Intel unveils advanced Z-memory prototype: Potential HBM competitor for AI

Amid a shortage of high-performance memory, Intel has taken an important step toward re-entering the DRAM segment. At the Intel Connection Japan 2026 event, the company — together with SoftBank subsidiary SAIMEMORY — presented the first working prototype of Z-Angle Memory (ZAM). This next-generation vertically stacked memory is positioned as a more efficient alternative to the currently dominant HBM for AI workloads and high-performance computing.

How Z-Angle Memory Works

The key innovation behind ZAM is a stepped, Z-shaped interconnect topology. Unlike traditional HBM, where connections between DRAM dies run strictly vertically, ZAM routes them diagonally. This design significantly improves heat dissipation by distributing thermal load more evenly and minimizing hotspots — a critical advantage for dense memory stacks in AI accelerators, where thermal limits often become a bottleneck.

Developers report several advantages over current HBM solutions:

• Energy consumption reduced by 40–50% due to improved thermal regulation and optimized architecture.
• Increased chip capacity of up to 512 GB, potentially two to three times greater than modern HBM modules.
• Simplified manufacturing enabled by the new interconnect structure, which could lower costs and improve production yields.

The technology builds on Intel’s work within the Next Generation DRAM Bonding (NGDB) program, supported by the U.S. Department of Energy, as well as patents and expertise from the University of Tokyo.

Roles of Intel and SAIMEMORY

Intel serves as a strategic partner, providing technologies, innovations, standards, and participating in key decision-making. SAIMEMORY — established between 2024 and 2025 as a joint effort involving SoftBank, Intel, and Japanese partners — is responsible for primary development, manufacturing, and commercialization.

The operational phase began in the first quarter of 2026. Initial prototypes are expected in fiscal year 2027 (before March 2028), while full market release is planned for fiscal year 2029. For now, the technology remains an early prototype — a proof of concept rather than a mass-market product.

Why It Matters Now

Against the backdrop of a chronic shortage of HBM — particularly HBM3E and the upcoming HBM4 — which keeps prices high and limits AI system scaling, the emergence of a credible competitor could reshape the market. ZAM promises not only higher capacity and lower power consumption but also potentially reduced manufacturing costs over the long term.

However, experts remain cautious, noting that the technology is at a very early stage. Years of testing, process refinement, and certification lie ahead before mass production becomes possible. Any price shifts in high-performance memory or a change in the balance of power toward new players, including Japan, remains a distant prospect.

In Brief

Intel and SAIMEMORY, a SoftBank subsidiary, showcased the first Z-Angle Memory prototype at Intel Connection Japan 2026 — a vertically stacked memory with diagonal interconnects designed for improved heat dissipation. ZAM is expected to offer up to 512 GB per chip, reduce energy consumption by 40–50%, and simplify manufacturing compared with HBM. Intel acts as a strategic partner, while SAIMEMORY leads development and commercialization. Prototypes are scheduled for 2027, with mass production targeted for 2029. The technology represents an ambitious challenge to HBM’s dominance in the AI era, though its real market impact is still years away.