# d-Matrix presents early-silicon 3D DRAM inference accelerator

_Wednesday, August 26, 2026 at 8:00 AM EDT · AI · Latest · Tier 2 — Notable_

![d-Matrix presents early-silicon 3D DRAM inference accelerator — Primary](https://cdn.mos.cms.futurecdn.net/wcqgQCPFUu5759juwXWcs8-1920-80.jpg)

d-Matrix presented its Raptor accelerator at Hot Chips 2026, pairing a TSMC 4nm compute die face-to-face with a custom DRAM die.

The company said the one-high stack provides 32GB per card and 100 TB/s of bandwidth, while its accompanying ISCA paper projects about 4.7 times the throughput per card of HBM-based designs. Chief executive Sid Sheth previously said Raptor is slated for a 2027 launch, but the company gave no firm delivery date, price or volume information at the conference.

## Sources

- [Tom's Hardware](https://www.tomshardware.com/tech-industry/semiconductors/d-matrix-stacks-its-ai-accelerator-directly-on-custom-dram-for-100-tbs-per-card)

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Retrieved: 2026-08-26T17:41:09.856Z
Publisher: Tech & Business (techandbusiness.org)