The idea is simple: maintain HBM4 performance while drastically reducing the reliance on expensive, supply-constrained a…
SemiAnalysis Twitter · SemiAnalysis (@SemiAnalysis_) · 2026-07-03
SemiAnalysis introduces SPHBM4 as a memory interface that achieves HBM4-level bandwidth on standard substrates by reducing pin count to one-fifth of traditional HBM while quadrupling signal speeds to 32 Gbps and extending connection distance to 20mm.
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Extraction
Topics: sphbm4hbm4ai-chip-packagingsemiconductor-technologysubstrates
Claims
- SPHBM4 reduces pin count to one-fifth of traditional HBM while quadrupling signal speeds to 32 Gbps to maintain equivalent bandwidth.
- The reduced pin count allows SPHBM4 to operate on standard substrates, eliminating dependence on expensive advanced packaging.
- SPHBM4 extends memory connection distance to 20mm, enabling superior thermal management compared to traditional HBM.
- SPHBM4 is a major structural win for the substrate industry by decoupling HBM from supply-constrained advanced packaging.
Key quotes
maintain HBM4 performance while drastically reducing the reliance on expensive, supply-constrained advanced packaging.
By slashing the pin count to 1/5th but quadrupling signal speeds to 32 Gbps. This allows HBM-level bandwidth using standard substrates, while pushing the connection distance out to 20mm for vastly superior thermal management.