Microsoft Opens Preorders for Surface RTX Spark Dev Box: AI Workstation with 128GB Memory Aims at On-Device Model Inference

Microsoft has begun accepting preorders for the Surface RTX Spark Dev Box, a $5,999 desktop system built to run massive AI models locally on developers' desks without cloud dependencies. The compact workstation, which ships in November, combines an NVIDIA RTX Spark Superchip with 128GB of unified memory and delivers up to one petaflop of FP4 AI performance—enough to run models with 120 billion parameters and context windows reaching one million tokens at interactive speeds.