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ASUS ROG XG Mobile vs Sonnet eGFX Breakaway Box 650: Comparison
ASUS ROG XG Mobile vs Sonnet eGFX Breakaway Box 650: the connection standard difference
The first real difference is connection standard: ASUS ROG XG Mobile Proprietary against Sonnet eGFX Breakaway Box 650 Thunderbolt 3.
Who each one is for
Take the ASUS ROG XG Mobile for existing ROG Flow X13/X16/Z13 owners wanting the single fastest available eGPU performance with zero setup complexity. It is the wrong buy for buyers with any other laptop brand, genuinely zero compatibility outside the ROG Flow lineup. The Sonnet eGFX Breakaway Box 650 suits RTX 3060/3070-class double-wide card builds on Thunderbolt 3. It is equally the pick for Mac users wanting official Apple eGPU certification on a mid-tier budget. It is not the one for RTX 3080 Ti/3090 or RTX 40-series cards that want more PSU headroom. Our rating of the ASUS ROG XG Mobile (9/10): the fastest ultra-compact eGPU available, an integrated RTX 5070 Ti with proprietary low-latency connectivity, limited exclusively to ROG Flow devices. Our rating of the Sonnet eGFX Breakaway Box 650 (7/10): the right-sized Sonnet box for mid-range Thunderbolt 3 cards, officially Mac-certified.
ASUS ROG XG Mobile vs Sonnet eGFX Breakaway Box 650 price
The ASUS ROG XG Mobile asks 496% more, $2,674 against $449 for the Sonnet eGFX Breakaway Box 650.
Frequently asked questions
Which is cheaper, ASUS ROG XG Mobile or Sonnet eGFX Breakaway Box 650?
The ASUS ROG XG Mobile asks 496% more, $2,674 against $449 for the Sonnet eGFX Breakaway Box 650.
Specs and benchmarks
These products are in different categories and don't share enough specifications to compare meaningfully.
Which one should you pick?
Choose ASUS ROG XG Mobile if you already have it on hand or find it at a lower price.
Choose Sonnet eGFX Breakaway Box 650 if you already have it on hand or find it at a lower price.
Price comparison
| Retailer | ASUS ROG XG Mobile | Sonnet eGFX Breakaway Box 650 |
|---|---|---|
| Consumercarts listing | $2,674.00 View on Consumercarts listing | |
| Amazon | $449.00 View on Amazon |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Verdict
ASUS ROG XG Mobile
9 / 10 Expert Rating
The fastest ultra-compact eGPU available, an integrated RTX 5070 Ti with proprietary low-latency connectivity, limited exclusively to ROG Flow devices.
Sonnet eGFX Breakaway Box 650
7 / 10 Expert Rating
The right-sized Sonnet box for mid-range Thunderbolt 3 cards, officially Mac-certified.


