NVIDIA's RTX Spark N1X brings up to 128GB unified memory to Arm-on-Windows laptops

NVIDIA's flagship RTX Spark N1X, launching October 2026 in laptops from Asus, Dell, HP, Lenovo, Microsoft, and MSI, pairs a 6144-core Blackwell RTX GPU with a 20-core Grace CPU and up to 128GB of unified memory shared between both. Neither x86 laptop vendors nor Apple's M-series chips offer that unified capacity at this tier — directly relevant for local LLM inference, where memory ceiling often matters more than compute.