Nvidia Rubin Ultra to Feature 192GB HBM4, Capacity Significantly Reduced

The downward revision matters less as a spec sheet change than as a signal about how Nvidia is allocating scarce HBM4 supply across its roadmap, which ripples into the economics of every AI compute story built on top of it. Crypto compute narratives that lean on Nvidia generational uplifts have the most exposure here, since their pitch often assumes capacity growth arrives on schedule. Whether this reflects a deliberate segmentation choice or a supply constraint is the open question, and the next SemiAnalysis-style channel check should clarify it.