support various types of graphics cards.

A Closer Look at the Sonnet eGPU Breakaway Box 750

To open the enclosure all you have to do unscrew the three screws at the back of the box. Opening the box after removing the screw is a little bit difficult and you need to be careful not to damage it. The box supports different types of GPUs including Radeon, AMD, and NVIDIA cards. To use it make sure your laptop has a thunderbolt 3 port that’s the only way the Breakaway Box 750 would work with your laptop. Sonnet made the enclosure to be aesthetically pleasing in the eye. You have to depend on the expansion slot because that is where you will get the much-needed ports and I/O. inside the box it comes with a USB C thunderbolt 3 cable but I find it short and the quality is low. For creators that are into editing, rendering and color grading on their intel-based MacBook’s the breakaway box 750 would be the right companion. It can be the single reason why their workflow improves significantly. The ability to swap out graphics cards is also very important this means you can upgrade the GPU if you feel the performance is not as fast. If you want a full list of compatible graphics card that are compatible with the Breakaway Box 750 the you should check out or reddit.

About Sonnet Breakaway Box 750 manufacturers

Sonnet have pioneered and brought to the market many innovative and award-winning products that enhance the performance of Mac, and Windows, and other industry standard computers. They are the leading providers of thunderbolt 3 to PCIe card expansion system. we manufacture products like External graphics (eGPU), pro media readers, docks and adapters, network, storage and more.

Product Specifications and Features

Dimension –8 x 13.38 x 7.25 inches

Weight – 12.62 pounds

Operating System – Windows or MacOS

Color Options – Black

Input & Output – Thunderbolt 3 Via type C                                                                               

Internal Power Supply – 750W

GPU max power support – 550W

Power Delivery – 100W

GPU type – NVIDIA, AMD, or Radeon

Description of Sonnet eGPU Breakaway Box 750

Nothing impacts gaming, videos, or graphic-intensive applications as much as a dedicated graphics card. Today’s all-in-one and notebook computers may be sleek and thin, but their modern designs with integrated GPUs comes with the lack of high-performance graphics. Sonnet’s eGPU Breakaway Box brings the power of a dedicated graphics card to your system; simply add your compatible video card of choice, connect your Thunderbolt 3 computer with the included 0.5-meter Thunderbolt 3 cable, and enjoy desktop class level gaming performance and video acceleration in your favorite graphic applications.

Pros of the Sonnet eGPU Breakaway Box 750

Multi-platform – the eGPU works on both windows and mac operating systems and the feature is very important. Depending on the operating system you are using you can confidently depend on the enclosure. If you are using a MacBook however, you need to pay attention to the graphics card you intend to buy because not all GPUs work on apple MacBook’s. NVIDIA cards are not compatible on macOS bot they are compatible with Windows laptops.

Supports Power Delivery – the enclosure supports 100W power delivery and if you plug it into your laptop it will charge via the thunderbolt 3 port while in use. 100 watts of power is enough to charge any type of MacBook laptop at an appropriate speed. there are some premium enclosures out there that offer less than 100 watts and cost more in terms of price.

Premium Build – the build quality of the breakaway box 750 is solid it comes with a combination of metal and aluminum sheets that makes it rock solid. My only issue with the build is that when opening the enclosure, you have to struggle a little bit. I feel they should have adopted a rail system like we have on the Razer Core X.

High Graphics Performance – the enclosure supports various types of graphics card and it also has a 750W power support. it has the ability to handle power hungry graphics cards and they will work just fine. Because of the versatility of the box you can swap out various types of GPUs inside the enclosure. This is one of the major reasons why you should consider buying the enclosure it has what it takes to last long.

Cons of the Sonnet eGPU Breakaway Box 750

Lack of ports – the Breakaway Box 750 has only one thunderbolt 3 port and a power connection port. there are some cheaper options out there that offers more ports needed for connecting other peripherals. You have to depend on the PCIe expansion slot to get extra connection ports. The GPU you decide to use inside the enclosure will determine the number of extra port and I/O you will get.

Difficult to open – I find this to be a problem because you can’t just take off the cover easily or slide open like you do with other external enclosures. You have to struggle after taking off the screws at the back of the enclosure.


Does it come with a Graphics card?

No, it doesn’t come with a GPU you have to shop for the graphics card separately after buying the enclosure. This is one of the reasons why people stay away from buying eGPU. You end up spending what can build a desktop PC.

Does it work with the RTX 3090?

Yes, it does but the graphics card is not compatible with macOS so it wont work on MacBook laptops.

Does it come with power supply?

Yes, the enclosure has 750W of power supply and it is enough to power most types of GPUs.

Rounding Up

The Sonnet eGPU Breakaway Box 750 is a firm competitor in the eGPU world. I find the price to be reasonable and it comes with all the needed features that makes it compete with some enclosure like the Core X by Razer. If you want something better you can check out the Breakaway Box 750ex it is similar with the Breakaway Box 750 with some slight improvements like the needed extra ports.

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