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NVIDIA cuts HBM in Rubin Ultra due to cost surge · 3 sources tracked

By PulseAugur Editorial · [3 sources] ·

NVIDIA has reduced the High Bandwidth Memory (HBM) configuration for its Rubin Ultra system, downgrading from HBM4E 12-Hi (384GB) to HBM4 8-Hi (192GB). This decision stems from recent price hikes in HBM and DRAM, which caused memory to constitute approximately 40% of the total capital cost. By 'despeccing' the HBM, NVIDIA aims to cut costs by over 50% and reallocate capital towards networking infrastructure, such as scale-up networking for rack-to-rack interconnects. AI

IMPACT This cost-saving measure by NVIDIA may indicate broader supply chain pressures affecting AI hardware development and deployment.

RANK_REASON Significant industry move involving a major hardware vendor's product configuration change due to cost pressures.

Read on X — SemiAnalysis →

AI-generated summary · Google Gemini · from 3 sources. How we write summaries →

NVIDIA cuts HBM in Rubin Ultra due to cost surge · 3 sources tracked

How we ranked this

Signal score
17 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Significant
Significant industry move involving a major hardware vendor's product configuration change due to cost pressures.
Source corroboration
3 independent sources
Multiple independent publishers reporting the same story raises confidence that it's real and newsworthy.
Topics
infra
Editorial topic classification. Feeds into how the story surfaces on /topic/<slug> hub pages and into the per-entity coverage mix.
AI-industry relevance
High
Clearly on-topic for AI-industry coverage.
Story freshness
Breaking (< 6h)
Fresh story with cross-source coverage still developing. Ranking may shift as more sources report.

Full methodology in our editorial standards.

COVERAGE [3]

  1. X — SemiAnalysis TIER_1 English(EN) · SemiAnalysis_ ·

    The takeaway: despec is a symptom of the supply crunch, not weakening demand.

    The takeaway: despec is a symptom of the supply crunch, not weakening demand. When the industry's largest, best-positioned buyer is stripping memory content just to manage cost and availability, pricing power sits firmly with suppliers — and the shortage is broadening, not

  2. X — SemiAnalysis TIER_1 English(EN) · SemiAnalysis_ ·

    The despec cuts HBM cost by &gt;50% — even with the 2026 HBM price hike already baked in — and takes memory from ~40% to ~28% of total capital cost.

    The despec cuts HBM cost by &gt;50% — even with the 2026 HBM price hike already baked in — and takes memory from ~40% to ~28% of total capital cost. But that spend doesn't vanish. It's redirected into scale-up networking: on the NVL576 NPO SKU, scale-up triples from 4% to 12% of…

  3. X — SemiAnalysis TIER_1 English(EN) · SemiAnalysis_ ·

    Nvidia has despecced Rubin Ultra's HBM: from HBM4E 12-Hi (384GB) down to HBM4 8-Hi (192GB).

    Nvidia has despecced Rubin Ultra's HBM: from HBM4E 12-Hi (384GB) down to HBM4 8-Hi (192GB). Why strip memory out of your flagship rack-scale system? Because after the latest HBM and DRAM price hikes, memory had quietly become ~40% of total capital cost of ownership. We ran the …

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