External GPU Enclosure Sonnet SON-GPU-750WEX-TB3 Black

The Sonnet SON-GPU-750WEX-TB3 is an external GPU enclosure that lets you add a high-performance desktop or workstation graphics card to a Thunderbolt-equipped computer. Housed in a compact black chassis, it includes a 750 W internal power supply, supports GPU cards drawing up to 375 W, and provides Thunderbolt 3 connectivity and USB Power Delivery up to 85 W for connected devices. The enclosure is supplied with AC, Thunderbolt, and GPU-750WEX-TB3 cables and measures 185 mm × 340 mm × 202 mm with a weight of 3.2 kg.

Advantages

This Sonnet external GPU enclosure provides a simple single-cable connection to transform a laptop or compact desktop into a capable graphics workstation. The 750 W power supply leaves headroom for current high-power GPU cards and future generations, avoiding power-related compatibility limits. It supports popular GPU chipsets from AMD and NVIDIA on Windows systems and is designed to accept double-width, full-length cards for maximum card choice. Included cables and a Thunderbolt 3 connection enable fast data transfer and convenient setup.

Suitable for

Key specifications

How to use

Install a compatible double-width PCIe GPU card into the enclosure according to the manufacturer’s instructions, connect the enclosure to mains power using the supplied AC cable, and then attach the Thunderbolt 3 cable between the Sonnet enclosure and your Thunderbolt-equipped computer. If desired, connect a USB-C device to use USB Power Delivery up to 85 W. Power on the enclosure and the host computer; install any required GPU drivers for your operating system (note: macOS officially supports AMD cards in eGPU setups, while Windows supports AMD and NVIDIA). After drivers are installed, configure your applications to use the external GPU where applicable.

Recommendations

Use full-length, double-width GPU cards rated at or below the supported 375 W per card and ensure your host system supports Thunderbolt eGPU operation. Keep firmware and GPU drivers up to date, provide adequate ventilation around the enclosure, and verify OS compatibility for your chosen GPU vendor before purchase.