ASUS ROG XG Mobile

Remains the fastest ultra-compact eGPU on the market, powered by an integrated NVIDIA GeForce RTX 5070 Ti. Uses ASUS's high-bandwidth Thunderbolt 5-based proprietary connector, delivering significantly lower latency than traditional eGPU enclosures — a genuine architectural advantage from bypassing the generic Thunderbolt protocol overhead standard enclosures carry. Delivers the best performance of any current eGPU option specifically because the GPU is integrated and purpose-matched to the connector, rather than being a generic enclosure accepting any third-party card.

The only catch: exclusively compatible with ROG Flow devices (Flow X13, X16, Z13) sharing the same proprietary design — genuinely zero compatibility with any other laptop brand or model. As an all-in-one portable eGPU dock, the graphics processor is permanently installed and cannot be upgraded in the future, a real long-term tradeoff against upgradeable enclosures where the GPU itself can be swapped for a newer model later. Each enclosure serves different needs, from budget docks to this $2,674 option for those wanting the absolute best performance with zero compromises.

Versus the Razer Core X V2 or Sonnet Breakaway Box — those upgradeable enclosures let a buyer swap in a newer desktop GPU in the future, a real flexibility this ASUS's permanently-integrated GPU doesn't offer, in exchange for this XG Mobile's superior current-generation performance and lower latency.