Chinese company Topfeel is coming up with a product that could change the market for external graphics solutions. The new Topfeel G1 OCuLink GPU Dock allows you to connect a desktop graphics card to a mini PC or laptop using the high-speed OCuLink (PCIe 4.0×4) interface.
For users who want to get the performance of a desktop PC without the need for a large enclosure, this is a breakthrough solution. With its low price, universal compatibility and direct PCIe transfer, the Topfeel G1 can appeal to anyone looking to combine mobility and performance in one system.
What is an eGPU dock and why OCuLink is revolutionary
External graphics docks (eGPU docks) are nothing new, but most solutions to date have used Thunderbolt 3/4 or USB4 interfaces. While these offer convenient connectivity, they limit the throughput and therefore the performance of the graphics card – often by as much as 20-30%. The Topfeel G1 OCuLink GPU Dock eliminates this problem. The OCuLink (PCIe External Cable Standard) interface allows data to be transferred directly over PCI Express lines, without converters and unnecessary layers. In practice, this means almost 100% performance over a traditional PCIe slot in a desktop PC.
This makes the Topfeel G1 the ideal choice for gamers, creatives and AI developers who use mini PCs, NUCs or powerful laptops and want to harness the full potential of NVIDIA GeForce RTX or AMD Radeon RX graphics cards.
Design and construction: simplicity and modularity
Topfeel offers two models – the G1 and the G1 Pro.
The basic Topfeel G1 has an open frame design, allowing it to accommodate virtually any graphics card up to 320mm in length. This version is ideal for those who frequently change GPUs or test multiple cards.
Conversely, the Topfeel G1 Pro version has a closed metal frame with the ability to mount two 120mm fans to improve airflow and cooling. It looks cleaner, is quieter and looks more professional – also suitable for work environments or minimalist setups.
Both versions support the installation of ATX and SFX power supplies, although the manufacturer recommends SFX for a more compact footprint. An interesting added feature is also the ability to connect two 2.5″ SATA drives, so the dock can serve as a mini storage expansion.
Technical specifications of the Topfeel G1 OCuLink GPU Dock
Below we can take a look at the specifications of this dock together. For the price, this is one of the cheapest OCuLink solutions on the market, yet it doesn’t limit GPU performance or power functionality.
| Category | Topfeel G1 OCuLink GPU Dock |
| Interface | OCuLink (PCIe 4.0×4) |
| Power | Full-size desktop graphics cards (up to 320 mm) |
| Storage | Support for both ATX and SFX resources |
| Cooling | 2×120 mm fans (G1 Pro version only) |
| Power supply for mini PC | Power Delivery up to 140 W |
| Material | Metal construction with mesh |
| Price | Topfeel G1 – from $80 Topfeel G1 Pro – from $110 |
Compatibility, performance and practical use
The biggest advantage of the Topfeel G1 OCuLink GPU Dock is its wide compatibility with both graphics cards and mini PCs. It can work with models ranging from NVIDIA GeForce RTX 30 series to RTX 50 series, as well as AMD Radeon RX 7000 series and RX 9000 series cards. With direct PCIe 4.0×4 connectivity via OCuLink, the dock offers up to 90-95% of the performance of a traditional desktop PC, a significant shift from Thunderbolt-based solutions.
In practice, this means that if a user owns a mini PC such as an Intel NUC or ASUS ROG NUC, by connecting via OCuLink they can get performance comparable to a gaming desktop. Likewise, the dock can also be used with laptops that have an integrated OCuLink port, or with M.2-to-OCuLink adapters, extending its capabilities to older systems as well.
In terms of power, the Topfeel G1 OCuLink GPU Dock offers a great advantage – it can power not only the graphics card but also the mini PC itself, providing up to 140W of Power Delivery. Thus, the user only needs one power supply for the entire system.
The G1 Pro allows the installation of two 120mm fans to improve cooling for long gaming or workloads. The open design makes graphics card replacement and cleaning easier, while the closed variant offers a cleaner look and quieter operation.
Topfeel G1 OCuLink GPU Dock Great for:
- when gaming and 3D modelling,
- video and graphics creation,
- for AI training and GPU rendering,
- even as a storage expansion or workstation add-on.
Its biggest advantage is its versatility and efficiency – it combines performance, ease of installation and low cost, making OCuLink technology an affordable alternative for a wider audience.
The main advantages/disadvantages of the Topfeel G1 OCuLink?
- Nearly full GPU performance thanks to OCuLink
- Supports ATX/SFX power supplies and 140 W Power Delivery
- Option to add storage (2× SATA)
- Low price and compact design
- OCuLink port is not yet standard on all devices
- Open-frame G1 design may not appeal to everyone
- Limited availability outside China
Availability and price of the Topfeel G1 OCuLink GPU Dock
Both the Topfeel G1 and G1 Pro are only available in the Chinese market for now, but the manufacturer plans to launch them globally – probably via AliExpress or Amazon. The base model of the Topfeel G1 costs around $80, while the G1 Pro comes in at $110. At this price, it is one of the most affordable full-featured eGPU solutions with OCuLink interface, which may interest both gamers and makers looking for cost-effective performance.
Conclusion
The Topfeel G1 OCuLink GPU Dock brings full-featured graphics performance to the world of mini PCs and laptops without the need for expensive Thunderbolt solutions. It offers high throughput, easy installation, and an attractive price point to appeal to gamers and content creators alike.
If the dock also reaches the global market, it has the potential to become the new benchmark among available OCuLink eGPU solutions. We will continue to monitor the development.