G-Dock EGPU Dock with 800W PSU and OCuLink+USB4 - External GPU Dock

In this review the G-Dock EGPU Dock is examined for users who need a compact, powerful external GPU solution that supports most desktop graphics cards. The single biggest reason to consider this dock is its integrated 800W power supply which delivers up to 600W to a GPU, allowing high-power cards to run without an external PSU. The review covers compatibility, build, and practical limits so readers can decide if it suits their laptop or desktop workflow.

Key Features

• 800W built-in PSU: Provides stable power and up to 600W for the installed GPU so most modern cards can run without an extra power brick.
• OCuLink + USB4 interface: Offers a full 64Gbps effective bandwidth using PCIe 4.0 x4 lanes for low-latency external GPU connectivity on compatible hosts.
• Open metal chassis: The aluminum profile center frame and open design improve cooling and accommodate an unlimited card length for large GPUs.
• TGX hot swap compatibility: Supports hot-swapping on TGX-enabled devices for quick device changes without powering down those systems.
• Compact footprint: At roughly 22.5 x 11 x 6cm and 1.5KG, the dock is small enough to fit on a desk while still housing full-size graphics cards.

Who It's For

The G-Dock is best for laptop users who have an OCuLink or TGX-capable port and want to add desktop-class GPU performance for gaming, content creation, or GPU-accelerated compute without opening their laptop. It is also a fit for desktop users who need an external enclosure to test or move GPUs quickly between systems that support OCuLink.

It is not for users whose systems lack an OCuLink port or who expect full PCIe x16 bandwidth; compatibility requires the specific OCuLink interface and the dock does not support the 5090 or 5090D GPU models. Buyers who need plug-and-play via more common ports should look for USB-C/Thunderbolt alternatives.

Pros & Cons

Pros

• Robust integrated 800W power supply that supports high-power GPUs up to 600W.
• High-bandwidth OCuLink + USB4 interface delivering PCIe 4.0 x4, suitable for demanding GPU tasks.
• Open metal design and aluminum center frame for better cooling and unlimited card length support.
• Compact and lightweight for an external GPU enclosure, making it easier to transport or fit on a crowded desk.

Cons

• Requires a device with an OCuLink port and the OCULINK connection is not hot-pluggable, limiting compatibility and convenience for many laptops.
• Does not support 5090 and 5090D series GPUs, so check card compatibility before purchase.

Specifications

Brand	GTBOX
Power Supply	Built-in 800W
Max GPU Power	Up to 600W (not support 5090, 5090D)
Interface	1x OCuLink + USB4 (OCuLink PCIe 4.0 x4, 64Gbps)
Size	22.5 x 11 x 6 cm
Weight	1.5 KG
OS Support	Windows and Mac (Win11 22H2 or higher recommended)

Our Verdict

The G-Dock EGPU Dock is a strong value for users with compatible OCuLink or TGX systems who need a compact external enclosure that can feed high-end GPUs with up to 600W. Its 800W internal PSU, open metal chassis, and USB4-enabled OCuLink connectivity make it a practical choice for creators and gamers who can confirm host compatibility. Buyers without an OCuLink port or those needing broader plug-and-play support should consider other docks.

Frequently Asked Questions

Does the dock include a GPU?
The GPU is not included; the box contains the dock, OCuLink cable, USB cable, power supply, and two switch cables.

Can I hot-plug the OCuLink cable?
No, the OCULINK interface does not support hot-plugging; power should be off before unplugging or plugging that cable and its lock must be released when disconnecting.

Will any GPU fit?
The enclosure supports unlimited card length physically and up to 600W GPU power, but it does not support 5090 or 5090D models, so verify card model and power needs first.