External GPU Enclosure Sonnet SON-GPU-750WEX-TB3 – 750W PSU, 375W GPU, Thunderbolt 3, Black

Sonnet SON-GPU-750WEX-TB3 is an external GPU enclosure with an integrated 750 W power supply and support for full‑length, double‑width graphics cards drawing up to 375 W. It connects to a host computer via Thunderbolt 3 and includes a 70 cm Thunderbolt cable plus AC power cable for quick setup. The enclosure offers USB Power Delivery up to 85 W to charge the connected laptop or compatible host, and its compact desktop footprint (185 × 340 × 202 mm) fits standard workspaces. Designed to accept desktop workstation and gaming GPU cards, the unit expands the graphics and compute capabilities of laptops and small desktops for gaming, video editing, 3D rendering and GPU‑accelerated compute tasks.

Advantages

The enclosure provides a high‑capacity 750 W internal PSU that supplies stable power to demanding GPU cards while leaving headroom for future, higher‑power models. Thunderbolt 3 connectivity delivers up to 40 Gbps link speed for low‑latency GPU communication and supports single‑cable workflows. Built for compatibility with a wide range of desktop GPU cards, the chassis supports both AMD and NVIDIA cards on supported host operating systems and accepts non‑GPU PCIe cards when needed. Included cables and a compact, quiet design make it suitable for desktop use.

Suitable for

• Accelerating laptop and compact desktop graphics performance for gaming
• Reducing render and export times in video editing and color grading
• Offloading GPU‑intensive tasks such as 3D modeling, VFX and machine learning inference
• Creating a portable eGPU workstation for content creators and designers

Key specifications

• Internal power supply: 750 W
• Maximum supported GPU card power draw: up to 375 W
• Host interface: Thunderbolt 3 (single port, 40 Gbps)
• USB Power Delivery to host: up to 85 W
• Chassis dimensions (W × D × H): 185 × 340 × 202 mm
• Color: black
• Includes: Thunderbolt 3 cable (70 cm) and AC power cable
• Supports full‑length double‑width PCIe GPU cards and many non‑GPU PCIe cards

How to use

Install a compatible PCIe graphics card into the enclosure following the manufacturer’s instructions for seating and securing the card. Connect the included AC power cable to mains power and verify the PSU switch is in the correct position if present. Use the supplied 70 cm Thunderbolt 3 cable to connect the enclosure to a Thunderbolt 3 port on the host computer. If desired, enable USB Power Delivery to supply up to 85 W to charge the host. Install or update the appropriate GPU drivers on the host operating system to ensure full functionality and performance.

Usage recommendations

Use GPU cards that comply with the stated maximum GPU power draw and double‑width form factor. For macOS hosts, prefer AMD cards as macOS supports AMD eGPUs natively; for Windows hosts, both AMD and NVIDIA cards are supported. Ensure adequate ventilation around the enclosure and place it on a stable, level surface. Keep firmware and drivers up to date for the host and GPU for best performance and compatibility.