Sonnet eGFX Breakaway Box

Sonnet eGFX Breakaway Box
  • 1 x PCIe 3.0 x16 Slot
  • Thunderbolt 3 Connectivity
  • Built-in 550W Power Supply
  • Two 8-pin (6+2pin) power connectors
  • Full-Length, Double-Width Support
  • Large Variable-Speed Fan
  • Compatible with Windows and Mac Systems
  • Starting at $299

    System Core
    Graphics Card (NVIDIA)

    Graphics Card (NVIDIA)

    Choose the compatible GPU from the list and make sure you have a compatible Mac or Windows PC.
    NVIDIA GPUs are for Windows PC/laptops only (no drivers for macOS)

    Apple Mac requirements:
    • Mac with Thunderbolt 3 ports.
    • macOS 10.13.6 and higher.
    • macOS Catalina compatible.

    Windows PC/laptops requirements:
    • Windows PC with a Thunderbolt 3 port
    • GPU card use requires an eGFX-enabled Windows PC
    • Windows 10 (64-bit Edition, Version 1809 or greater)

    Sonnet model

    Sonnet model

    Cables and adapters

    Cables and adapters

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    Sonnet eGFX Breakaway Box 550W Power supply

    • Part No. GPU-550W-TB3
    • eGFX Breakaway Box 550
    • Equivalent to 600W recommended
    • Two 8-pin (6+2pin) power connectors
    • Supports up to 375W card
    • Provides laptop charging up to 87W


    • Warranty 1-year
    • Form Factor Desktop Thunderbolt 3 to PCIe card expansion system
    • External Connectors One Thunderbolt 3 (USB-C), Power (C14-type)
    • Expansion Slot One PCIe 3.0 slot, x16 Mechanical, x4 Electrical (Thunderbolt 3 Spec)
    • PCIe Card Supported One full-length, full-height, double-width PCIe card
    • Liquid Cooling (Liquid Cooling Support) Supports 120mm Water Block Coolers
    • Input Power Universal 110-240V AC, 50-60 Hz
    • Eco-Friendly Power Management See video for description
    • Operating Temperature 0˚C to 35˚C (32˚F to 95˚F)
    • Dimensions (WxDxH) 7.25 x 13.38 x 8 in. (18.5 x 34.0 x 20.2 cm)
    • Weight 7.1 lbs (3.2 kg)
    • RoHS Compliant Yes
    • Package Contents: eGFX Breakaway Box system, Power cord, 0.5-meter Thunderbolt 3 (40Gbps) cable, Documentation
    • Note: PCIe cards sold separately

    Specifications subject to change without notice

    Mac Compatibility

    • Mac with Thunderbolt 3 ports
    • Mac with a Thunderbolt 2 or Thunderbolt port with an Apple Thunderbolt 3 (USB C) to Thunderbolt 2 Adapter
    • macOS 10.12.6+
    • GPU card use see Tech Note 2

    Windows Compatibility

    • PC with a Thunderbolt 3 port (GPU card requires an eGFX-enabled Windows PC)
    • Windows 10 (64-bit Edition Version 1703 or greater)

    Technical Notes

    While the eGFX Breakaway box features a 40Gbps Thunderbolt 3 interface, some computers equipped with Thunderbolt 3 use an x2 PCIe lane implementation of Thunderbolt 3 technology that limits PCIe performance to 20Gbps. Find more computer information here. Full performance also requires the use of the included Thunderbolt 3 (40Gbps) cable, or other Thunderbolt 3 (40Gbps) cables; look for the Thunderbolt icon AND the number 3 on the connector housings to identify these cables.
    macOS High Sierra has only beta support for connection of GPU cards over Thunderbolt and GPU card drivers are not yet officially Thunderbolt compatible for macOS. For more information, see Sonnet Support Library.
    Choose eGFX Breakaway Box model that supports the power requirement of the chosen card.
    Power adapter cable for Avid Pro Tools|HDX card sold separately.

    Full Product Details and Compatibility Info »
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