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$DRAM OpenAI and Broadcom Unveil LLM-Optimized Intelligence Processor
Key Available Data on HBM for OpenAI's Titan Chip
Samsung Deal: Up to 800 million gigabits of 12-layer HBM4 memory supplied exclusively for the first-generation Titan accelerator. This represents roughly 7% of Samsung’s projected full-year HBM output and supports initial deployments.
Memory Configuration: 12-layer HBM4 stacks provide higher capacity and bandwidth than previous HBM3E generations. Reports and patents indicate aggressive designs, potentially supporting a high number of stacks per chip (up to 20 in some referenced architectures) using advanced packaging to maximize memory for inference workloads.
Scale Context for 10 GW: 10 gigawatts represents massive infrastructure. Each modern AI accelerator pairs with hundreds of GB of HBM for efficient large-model inference. Across the full rollout (H2 2026 through 2029), total HBM demand likely reaches tens to hundreds of thousands of stacks, with the Samsung allocation covering an initial phase. Additional supply from Samsung, SK Hynix, and others will support later generations.
Partnership: OpenAI and Broadcom have a multi-year strategic collaboration (ongoing for about 18 months as of the announcement) to co-develop custom AI accelerators and networking systems optimized for large language models (LLMs), particularly for inference workloads.
Scope: Plans to deploy 10 gigawatts of OpenAI-designed AI accelerators. OpenAI designs the chips and systems; Broadcom handles development, manufacturing aspects, and provides Ethernet networking solutions for scale-up and scale-out in AI clusters.
Timeline: Chips expected to ship starting in late 2026 (with initial deployments targeted for H2 2026). A second generation is planned on more advanced process nodes.
Focus: The processor is tailored for efficient LLM inference, addressing surging demand for AI compute. It builds on Broadcom's expertise in custom ASICs, networking (Ethernet), and high-performance silicon. This helps reduce reliance on third-party GPUs (e.g., Nvidia) for OpenAI's workloads...