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Rubin Ultra HBM Specs in Flux as Supply Tightens

Last Modified

2026-07-31

Update Frequency

Aperiodically

Format

PDF

TrendForce: NVIDIA still weighs Rubin Ultra HBM options as tight DRAM supply pushes suppliers toward much higher prices.

Key Highlights

Specs Undecided: NVIDIA weighs lower-spec options including HBM4e 8hi for Rubin Ultra.
Trade-off: I/O gain prioritized over shipment scale.
Four Options: Capacity traded for supply certainty.
Decision Drivers: 2H26 verification sets final specs.
Prices to Rise: Supply lags demand favoring suppliers.

Table of Contents

Introduction
NVIDIA Prioritizes I/O Speed and GPU Shipment Growth for Rubin Ultra, Rendering HBM Specs Adjustable
- Four Possible HBM Configurations for Rubin Ultra Platform
Industry Consensus Anticipates Structural Shortages and Price Hikes; Progress in HBM4e Qualification and Suppliers' Wafer Allocation Strategies Dictate Final Specs

<Total Pages: 4>

Four Possible HBM Configurations for Rubin Ultra Platform

Category: AI/HBM/Server

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