[DC] What Changed in AI Infra — Week 2026-W24

- **NVIDIA Blackwell Ultra** dominates first Agentic AI benchmark, delivering 20x agents per MW vs Hopper, signaling a generational efficiency leap for inference-heavy workloads. - **KKR** launches Helix Digital Infrastructure with $10B, while **Adam Selipsky** (ex-AWS) leads a separate $10B AI data center venture, marking major private equity and operator buildout push. - **Google** books Intel for 3M+ TPUs in 2028 as TSMC CoWoS hits capacity wall, forcing hyperscaler to diversify supply chain; also open-sources DiffusionGemma (26B model, 1K tokens/sec on H100). - **TensorWave** raises $350M Series B for AMD-powered GPU clusters, challenging NVIDIA dominance; **Crusoe** claims 5 GW pipeline but pauses Wyoming site, indicating demand-supply friction. - **SemiAnalysis** declares pretraining dead for all but frontier labs, reinforcing shift to inference and fine-tuning; **UniSound U2** cuts token use 25%, joining top Chinese LLM tier. - **Second-order implications**: Power demand hits 175 TWh, spurring **NEMA/ASHRAE/PNNL** framework; **CATL** invests in DeepSeek (battery giant pivots to AI energy); **MIT spinoff** targets nuclear-inspired cooling for water use; **xAI** pivots Colossus to rental compute chasing 30%+ margins.