An open dock, ready for large GPUs
In its announcement published on 4 November, ASUS lists GeForce RTX 50, RTX PRO 6000, Radeon RX 9000 and Intel Arc among the supported families. The dock deliberately leaves the card exposed: its cooling system remains in the open air and the GPU becomes a visible part of the setup.
The dock accommodates cards measuring up to 361 × 139.3 × 93.9 mm. It is the exact model’s dimensions that need checking, not just its GPU name. The station itself measures 324.6 × 173 × 104.7 mm, before accounting for the installed card.
Another feature is the GC-HPWR connector, which can power compatible ASUS BTF 2.5 cards without a visible cable on the GPU. The manufacturer specifically names the TUF Gaming RTX 5080 BTF OC and ROG Astral RTX 5090 BTF. Conventional cards remain usable with their wired power connections.
80 Gbit/s does not mean desktop PCIe slot performance
The Thunderbolt 5 connection is rated at 80 Gbit/s in both directions. The 120 Gbit/s figure refers to Bandwidth Boost mode, which reorganises the connection for demanding video streams: it should therefore not be presented as 120 Gbit/s of PCIe throughput available to the graphics card.
Intel’s documentation also distinguishes this overall bandwidth from the 64 Gbit/s allocated to PCIe transport. These limits describe an interface, not a frame-rate gain. At this stage, none of the results in the ASUS documents consulted quantify the gap between the same card installed in a desktop tower and in this dock.
Key specifications
Item | ROG XG Station 3 |
|---|---|
PC connection | Thunderbolt 5; up to 80 Gbit/s bidirectional |
PC charging | USB Power Delivery up to 140 W |
Downstream Thunderbolt port | Up to 36 W; supports display daisy-chaining |
Front ports | 2 × USB-C at 10 Gbit/s |
Maximum graphics card dimensions | 361 × 139.3 × 93.9 mm |
Power supply to be added | SFX or SFX-L; 750 W and 80 PLUS Gold or better recommended |
Listed operating system | Windows 11 25H2 or later; macOS not supported |
Included accessory | 1 m Thunderbolt 5 cable |
The dock can also bring peripherals and displays together. ASUS specifies up to three 4K displays via daisy-chaining on the downstream Thunderbolt port. The installed card’s video outputs offer further possibilities, depending on the chosen GPU and monitors.
Check your laptop before ordering
The documentation needs careful reading: the FAQ mentions backwards compatibility with Thunderbolt 4, while the specifications require a Thunderbolt 5 port supporting external GPUs. ASUS itself recommends confirming Thunderbolt/USB4 eGPU compatibility with the PC manufacturer. Simply having a USB-C socket is therefore not enough to justify the purchase.
The recommended 750 W refers to the choice of power supply; it is not a stated continuous power draw. The price of that unit, the GPU and the station must all be added together to assess the package.
Finally, BTF compatibility here concerns the power connection. It does not, on its own, prove that every monitoring feature is present: our article on the limitations of Power Detector+ with the Z890 Hero BTF explains why these features need to be checked separately.
Key takeaways
The XG Station 3 is primarily aimed at people who want to keep their laptop while adding a fixed graphics setup at their desk. Its value will depend on the dock’s price, still absent from the documents consulted, the chosen GPU and the power supply to be added. Testing will also be needed to measure what the external connection actually delivers in games.