Nvidia's Rubin Ultra AI Accelerator Switches to 2-Die Plan Due to Manufacturing Issues

Nvidia's Rubin Ultra AI accelerator, originally set for 2027, will switch from a 4-Die to a 2-Die design due to manufacturing issues. The change addresses challenges in advanced packaging, cooling, and memory setup. The 4-Die plan neared mask size limits, making packaging tough. Using 16 HBM4E modules also raised cooling costs. The 2-Die version may halve performance, hurting its edge against AMD's Instinct MI500 series.