Nvidia's RTX Spark laptops use the same chip as the DGX Spark, but they get faster memory and features the DGX Spark doesn't
They're very similar, but also very different.
Nvidia's RTX Spark laptop chipset shares the same core components as DGX Spark, but with improved memory speed and additional features absent in the DGX model. Testing an HP OmniBook Ultra 16 running the RTX Spark revealed a closer performance gap than the spec sheet predicted, particularly in memory bandwidth-dependent tasks. The laptop's 9,400 MT/s memory speed provided roughly 300 GB/s of theoretical bandwidth, outpacing the 8,533 MT/s on DGX Spark by nearly 18%.
GPU read tests showed the RTX Spark reading a 2 GB buffer at 282.9 GB/s, significantly surpassing the 239.8 GB/s on DGX Spark. CPU performance also favored the RTX Spark, with 142.5 GB/s under full load versus 116.2 GB/s on the DGX. Despite potential factors such as memory timings, fabric clock speeds, drivers, or OS scheduling, the memory speed disparity proved to be a significant differentiator between the two devices.
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