Sonnet launches Thunderbolt 5 eGPU with 850W PSU and integrated dock for professional creatives

Sonnet Technologies unveils the Breakaway Box 850 T5, a high-powered external graphics enclosure with Thunderbolt 5, designed to enhance GPU performance for Windows 11 laptops and small desktops, featuring a built-in dock and a substantial 850-watt power supply.

Sonnet Technologies has launched the Breakaway Box 850 T5, a Thunderbolt 5 external graphics enclosure aimed at Windows 11 laptops and small desktop systems that need access to desktop-class GPUs. The company says the unit supports current NVIDIA and AMD cards and is built around a temperature-controlled fan designed for quiet operation under load.

The enclosure combines GPU expansion with an integrated Thunderbolt 5 dock. Sonnet says it provides an 80 Gbps connection, one Thunderbolt or USB peripheral port, three 10 Gbps USB-A ports and a 5 Gigabit Ethernet port, allowing a compatible computer to reach graphics and peripherals through a single cable. That makes it especially relevant for users working in video editing, 3D rendering, colour grading, visual effects and local AI tasks, where laptop GPUs are often constrained by power and cooling.

A key point is the included 850-watt power supply. According to Sonnet and retail listings, that gives the Breakaway Box 850 T5 enough headroom for large, triple-width cards and removes the need for buyers to source a separate PSU, which is a common limitation in some eGPU products. Thunderbolt industry information also indicates support for a broad range of recent NVIDIA GeForce RTX and AMD Radeon cards, underscoring the enclosure’s focus on high-end professional use.

Sonnet says the Breakaway Box 850 T5 is available now at a suggested retail price of $599.99. The product is positioned less as a lifestyle accessory than as a practical expansion box for users who want to upgrade graphics performance without replacing their main computer.