M5/M6 multi-die packaging
M3 introduced UltraFusion die-to-die. M5+ candidates target glass interposer for 2.5D + better thermal + lower pitch. ChipletOS UCIe cal head 81.6% gap closure on the chiplet-to-chiplet regime (v2 retrain).
Apple’s vertically-integrated silicon strategy — M-series chiplets, Vision Pro micro-OLED-on-glass, post-Trainium custom AI accelerators — all converge on glass substrates for thermal + pitch + cost reasons.
M3 introduced UltraFusion die-to-die. M5+ candidates target glass interposer for 2.5D + better thermal + lower pitch. ChipletOS UCIe cal head 81.6% gap closure on the chiplet-to-chiplet regime (v2 retrain).
Vision Pro 1 used Sony micro-OLED on glass. Vision Pro 2 candidates need higher-density TGV-routed display drivers. ChipletOS golden_dense_array (Z₀=33.30 Ω, p=120 µm characterized) covers the constrained-pitch routing.
Apple Intelligence shipped on M-series CPU/GPU/NE. Next-gen LLM-class accelerators (Apple-designed, TSMC-fabricated) target HBM4-class memory stacks on glass interposer. ChipletOS HBM4 cal head 90.3% gap closure (v2 retrain) — 6/6 regimes deployed, avg 74% gap closure.
Apple’s differentiation is vertically-integrated silicon (CPU + GPU + NE + ISP + custom IO). The one layer Apple still depends on third-party EDA for is packaging signoff — Cadence Sigrity / Synopsys SiP / Ansys HFSS. ChipletOS unifies that signoff across all 5 vendors with one workflow lock.