


AMD Radeon RX 7800M in OneXGPU 2 outperforms Nvidia RTX 4070 Laptop GPU
OneXGPU 2 is the first eGPUto feature the Radeon RX 7800M, a GPU that even AMD hasn't announced yet. As revealed by One-Netbook, the manufacturer of the external graphics card solution, the new AMD GPU is based on RDNA 3 architecture and has the Navi 32 silicon.
When it comes to how well it performs, One-Netbook has revealed the 3DMark Time Spy benchmark score of OneXGPU 2. Per the benchmark run, the Radeon RX 7800M inside the eGPU scores 15,806 points. This is higher than the score of the Nvidia RTX 4070 Laptop GPU.
For reference, in our benchmark run, the Nvidia RTX 4070 Laptop had a max score of 13,391 points. This makes the AMD Radeon RX 7800M about 16% faster. Worth noting that the OneXGPU 2 relies on an OCuLink connection, which can cut up to 23% from the actual performance.
So, if the Radeon RX 7800M was inside a laptop instead of an eGPU, the benchmark scores would've been higher. That would've eventually widened the performance difference between the new AMD GPU and the Nvidia RTX 4070 Laptop GPU. This tells a different story than the desktop variants of the GPUs.
More specifically, the desktop Radeon RX 7800 XT and RTX 4070 deliver identical performance in raster benchmarks. As for how the RX 7800M compares against its desktop variant, we found the desktop GPU to offer a max score of 20,147 points in 3DMark Time Spy. So, compared to the score obtained from the eGPU, there's around a 24% performance difference.
But again, that 3DMark Time Spy score is throttled by the OCuLink connection, and it can be higher if the GPU was tested as a dedicated graphics for a laptop. So, it seems like the RX 7800M-equipped gaming laptops could be a better option than the ones with RTX 4070 (Legion Slim 5 16" Gen 8 curr.$1,299.99 on Best Buy).
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