Nvidia demonstrates Rubin Ultra tray, the world's first AI GPU with 1TB of HBM4E memory — new chips will slot into Kyber racks by ashilov@gmail.com (Anton Shilov) from Latest from Tom's Hardware on 2026-03-17 10:20 (#749SV) Nvidia shows off its next-generation Kyber rack-scale solution to be powered by Rubin Ultra GPUs with four compute chiplets and 1 TB of HBM4E memory per package.