Sorry, but when it comes to chipsets, they're not even close. The DGX Spark uses a GB10 with 128 GB unified LPDDR5X memory, while the DGX Station has a GB300 with 496 GB LPDDR5X (CPU) + 252 GB HBM3e (GPU) memory. It's like Little League versus Major League, which is why the latter costs about 20 times more than the former. The fact that both run Linux is just because they're part of the same DGX family.