
eGFX Breakaway Puck RX 570 (Portable eGPU System)
Part No. GPU-RX570-TB3-S
Work Hard. Play Harder. External GPU to Go!
Sonnet's eGFX Breakaway™ Puck is a portable, high-performance, all-in-one external GPU for Thunderbolt™ 3 computers (such as Ultrabooks and All-in-One computers) that provides accelerated graphics and multi-display connectivity. With a Puck connected to a supported computer, you drastically accelerate popular graphics-intensive games and pro applications anywhere – at a friend's house for a gaming LAN party or at work, rendering the latest video production.
Pack a Puck. It's Ready to Go.
The eGFX Breakaway Puck conveniently packs with your notebook in a backpack or computer bag when you need GPU acceleration while on the go. An included portable power adapter and 0.5-meter Thunderbolt 3 (40Gbps) cable powers and connects the Puck to your computer. The Puck provides 60W of Power Delivery, which means it will power and charge most notebooks while connected, even when not in use, allowing you to leave your computer’s power brick behind.
Powerfully Small
Measuring a compact 6 inches wide by 5.1 inches deep by 2 inches tall, the eGFX Breakaway Puck has a minimal footprint on the desktop, and is the right size to compliment your thin/light notebook. The Puck houses your choice of a value-oriented Radeon RX 560 or a ultra-powerful Radeon RX 570 graphics video card. An integrated fan helps keep everything cool. Three DisplayPorts and one HDMI port provide ample display support. A Thunderbolt 3 (40Gbps) port provides connectivity between the Puck and your computer.
Zero Desktop Footprint with PuckCuff
Using Sonnet's PuckCuff, an optional VESA Mounting Bracket Kit, you can free up desk space and mount the eGFX Breakaway Puck to the back of a monitor with open VESA mounting holes (VESA 75 and Vesa 100 hole patterns supported).
Multi-Display Graphics Dock for Ultrabooks
With its three DisplayPort ports and one HDMI port, the eGFX Breakaway Puck leverages AMD’s Eyefinity™ multi-display technology to support up to four 4K displays with its single Radeon GPU! With the Puck connected as a multi-display graphics dock, there’s no need to compromise between the super-light notebook you want and the number of displays you need on your desktop.
AMD Eyefinity multi-display technology supports up to four 4K displays configured for the perfect gaming, productivity, and entertainment setups
Easy Connections
eGFX Breakaway Puck supports AMD XConnect™ technology, enabling easy connection and disconnection of the Puck without having to power cycle your computer.
Smooth Gameplay
AMD Radeon™ FreeSync™ technology puts an end to lagging video performance and gaming with fluid and artifact-free performance at virtually any frame rate. FreeSync technology resolves the communication issues between processor and monitor, eliminating image tears and choppiness for effortlessly smooth gameplay.
eGFX Breakaway Puck Radeon RX 570: Powerfully Portable Graphics Acceleration
Sonnet's Breakaway Puck boost the graphics performance of an eGFX-compatible computer by connecting a high-performance portable GPU card via a Thunderbolt 3 port. Work hard. Player harder. Pack a Puck for portable GPU performance no matter where you go.
eGFX Breakaway Puck Radeon RX 570 Key Features:
- Radeon RX 570 GPU (built-in)
- Most Powerful Breakaway Puck (delivers smooth gaming at even higher resolutions and frame rates)
- Best for Portable GPU Acceleration for Pro Video Applications (such as DaVinci Resolve and Adobe® Premier)
All eGFX Breakaway Pucks Feature:
- Small and Highly Portable Design
- Provides 60W of Power Delivery
- Three DisplayPorts
- One HDMI Port
- One Thunderbolt 3 Port
- One 0.5-meter Thunderbolt 3 Cable
- One power Adapter and Cord
- Optional VESA Mounting Bracket Kit (PuckCuff)
- AMD Eyefinity Multi-display Technology (supports up to four 4K displays)
- AMD FreeSync™ Technology (supports a dynamic refresh rate aimed at reducing screen tearing)
- AMD XConnect Technology (enables easy connection and disconnection from computer)
- 2-year Product Warranty
- Free Lifetime Customer Technical Support
- Designed in the USA
Mac and Windows Compatibility
Mac® Compatibility
- Mac with Thunderbolt 3 Ports and macOS 10.13.6+
- MacOS Mojave Compatible
Windows® Compatibility
- eGFX-enabled Windows PC with a Thunderbolt 3 Port
- Windows 10 (64-bit Edition Version 1809 or greater)

eGFX Breakaway Puck Models Comparison
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eGFX Breakaway Puck Radeon RX 560 Best value for gaming portability and as a graphics dock for multi-display support |
eGFX Breakaway Puck Radeon RX 570 High-performance, portable eGPU system delivering best GPU acceleration for gaming and pro video applications |
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Graphics Card | Radeon RX 560 | Radeon RX 570 |
Video Memory | 4 GB GDDR5 | 4 GB GDDR5 |
DisplayPorts | Three | Three |
HDMI Ports | One | One |
Thunderbolt 3 Ports | One | One |
Thunderbolt 3 Cable | 0.5-meter Thunderbolt 3 cable (included) | 0.5-meter Thunderbolt 3 cable (included) |
Notebook Charging Power Delivery | Up to 60W | Up to 60W |
Power Adapter | Universal 160W, 100-240V AC, 50-60 Hz |
Universal 220W, 100-240V AC, 50-60 Hz |
Warranty | 2-year | 2-year |
Supported Technologies | ||
AMD Eyefinity Technology | Yes | Yes |
AMD FreeSync Technology | Yes | Yes |
AMD XConnect Technology | Yes | Yes |
HDC 2.2 | Yes | Yes |
HDR (High Dynamic Range) | Yes | Yes |
DirectX® 12 | Yes | Yes |
Intelligent Fan Control | Yes | Yes |
OpenCL 2.0 | Yes | Yes |
OpenGL 4.5 | Yes | Yes |
Comparison | ||
Memory Bandwidth | 112 GB/s | 224 GB/s |
Floating-point Performance | 2,611 GFLOPS | 5,095 GFLOPS |
Texture Rate | 81.6 GTexel/s | 159.2 GTexel/s |
Pixel Rate | 20.4 GPixel/s | 39.81 GPixel/s |
Shading Units | 1,024 | 2,048 |
Texture Mapping Units | 64 | 128 |
Render Output Processors | 16 | 32 |
Compute Units | 16 | 32 |
PassMark Score | 4,703 | 7,223 |
WARNING: California's Proposition 65
Product specifications and information subject to change without notice. Computer hardware and accessories featured in photos that are not included with product are shown for illustration purposes; items sold separately.

View eGFX Breakaway as a Portable eGPU Gaming Solution
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Watch the eGFX Breakaway Puck as a Powerful and Portable Gaming eGPU
-- USER REVIEW -
Get a HUGE Graphics Boost on a 2018 Mac mini with a Sonnet eGPU eGFX Breakaway Puck 570